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Wyszukujesz frazę "docking" wg kryterium: Temat


Tytuł:
Coarse-grained modeling of protein structure, dynamics and protein-protein interactions
Autorzy:
Koliński, A.
Kmiecik, S.
Jamróz, M.
Błaszczyk, M.
Kouza, M.
Kurciński, M.
Powiązania:
https://bibliotekanauki.pl/articles/1954428.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska
Tematy:
coarse-grained modeling
protein folding
protein dynamics
molecular docking
protein docking
Opis:
Theoretical prediction of protein structures and dynamics is essential for understanding the molecular basis of drug action, metabolic and signaling pathways in living cells, designing new technologies in the life science and material sciences . We developed and validated a novel multiscale methodology for the study of protein folding processes including flexible docking of proteins and peptides. The new modeling technique starts from coarse-grained large-scale simulations, followed by selection of the most plausible final structures and intermediates and, finally, by an all-atom rectification of the obtained structures. Except for the most basic bioinformatics tools, the entire computational methodology is based on the models and algorithms developed in our lab. The coarse-grained simulations are based on a high-resolution lattice representation of protein structures, a knowledge based statistical force field and efficient Monte Carlo dynamics schemes, including Replica Exchange algorithms. This paper focuses on the description of the coarse-grained CABS model and its selected applications.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2014, 18, 3; 219--229
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forecasting the demand for transport services on the example of a selected logistic operator
Autorzy:
Grzelak, Małgorzata
Borucka, Anna
Buczyński, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/223984.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multiple regression
forecasting
cross-docking
Opis:
The number of shipments is growing every year, and as a result, new transport companies arise. The increase in competition requires from entrepreneurs to apply solutions increasing the level of services provided in order to best satisfy the needs of the customers. In this aspect, minimizing the time of deliveries is extremely important, and it can be achieved, for example, by implementing the cross-docking method. It consists in consolidation of cargo from different shipment locations that is delivered in the same direction. The main feature of the above method is to keep the labor intensity of operations and the interference in the cargo to the minimum. The purpose of this article is to present a research on a logistic operator working based on a cross-docking warehouse with a capacity significantly lower than the average daily quantity of shipments handled. This requires both effective management of the available space and minimizing the time spent on manipulation activities. Therefore, it is important to know the expected number of parcels that are planned to be received and shipped on a given day in order to coordinate the work in the warehouse. It is possible to estimate it by using mathematical methods of forecasting. One of them - the multiple regression - is presented in this article. The calculations were made on the basis of collected empirical observations concerning orders for pallet spaces placed by customers. Such a forecast allows for improvement of the processes of planning and management of the possessed resources. It allows to adjust the number of warehouse workers or vehicles necessary for internal transport to the expected needs. Ultimately, it may translate into more efficient functioning not only of the surveyed branch, but also of the whole network.
Źródło:
Archives of Transport; 2019, 52, 4; 81-93
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Navigation for Satellite Formation Flying
Autorzy:
Głębocki, R.
Jacewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/403438.pdf
Data publikacji:
2018
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
satellite
vision navigation
autonomous docking
Opis:
This paper deals with the case of a target satellite in an unknown orientation and location with respect to the master satellite. Feature based monocular pose estimation vision system was presented. The results of analysis, implementation and testing of simulation intended for vision-based navigation applications such as rendezvous of satellites and formation flying are shown. The mobile robot was used as the platform for the vision system. Pose estimation algorithms were implemented in Matlab environment. It was obtained that the proposed method is robust on varying and low light conditions.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2018, 9, 2 (32); 9-26
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tautomers of styrylquinoline derivatives containing a methoxy substituent: Computation of their population in aqueous solution and their interaction with RSV integrase catalytic core.
Autorzy:
Ouali, Mohammed
Laboulais, Cyril
Leh, Hervé
Gill, David
Xhuvani, Emil
Zouhiri, Fatima
Desmaële, Didier
d'Angelo, Jean
Auclair, Christian
Mouscadet, Jean-François
Le Bret, Marc
Powiązania:
https://bibliotekanauki.pl/articles/1044385.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
docking
solvent effects
styrylquinoline
integrase inhibitors
Opis:
8-Hydroxy-2-[2-(3-hydroxy-4-methoxyphenyl)ethenyl]-7-quinoline carboxylic acid and 8-hydroxy-2-[2-(3-methoxy-4-hydroxyphenyl)ethenyl]-7-quinoline carboxylic acid inhibit the processing and strand transfer reactions catalyzed by HIV-1 integrase with an IC50 of 2 μM. Some of their spectral properties are briefly reported. Their fluorescence is so weak that it is of no use in an experimental determination of the binding to the protein and we resorted to computer simulation. Both styrylquinoline derivatives, in their monoanionic form, have several dozens of tautomers and each of these forms has four planar rotamers. In this work computer simulations have been performed to determine which tautomer is the most abundant in aqueous solution and which binds to the Rous sarcoma virus (RSV) integrase catalytic core. As the substituents on the quinoline moiety are the same as on salicylic acid, the energies of hydroxy benzoic acid tautomers were also computed both in vacuo and embedded in a continuous medium which had the dielectric constant of bulk water, using the recent CPCM technique. The CPCM method was then applied to the two integrase inhibitors to estimate the tautomer population in water. The binding site of the compounds on the RSV integrase catalytic core was determined through a docking protocol, consisting of coupling a grid search method with full energy minimization. The designed method is a way leading to identification of potent integrase inhibitors using in silico experiments.
Źródło:
Acta Biochimica Polonica; 2000, 47, 1; 11-22
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Synthesis, spectral, characterization of 4,5-diphenyl-1-((tetrahydrofuran-2-yl)methyl)-2-(3,4,5-trichlorophenyl)-1H-imidazole and its applications of molecular docking, anticancer activity
Autorzy:
Dhineshkumar, E.
doss, M. Arockia
Uma, D.
Powiązania:
https://bibliotekanauki.pl/articles/1031882.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
HepG2
Imidazole
cytotoxicity
molecular docking
Opis:
In the present study of 4,5-diphenyl-1-((tetrahydrofuran-2-yl)methyl)-2-(3,4,5-trichlorophenyl)-1H-imidazole 1 was synthesized. The synthesized imidazole compound 1 has been characterized by FT-IR, 1H, 13C NMR and ESI-Mass spectral studies. Molecular docking is also performed in order to explain the over-expression of estrogen receptor in 70% of liver cancer. The imidazole scaffold is a privileged scaffold for exploration of anticancer agents. The objective of the present study is to evaluate the anticancer activity of imidazole 1 in human liver cancer cell lines HepG2.
Źródło:
World News of Natural Sciences; 2020, 30, 2; 203-212
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluating the measurement accuracy of laser distance meters for the purpose of the PNDS system construction
Autorzy:
Muczyński, B.
Terczyński, R.
Gucma, L.
Powiązania:
https://bibliotekanauki.pl/articles/360626.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
docking
laser distance meters
statistical analysis
Opis:
Preliminary outcome of the tests of laser distance measurement modules being a part of the PNDS system (Pilot Navigation & Docking System) developed within the OPIE project (Operational Programme Innovative Economy) in Maritime University in Szczecin are presented in the article. The tests were carried out in laboratory conditions and the actual conditions which may occur during the system’s operation. The modules of the digital laser distance meters available on civilian market were compared. Statistical analysis comparing the accuracy of the laser distance meters was presented and based on it, their general effectiveness was evaluated making part of the preliminary prototype of the PNDS system.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 2; 131-136
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational study of binding of epothilone A to β-tubulin
Autorzy:
Kamel, Karol
Kolinski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1039930.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
epothilones
β-tubulin
flexible docking
drug design
Opis:
Understanding the interactions of epothilones with β-tubulin is crucial for computer aided rational design of macrocyclic drugs based on epothilones and epothilone derivatives. Despite numerous structure-activity relationship investigations we still lack substantial knowledge about the binding mode of epothilones and their derivatives to β-tubulin. In this work, we reevaluated the electron crystallography structure of epothilone A/β-tubulin complex (PDB entry 1TVK) and proposed an alternative binding mode of epothilone A to β-tubulin that explains more experimental facts.
Źródło:
Acta Biochimica Polonica; 2011, 58, 2; 255-260
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interception of a free-rotating satellite: an autonomous rendezvous scenario
Autorzy:
Seweryn, K.
Banaszkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/307630.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
satellite rendezvous
autonomous control systems
docking maneuvers
Opis:
The spacecraft's lifetime is often limited by reliability and redundancy of its components. Furthermore, serious restrictions on duration of spacecraft operations are posed by finite amount of fuel or cooling agent. It is also clear that once a satellite is launched, it is extremely difficult to replace/modify its hardware on the orbit. Future spacecraft missions, especially huge planetary orbiters, will require servicing support from autonomous unmanned satellites. In this paper we introduce and analyze a new scenario for interception of a free rotating satellite ion a Keplerian orbit. The scenario is divided into several stages to be executed by the servicing satellite: attitude determination of the target object; own motion planning; determination of the optimal target position and orientation before docking; controlled approach, i.e., decreasing of a range between satellites; orbiting of the servicing satellite around the target satellite; docking, i.e., radial degreasing of the intersatellite range till the satellites contact, while keeping constant the relative orienta- tion between them. The control algorithm for the servicing satellite motion during its maneuvers is described. Finally, a few examples of satellite motion simulations according to the proposed scenario are presented.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 1; 59-62
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technologia UWB w procesie dystrybucji
UWB technology in the distribution process
Autorzy:
Rzempołuch, M.
Powiązania:
https://bibliotekanauki.pl/articles/2058321.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
dystrybucja
cross docking
Ultra Wide Band
distribution
Opis:
Celem artykułu jest przedstawienie i objaśnienie technologii UWB oraz możliwości jej zastosowania, a w szczególności dla procesu dystrybucji. Przedstawiono model w jakim mogłaby funkcjonować ta technologia w cross dockingu.
The aim of the article is to present and explain the UWB technology and its applicability, in particular for the distribution process. A cross docking model with this technology
Źródło:
Journal of TransLogistics; 2018, 4, 1; 149--156
2450-5870
Pojawia się w:
Journal of TransLogistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis, characterization and docking studies of some novel xanthene derivatives
Autorzy:
Bhatt, Aditya H.
Shah, Viral R.
Rawal, Rakesh M.
Powiązania:
https://bibliotekanauki.pl/articles/1075739.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Antimicrobial activity
Docking studies
Hantzsch synthesis
Xanthene
Opis:
The synthesis of a novel xanthene derivatives bearing dimedone as an excellent precursor has been achieved by applying one pot three component Hantzsch type condensation. The newly synthesized compounds were characterized by spectral and elemental analyses. All synthesized compounds undergo docking studies and biological screening for antimicrobial activity against Gram-positive bacteria, Gram-negative bacteria and fungal species. Among all the tested compounds, it was found that compound 3c, 3d, 3g and 3h revealed better activities against the Gram-positive rather than the Gram-negative bacteria whereas results of docking studies revealed that compounds 3b, 3g and 3i showed best binding affinity towards ATP binding pocket of Human PIM1 kinase receptor through steric favorable and H-bond interactions.
Źródło:
World Scientific News; 2019, 118; 100-114
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimizing the number of docks at transhipment terminals using genetic algorithm
Autorzy:
Izdebski, M.
Jacyna-Gołda, I.
Powiązania:
https://bibliotekanauki.pl/articles/242009.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transhipment terminal
genetic algorithm
optimization
cross docking
Opis:
This article presents the issue of designating the number of docks at the transhipment terminals using genetic algorithm. Transhipment terminals refer to cross-docking terminals. The main factor that influences on the number of these docks is the stream of cargo flowing into the given terminal. In order to determine this flow of cargo the mathematical model of the distribution of this flow was developed. This model takes into account constraints like those that e.g. processing capacity at the transhipment terminal cannot be exceeded or demand of recipients must be met. The criterion function in this model determines the minimum cost of the flow of cargo between all objects in the transport network. To designate the optimal stream of cargo flowing into the transport network the genetic algorithm was developed. In this article, the stages of construction of this algorithm were presented. The structure processed by the algorithm, the process of crossover and mutation were described. In the article in order to solve the problem of designating the number of docks at the transhipment terminals the genetic algorithm was developed.
Źródło:
Journal of KONES; 2017, 24, 4; 369-376
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza działania Morskiej Stacji Referencyjnej w Świnoujściu jako podstawa do stworzenia morskich systemów IDS (Instrument Docking System)
Analysis of Operation of the Maritime Reference Station in Świnoujście as a Basis for Creating the Instrument Docking System (IDS)
Autorzy:
Pietraszkiewicz, J.
Tycholiz, W.
Powiązania:
https://bibliotekanauki.pl/articles/342427.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni
Tematy:
e-Navigation
nawigacja precyzyjna
cumowanie
Instrument Docking System (IDS)
Portable Pilot Units (PPU)
Real Time Kinematic (RTK)
systemy pilotowe
International Docking System Standard (IDSS)
precise navigation
docking
pilots systems
Opis:
W artykule opisano fazy podchodzenia statku do portu ze szczególnym uwzględnieniem problemu wyznaczania pozycji jednostki z dużą dokładnością w czasie rzeczywistym. W tym aspekcie przeprowadzona została analiza systemów pozycjonowania, ich dokładności, dostępności, niezawodności oraz zasięgu działania. W artykule przedstawiono wyniki badań obserwacji dokładności systemu pozycjonowania w Świnoujściu, przeprowadzonych przez zespół NavSim Polska Sp. z o.o. Podkreślając wykorzystanie techniki RTK (Real Time Kinematic), przeprowadzono analizę działania Morskiej Stacji Referencyjnej (MSR) w Świnoujściu. Artykuł prezentuje możliwe praktyczne wykorzystanie technologii GNSS RTK (Global Navigation Satellite Systems) do budowy systemów elektronicznego zobrazowania rzeczywistej sytuacji nawigacyjnej dużej jednostki oraz wdrożenia na wzór systemów lotniczych ILS (Instrument Landing System) lub GBAS (Ground Based Augmentation System) morskich systemów IDS (Instrument Docking System). Przedstawione wnioski uzasadniają przydatność MSR w Świnoujściu oraz stosowanie podobnych systemów w celu zwiększenia bezpieczeństwa podczas wprowadzania statków do portu.
Navigating large vessels in the confined waters (coastal/approach and harbour) is everything but trivial. Due to heavy vessel traffic, vicinity of navigational hazards, limited water depth, rapidly changing navigational circumstances, and tremendous weight of the vessels, navigating, mooring and docking activities are demanding and stressful for the pilots. Stress usually leads to increased tiredness, risk of human error and thus to a larger number of incidents and accidents. Marine pilots are more tired and less effective. In the temperate zones there is an additional factor to be considered: poor visibility. This article presents a practical application of the GNSS RTK technology in the electronic chart and situational awareness system as well as the concept of the Instrument Docking System (IDS) for vessels, which in its purpose and fundamental elements is similar to the Instrument Landing System (ILS) for aircrafts).
Źródło:
Zeszyty Naukowe Akademii Morskiej w Gdyni; 2018, 107; 84-98
1644-1818
2451-2486
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Gdyni
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Present status and tendencies in docking systems’ development
Autorzy:
Felski, A.
Naus, K.
Świerczyński, S.
Wąż, M.
Zwolan, P.
Powiązania:
https://bibliotekanauki.pl/articles/320743.pdf
Data publikacji:
2014
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
harbour navigation
harbor pilot
docking system
efficient navigation
Opis:
The process of the ships docking, especially very large ships, is an very risky operation in confined and busy port waters. The similar difficult is the task to pass along any channel, river, strait or similar water road. The basic difficulty causes maneuvering with the great mass of the ship in situation of small space to maneuvers, the large inertia of the object and poor maneuvering properties at small speeds occurring in such circumstances. An additional factor, which make this task more difficult is the influence of the wind and the sea current on the hull of the inert ship as well as consequences of the limited visibility. The bad weather can cause the necessity to delay the maneuver. However this joins with heavy costs. An alternative is usage of systems supporting this process. In this paper nowadays accessible systems for augmentation the docking and harbor navigation are analysed. There are: shore based (active or passive) and ship based (active). This paper is prepared in the frame of Bonus project call 2012 ‘The Captain Assistant system for Navigation and Routing during Operations in Harbor’.
Proces wprowadzania statków do portów, zwłaszcza statków bardzo dużych, to ryzykowna operacja, szczególnie na wodach ograniczonych i zatłoczonych. Podobnie trudne jest zadanie przeprowadzenia statku przez jakikolwiek kanał, rzekę, cieśninę lub podobną drogę wodną. Podstawowa trudność wynika z wielkiej masy statku w sytuacji małej przestrzeni, wielkiej bezwładności obiektu i złych własności manewrowych przy małych szybkościach, typowych dla takich okoliczności. Dodatkowym czynnikiem utrudniającym to zadanie jest wpływ wiatru i prądu morskiego na kadłub bezwładnego statku, jak również konsekwencje ograniczonej widoczności. Zła pogoda może spowodować potrzebę odłożenia manewru na później, jednak łączy się to z dużymi kosztami. Alternatywą może być zastosowanie systemów wspierających ten proces. W artykule przedstawiono analizę dostępnych obecnie systemów dedykowanych dla wspierania takich operacji w portach oraz żeglugi w akwenach ograniczonych. Systemy te występują w wariantach brzegowych (aktywne lub pasywne) oraz okrętowych (aktywne). Artykuł został przygotowany w ramach projektu BONUS 2012 „System wspomagania kapitana w procesie nawigacji w trakcie operacji portowych”.
Źródło:
Annual of Navigation; 2014, 21; 35-48
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NEW BETULIN NITRATES: SYNTHESIS, CYTOTOXIC ACTIVITY AND MOLECULAR DOCKING EVALUATION
Autorzy:
Feng, GaiLi
Wang, Tao
Zhang, Rong
Luo, Jin
Xiao, MinJie
He, BaoEn
Liu, YongQian
Wu, JunXiao
Powiązania:
https://bibliotekanauki.pl/articles/895411.pdf
Data publikacji:
2018-10-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
Molecular docking
anti-tumor
Betulin nitrates
NO donors
Opis:
Betulin and its derivatives have been reported to affect several key genes of cell-cycle regulators. However, their specific targets haven’t yet been discovered. As an important cell cycle regulator, Cyclin-dependent kinase-2 (CDK2) has become a potential target for cancer therapy. Here we describe the design, synthesis and antitumor activities in vitro of eleven new betulin nitrates. The results revealed that compound (20) possesses potent antitumor activity against MCF-7 cell lines (IC50 < 10 μM). In order to investigate potential protein target, betulin nitrates were subjected to docking studies with CDK2. Compound (20) showed very good binding affinity for CDK2 via hydrogen bonding interactions. Thus, the CDK2 inhibitory potential could make compound (20) possible candidate as antitumor agent.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 5; 1135-1145
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and spectroscopic interpretations of Co(II), Ni(II) and Cu(II) decxycholate complexes with molecular docking of COVId-19 protease
Autorzy:
Refat, Moamen S.
Bakare, Safyah B.
Altalhi, Tariq A.
Alam, Kehkashan
Al-Hazmi, Ghaferah H.
Powiązania:
https://bibliotekanauki.pl/articles/1849269.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
deoxycholic acid
complexes
ESR
TGA/DSC
molecular docking
Opis:
Co(II), Ni(II) and Cu(II) decxycholate complexes are interesting due to their biologically active and deliberate interest in the research due to their coordination properties. The microanalytical ‘elemental analysis’, molar conductivity, (infrared and Raman) spectroscopy, thermal analyses (TGA/DSC), UV-vis spectra, and ESR for copper(II) decxycholate complex investigations were performed in the structural assignments of Co(II), Ni(II) and Cu(II) decxycholate complexes. Reaction of the sodium deoxycholate ligand (C24H39O4Na) with three transition metal ions form the complexes of formulae, [M(C24H39O4)2(H2O)2] . xH2O where M = Co(II), Ni(II) and Cu(II) where x = 2 for Cu(II) and x = 4 in case of M = Co(II) or Ni(II) metal ions. The FTIR spectra of the complexes show that decxycholate molecule is present as bidentate ligand. Molecular docking utilizing to additionally examine the interaction of COVID-19 (6LU7) with different complexes of deoxycholic acid with Co(II), Ni(II) and Cu(II). Furthermore, in the case of Co(II) deoxycholate complex, the probe is surrounded by amino residues Met235, Pro241, Glu240, Pro108, Gln110, Phe294, and Ile152. The probe molecule of Ni(II) deoxycholate complex is sited close to amino acids Tyr126, Tyr239, Leu287, Leu272, and Lys137. For, Cu(II) deoxycholate complex, the residues of amino acids comprise of Pro132, Pro108, Gln110, Gly109, Ile200, Asn203, Val202, His246, Pro293 and Tyr154. The binding energy was determined from the docking reads for Co(II)–6LU7, Ni(II)–6LU7 and Cu(II)–6LU7 deoxycholate compounds were found to be −446.99, −500.52, −398.13 kcal mol−1 individually.
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 2; 54-59
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and spectroscopic interpretations of Co(II), Ni(II) and Cu(II) decxycholate complexes with molecular docking of COVId-19 protease
Autorzy:
Refat, Moamen S.
Bakare, Safyah B.
Altalhi, Tariq A.
Alam, Kehkashan
Al-Hazmi, Ghaferah H.
Powiązania:
https://bibliotekanauki.pl/articles/1849271.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
deoxycholic acid
complexes
ESR
TGA/DSC
molecular docking
Opis:
Co(II), Ni(II) and Cu(II) decxycholate complexes are interesting due to their biologically active and deliberate interest in the research due to their coordination properties. The microanalytical ‘elemental analysis’, molar conductivity, (infrared and Raman) spectroscopy, thermal analyses (TGA/DSC), UV-vis spectra, and ESR for copper(II) decxycholate complex investigations were performed in the structural assignments of Co(II), Ni(II) and Cu(II) decxycholate complexes. Reaction of the sodium deoxycholate ligand (C24H39O4Na) with three transition metal ions form the complexes of formulae, [M(C24H39O4)2(H2O)2] . xH2O where M = Co(II), Ni(II) and Cu(II) where x = 2 for Cu(II) and x = 4 in case of M = Co(II) or Ni(II) metal ions. The FTIR spectra of the complexes show that decxycholate molecule is present as bidentate ligand. Molecular docking utilizing to additionally examine the interaction of COVID-19 (6LU7) with different complexes of deoxycholic acid with Co(II), Ni(II) and Cu(II). Furthermore, in the case of Co(II) deoxycholate complex, the probe is surrounded by amino residues Met235, Pro241, Glu240, Pro108, Gln110, Phe294, and Ile152. The probe molecule of Ni(II) deoxycholate complex is sited close to amino acids Tyr126, Tyr239, Leu287, Leu272, and Lys137. For, Cu(II) deoxycholate complex, the residues of amino acids comprise of Pro132, Pro108, Gln110, Gly109, Ile200, Asn203, Val202, His246, Pro293 and Tyr154. The binding energy was determined from the docking reads for Co(II)–6LU7, Ni(II)–6LU7 and Cu(II)–6LU7 deoxycholate compounds were found to be −446.99, −500.52, −398.13 kcal mol−1 individually.
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 2; 54-59
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular docking and binding interaction between psychedelic drugs and human serum albumin
Autorzy:
Khastar, H.
Foroughi, K.
Aghayan, S.S.
Yarmohammadi, M.
Jafarisani, M.
Powiązania:
https://bibliotekanauki.pl/articles/2097000.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
human serum albumin
biodistribution
psychedelic drugs
molecular docking
Opis:
Drug-plasma protein interaction is a critical concern in monitoring drug circulation and drug-drug interactions. The present study aimed to investigate the interaction of psychedelic drugs such as lysergic acid diethylamide (LSD), dimethyltryptamine (DMT), 2,5-dimethoxy-4-iodoamphetamine (DOI), psilocybin, psilocin, and mescaline with human serum albumin (HSA). The 3D structures of LSD, DMT, DOI, psilocybin, psilocin, mescaline, and albumin were obtained from the structural databases (www.rcsb.org, https://pubchem.ncbi.nlm.nih.gov/compound). The structures were then prepared for molecular docking analysis by Autodock Vina software. Ultimately, the binding energies between docked HSA and psychedelic drugs were calculated, and their interactions were predicted. It was found that the psychedelic drugs can interact with HSA in the active site and the best minimum binding energies of -7.6 kcal/mol and -6.5 kcal/mol were shown by LSD and psilocybin, respectively. Our results indicated that all psychedelic drugs tested could interact with HSA at subdomains IA and IB. The structural properties of the drugs affect their interaction sites and binding energies. It was concluded that albumin, as the most abundant protein of the serum, could act as the biodistributor of psychedelic drugs.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 2; 109-116
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Aminoketooxime Ligand and Its Cu(II) and Mn(II) Complexes: Synthesis, Characterization and Molecular Docking Studies
Autorzy:
Gorgulu, G.
Cicek, M.
Dede, B.
Powiązania:
https://bibliotekanauki.pl/articles/1029789.pdf
Data publikacji:
2018-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
oxime
dinuclear complex
antiferromagnetic
docking
VEGFR-2
COX-2
Opis:
A novel ligand, N,N"-(4-methyl-1,2-phenylene)bis(2-(biphenyl-4-yl)-N'-hydroxy-2-oxoacetimidamide) (H₂L) with its Cu(II) and Mn(II) complexes were synthesized in this study. All compounds synthesized were also characterized by ¹H- and ¹³C-NMR, the Fourier transform infrared, elemental analysis, inductively coupled plasma optical emission spectrometry, molar conductivity, magnetic susceptibility measurements and thermogravimetric analysis. Vascular endothelial growth factor-2 (VEGFR-2) and cyclooxygenase-2 (COX-2) inhibition is often used as a parameter for being a potent anticancer agent in docking studies. For this purpose, synthesized and characterized ligand was investigated by molecular docking study to test its inhibitory effect against angiogenic factors VEGFR-2 and COX-2.
Źródło:
Acta Physica Polonica A; 2018, 133, 2; 250-255
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of anti-cyanobacterial leads targeting carbonic anhydrase from phytochemical database using in silico approach
Autorzy:
Padhiary, Archana
Mir, Showkat A.
Tete, Sheary S.
Baitharu, Iswar
Nayak, Binata
Powiązania:
https://bibliotekanauki.pl/articles/16704466.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
phytochemical database
lead optimizations
ADMET analysis
molecular docking simulations
Opis:
In cyanobacteria, carbonic anhydrase (zinc metalloenzyme) is a major enzyme that converts CO2 to HCO3 maintaining the carbon concentration around the vicinity of RuBisCo, leading to cyanobacterial biomass generation. Anthropogenic activities, disposal of leached micro nutrients effluents from industries into the aquatic environment results in cyanobacterial blooms. The harmful cyanobacteria release cyanotoxins in open-water system which on ingression through oral route causes major health issues like hepatotoxicity and immunotoxicity. A database was prepared consisting of approximately 3k phytochemicals curated from previous literatures, earlier identified by GC-MS analysis. The phytochemicals were subjected to online servers to identify the novel lead molecules which followed ADMET and drug-like candidates. The identified leads were optimized by density functional theory method using B3YLP/G* level of theory. Carbonic anhydrase chosen as target to observe the binding interaction through molecular docking simulations. From the molecules included in the database the highest binding energy exhibited by alpha-tocopherol succinate and mycophenolic acid were found to be -9.23 kcal/mol and -14.41 kcal/mol and displayed interactions with GLY A102, GLN B30, ASP A41, LYS A105 including Zn2+ and their adjacent amino acids CYS 101, HIS 98, CYS 39 in both chain A and chain A-B of carbonic anhydrase. The identified molecular orbitals decipher computed global electrophilicity values (Energy gap, electrophilicity and Softness) of alpha tocopherol succinate and mycophenolic acid were found to be (5.262, 1.948, 0.380) eV and (4.710, 2.805, 0.424) eV demonstrates both molecules are effective and stable. The identified leads may serve as a better anti-carbonic anhydrase agent because they accommodate in the binding site and hampers the catalytic activity of Carbonic anhydrase thus inhibiting the generation of cyanobacterial biomass. This identified lead molecules may serve as a substructure to design novel phytochemicals against carbonic anhydrase present in cyanobacteria. Further in vitro study is necessary to evaluate the efficacy of these molecules.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 2; 121-136
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antibacterial, DNA photocleavage and molecular docking studies of newly prepared Schiff-based macrocyclic complexes
Autorzy:
Mishra, Purti
Sethi, Pooja
Kumar Ramasamy, Selva
Saini, Adesh K.
Singh Tuli, Hardeep
Mittal, Divya
Trehan, Aarti
Powiązania:
https://bibliotekanauki.pl/articles/40422849.pdf
Data publikacji:
2024-03-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
anti-bacterial
DFT
DNA photocleavage
molecular docking
template method
Opis:
Introduction and aim. At present, several microbial diseases are prominent and of concern worldwide. The intent of this study was to examine the antibacterial potential of newly synthesized tetradentate macrocyclic complexes against different bacterial strains. The macrocyclic scaffold has gained attention as a biologically active class of supramolecular chemistry due to its unique properties and ability to target various microorganisms. Thus, the goal of the present study was to develop a series of biologically active transition metal-based macrocycles. Material and methods. All macrocyclic compounds were synthesized by a template method and validated by molar conductivity, elemental studies, and spectral and magnetic studies. Antibacterial activities of all metal complexes were evaluated against Escherichia coli (MTCC 739) and Staphylococcus aureus (MTCC 731) bacterial strains by taking ampicillin as a standard reference drug. DNA photocleavage potential was explored using agarose gel electrophoresis. Results. Results revealed the formation of novel macrocyclic complexes via tetra nitrogen bond trapping of metals. Copper complexes have strong potential against S. aureus bacteria as copper and nickel both show good DNA photocleavage potential. Conclusion. The findings endorse the biomedical relevance of these macrocyclic scaffolds, suggesting avenues for further exploration in targeted drug delivery and potential clinical applications. The proposed octahedral geometry for the complexes enhances our understanding of their structural aspects. This research contributes substantively to the field, laying the foundation for future investigations in advanced antimicrobial design and application.
Źródło:
European Journal of Clinical and Experimental Medicine; 2024, 22, 1; 154-163
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie systemu organizacji przewozów w firmie transportowej
Modelling of organizational system of deliveries within transportation company
Autorzy:
Brzeziński, M.
Waśniewski, T.
Kijek, M.
Powiązania:
https://bibliotekanauki.pl/articles/1381693.pdf
Data publikacji:
2015
Wydawca:
Polskie Wydawnictwo Ekonomiczne
Tematy:
transport
przeładunek kompletacyjny
metoda euklidesowa
cross docking
Euclidean method
Opis:
Globalny transport samochodowy wykorzystywany w wielu gałęziach gospodarki zapewnia dostawy do klientów. Fragmentaryzacja działań firm transportowych komplikuje wykonywanie zadań i nie pozwala na optymalizację dostaw. Powoduje to wydłużenie czasu realizacji, podnosi koszty i nie jest elastyczne na potrzeby klienta. Konsekwencją tego jest malejące zadowolenie klienta z logistycznej obsługi, co w efekcie prowadzi do ich utraty, a co za tym idzie spadku zysków. Przedsiębiorstwa transportowe powinny ukierunkować się na zamiany w podejściu procesowym, bowiem transport odgrywa znaczącą rolę w procesach logistycznych. W rezultacie jego optymalizacja zmierza do usprawnienia procesów bezpośrednio wpływających na wzrost wartości przedsiębiorstwa.
Global trucking used in various branch of industry enables deliveries to respective customers. Fragmentation of activities of transport companies makes complex providing some tasks and not allows for optimization of deliveries. It causes delays of realization of deliveries, rises costs and is not flexible towards customer needs. As a consequence, customer satisfaction from logistic service is going down and it leads to losing of customers and decreasing of profit. Transportation companies should aim in changing into processes approach, respecting the significant role of transportation in logistic processes. In result optimization of transportation process aims in rationalization of global processes affecting the growth of the company.
Źródło:
Gospodarka Materiałowa i Logistyka; 2015, 4; 27-36
1231-2037
Pojawia się w:
Gospodarka Materiałowa i Logistyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular docking and prediction of ADME/drug-likeness properties of potentially active antidiabetic compounds isolated from aqueous-methanol extracts of Gymnema sylvestre and Combretum micranthum
Autorzy:
Ononamadu, C.J.
Ibrahim, A.
Powiązania:
https://bibliotekanauki.pl/articles/2096363.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Gymnema sylvestre
Combretum micranthum
antidiabetic compounds
molecular docking
pharmacokinetics
drugs
Opis:
Gymnema sylvestre and Combretum micranthum are well known for their ethno-medicinal uses in the northwest of Nigeria. In our recent study, we demonstrated the antidiabetic and antioxidant activities of the aqueous-methanol extracts of the two plants and identified some potentially active compounds. The present study aimed to conduct molecular docking and ADME/drug-likeness screening of the identified potentially active candidate compounds from aqueous-methanol extracts of G. sylvestre and C. micranthum leaves by using in silico techniques. Molecular docking of compounds on target proteins (α-amylase, α-glucosidase, and phosphorylated insulin receptor tyrosine kinase) was performed using Molsoft ICM-pro 3.8-3. The physicochemical, ADME, and drug-likeness parameters were computed using the SwissADME online program. The result corroborated the antidiabetic activities of the plants with significant binding interactions between compounds A (2,2-dimethyl-3-[4-(acetyloxy)phenyl]-4-ethyl2H-1-benzopyran-7-ol acetate), D (9,13-di-cis-retinoic acid), E (4-hydroxycinnamic acid), F ((-)-11-hydroxy-9,10-dihydrojasmonic acid), G (colnelenic acid), H (glyinflanin A), I (6,8a-seco-6,8a-deoxy-5-oxoavermectin “2a” aglycone), and J (3-deshydroxysappanol trimethyl ether) and at least one of the three target proteins. Four compounds, namely A (2,2-dimethyl-3-[4-(acetyloxy)phenyl]-4-ethyl-2H-1-benzopyran-7-ol acetate), E (4-hydroxycinnamic acid), H (glyinflanin A), and J (3-deshydroxysappanol trimethyl ether), yielded the best docking scores with respect to the target proteins, of which three (E (4-hydroxycinnamic acid), H (glyinflanin A), and J (3-deshydroxysappanol trimethyl ether)) were identified to have relatively optimal drug-likeness and medicinal chemistry characteristics. Thus, the present study concluded that these compounds may have contributed to the observed antidiabetic properties of these plants and can be investigated further as drugs or drug-like compound candidates.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 1; 85-99
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular docking-based test for affinities of two ligands toward vasopressin and oxytocin receptors.
Autorzy:
Ślusarz, Rafał
Kaźmierkiewicz, Rajmund
Giełdoń, Artur
Lammek, Bernard
Ciarkowski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/1044173.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
simulated annealing
bioligand docking
GPCR receptor/bioligand interaction
molecular dynamics
Opis:
Molecular docking simulations are now fast developing area of research. In this work we describe an effective procedure of preparation of the receptor-ligand complexes. The amino-acid residues involved in ligand binding were identified and described.
Źródło:
Acta Biochimica Polonica; 2001, 48, 1; 131-135
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exploring the Interactions Between Caffeic Acid and Human Serum Albumin Using Spectroscopic and Molecular Docking Techniques
Autorzy:
Jahanban-Esfahlan, Ali
Roufegarinejad, Leila
Tabibiazar, Mahnaz
Lorenzo, José M.
Amarowicz, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/1363286.pdf
Data publikacji:
2021
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
human serum albumin (HSA)
fluorescence
caffeic acid
interaction
molecular docking
Opis:
Ultraviolet-visible (UV–Vis) and fluorescence spectroscopy along with molecular docking were used to explore the interaction between human serum albumin (HSA) and caffeic acid (CA). CA is one of the major representatives of hydroxycinnamic acids in plants and is commonly present in plant-based foods. The mechanism by which CA quenched HSA fluorescence was determined to be static, and the values obtained for thermodynamic parameters indicated that the CA and HSA interaction was spontaneous. Hydrogen bonds and van der Waals forces were the main driving forces stabilizing the complex. The binding constant was in the order of 104/M and the number of binding sites for CA on HSA was calculated to be close to one. The results of fluorescence and UV–Vis spectroscopy showed that CA induced conformational changes in HSA structure. The distance of CA and the tryptophan residue of HSA, was determined to be ~2 nm by using Forster resonance energy transfer theory. The mode of binding and the binding site of CA on albumin were examined by performing molecular docking calculations. CA interacted with albumin in subdomain IA, and non–covalent interactions stabilized the complex. CA showed a high affinity for albumin, and thus this phenolic compound would be distributed in the body upon interacting with HSA.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2021, 71, 1; 69-77
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wireless data transmission segment for Pilot Navigation and Docking System, dedicated to use with commercial mobile devices
Autorzy:
Gralak, R.
Powiązania:
https://bibliotekanauki.pl/articles/359048.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
docking system
wireless communication
mobile device
aid to navigation
INS/IBS
Opis:
The main task carried out by the Pilot Navigation and Docking System is to provide the navigation information for the pilot or captain, during the vessel berthing. The form of presentation of such information may be implemented using various methods. The form of lighting arrays located on the quay is the least technical complicated method to present the navigational parameters of manoeuvring vessel. Much more advanced way of communication is the delivery of the necessary data on the manoeuvring vessel’s bridge, using the selected wireless data transmission technology. The visualization is done via dedicated device’s screen or commercial laptop, tablet, smartphone or mobile phone. The remainder of this article describes the construction, specifications and algorithm of wireless data segment intended for the commonly used mobile devices.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 2; 29-33
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vision based navigation for satellite docking
Autorzy:
Jacewicz, M.
Głębocki, R.
Powiązania:
https://bibliotekanauki.pl/articles/245809.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
satellite
vision navigation
autonomous docking
satelita
nawigacja wizyjna
autonomiczne dokowanie
Opis:
This article deals with the situation of a space debris or not working satellite in an unidentified pose with respect to the master satellite. Feature based monocular pose estimation vision system was presented. The results of numerical simulation were described. The results of implementation and testing of simulation intended for vision-based navigation applications such as rendezvous of satellites and formation flying is shown. In this document markerless local features based navigation system has been studied. The proposed vision navigation system satellites are able to determine the position and orientation of a target in relation to the coordinate system of the camera. It relates from the time when the satellite is visible as a small object until docking with the chaser. A modified algorithm soft Position Iterations was used to estimate the pose of the target. Visual navigation system uses a single camera. The impact of changes in illumination of the object was analysed. In order to reproduce the space conditions the laboratory stand was built. The developed method was tested experimentally for different scenarios approach satellites to each other. Comparing the ground truth position and orientation and the results obtained with the aim of vision navigation system it is worth nothing to observe accuracy of the developed method. Achieved satisfactory performance of the algorithm.
Źródło:
Journal of KONES; 2017, 24, 1; 189-202
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Protein-protein docking refinement using restraint molecular dynamics simulations
Autorzy:
Zacharias, M.
Powiązania:
https://bibliotekanauki.pl/articles/1938618.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska
Tematy:
protein-protein complex
docking prediction
force field modeling
implicit solvent modeling
Opis:
A realistic prediction of the structure of protein-protein complexes is of major importance to obtain three-dimensional models for the interaction of proteins to form complexes and assemblies. In addition to the systematic search for putative binding sites on the surface of two binding partners, the second step of a docking effort, the refinement of docked complexes, is a major bottleneck to obtain realistic interaction geometries. Typically, the first initial systematic search employs rigid partner structures or few flexible degrees of freedom, whereas the refinement step involves fully flexible partner structures. The possibility to refine docked complexes using restraint MD simulations combined with an implicit solvent (Generalized Born) mode l was explored on three example test complexes starting from unbound partner structures. Significant improvement, both in scoring and agreement with the native complex structure after refinement was observed for two test cases. No improvement was found for a test case of a complex with lower binding affinity. The method can be easily applied to any docked protein-protein complex, however, more general applicability requires further improvements in the scoring function.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2016, 20, 4; 353-360
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of dock tanks pumping plan on structural loads of a dock and a ship
Autorzy:
Rajewski, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/27315874.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
vessels
repairs
docking
floating dock
jednostki pływające
naprawy
dokowanie
dok pływający
Opis:
Positioning of a ship on a working platform above the waterline in order to repair and modernize the underwater hull parts requires changes from continuous support to point support. And as a result of such, the load of the ship structure is subject to changes as well. In extreme cases, the loads may exceed the allowable loads and cause damage to the hull structure. The paper presents the technical aspects of the ships docking process which may have an impact on safety. It also includes a discussion on procedures that reduce the risk of malfunction and failure.
Źródło:
New Trends in Production Engineering; 2018, 1, 1; 143-149
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected problems of ship safety in the process of docking
Autorzy:
Kaup, M.
Łozowicka, D.
Blatnický, M.
Powiązania:
https://bibliotekanauki.pl/articles/2064433.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
ship’s docking
safety
accidents
threats
dokowanie statku
bezpieczeństwo
wypadki
zagrożenia
Opis:
This article concerns safety during ship docking operations. It presents its specificity for this type of operation, describes selected problems that may occur during its operation and identifies the main factors initiating extraordinary situations. The article presents 4 examples of accidents during docking operations in recent years. Cause and effect analysis was carried out and presented graphically. This analysis illustrated the occurring errors in the safety system during the docking operation.
Źródło:
New Trends in Production Engineering; 2018, 1, 1; 43-49
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal docking problem of UAV at detected moving object
Autorzy:
Nabadova, Lamiya
Powiązania:
https://bibliotekanauki.pl/articles/27314662.pdf
Data publikacji:
2023
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
drone
algorithm
optimal control
UAV
docking
dron
algorytm
optymalne sterowanie
dokowanie
Opis:
In the article, the problem of detecting a suspicious object in the control by unmanned air vehicle (UAV) and tracking it by reaching and changing its direction in the shortest period of time is explored. To solve this optimal control problem, it is considered that the flight of UAV is described with simple motion equations. In the beginning, known quantities are current coordinates and speed of UAV, equation of motion of detected suspicious object.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2023, 120; 205--214
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potent antifungal properties of gallic acid in Sarcochlamys pulcherrima against Candida auris
Autorzy:
Akhtar, Nahid
Mannan, M. Amin-Ul
Pandey, Deeksha
Sarkar, Amon
Sharma, Himanshi
Kumar, Manish
Ghosh, Anup
Powiązania:
https://bibliotekanauki.pl/articles/16698568.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Sarcochlamys pulcherrima
antifungal
gallic acid
Candia auris
molecular docking
carbonic anhydrase
Opis:
Candida auris is a major public health concern due to its high transmission and mortality rates, as well as the emergence of pan-resistant strains. This study aimed to identify an antifungal compound from Sarcochlamys pulcherrima , an ethnomedicinal plant, that can inhibit the growth of C. auris. Methanol and ethyl acetate extracts of the plant were obtained, and high-performance thin-layer chromatography (HPTLC) analysis was conducted to identify the major compounds in the extracts. The major compound detected by HPTLC was subjected to in vitro antifungal activity testing, and its antifungal mechanism was determined. The plant extracts inhibited the growth of both C. auris and Candida albicans. HPTLC analysis revealed the presence of gallic acid in the leaf extract. Furthermore, the in vitro antifungal assay showed that gallic acid inhibited the growth of different C. auris strains. In silico studies indicated that gallic acid can bind to the active sites of carbonic anhydrase (CA) proteins in both C. auris and C. albicans, affecting their catalytic activities. Compounds that target virulent proteins such as CA can aid in the reduction of drug-resistant fungi and the development of novel antifungal compounds with unique modes of action. However, additional in vivo and clinical studies are required to conclusively determine gallic acid’s antifungal properties. Gallic acid derivatives may be developed in the future to possess more potent antifungal properties and target various pathogenic fungi.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 2; 105-119
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laser range measurement filtration for PNDS purposes
Autorzy:
Zalewski, P.
Tomczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/360547.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
Kalman filtration
state vector estimation
range measurement
laser range
docking system
Opis:
PNDS (Pilot Navigation and Docking System) [1] utilizes the range measurement between laser head and ship’s side to determine the ship’s outline presented on the screen. The noisy measurements and dynamic process noise affect the accuracy of determined parameters and propagate to ship’s heading and position. To improve the performance of PNDS system there was a need to apply the data filtering technique. In the paper the theoretical basis and algorithm of discrete Kalman filter designed for range optimal estimation in PNDS were described. The real data collected during berthing operation of motor vessel Navigator XXI were filtered and compared to row unfiltered data. The conclusions contain evaluation of filter capabilities and its potential application in PNDS system.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 2; 182-185
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DESIGN, SYNTHESIS AND BIOLOGICAL ESTIMATION OF INNOVATIVE PYRAZOLES AS ANTICANCER AGENTS TARGETING CDK2
Autorzy:
Ibrahim, Diaa A.
Radini, Ibrahim A.
KHIDRE, Rizk E.
Powiązania:
https://bibliotekanauki.pl/articles/895649.pdf
Data publikacji:
2019-06-28
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
Pharmacophore
binding energy
pyrazoles
anti-proliferative activity
CDK2 inhibitors
Docking study
Opis:
CDK2, which exhibits an indispensable role as an organizer of cell growth, is the powerfully studied protein Kinases objective of anticancer suppressors. The present study was dedicated to design (pharmacophore, docking, and binding energy) and to prepare an inspired derivatives of pyrazole and pyrazolo[1,5-d]pyrimidine as promising anticancer agents, which can act by targeting CDK2. The promising compounds were selected according to their fit-value and binding energy scores. The anticancer activity against MCF-7 was tested for the prepared compounds and compounds 2, 3b, and 7b showed expressive activity with IC50 1.75, 0.89 and 1.32 µM respectively. The CDK2 evaluation was carried out to estimate the efficiency of the prepared compounds as promising inhibitors. The results revealed that compound 3b with effective inhibitory activity against tumor growth and with its potent inhibition against the CDK2 enzyme with percent inhibition 86 would be a prospective anticancer agent. The prepared compounds with high biological activity could be used as lead inhibitors for the CDK2 kinase domain.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 3; 453-468
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A developed nonlinear model for the location-allocation and transportation problems in a cross-docking distribution network
Autorzy:
Nasrollahi, Saeid
Hosseini-Nasab, Hasan
Fakhrzad, Mohamad Bagher
Honarvar, Mahboobeh
Powiązania:
https://bibliotekanauki.pl/articles/2175835.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
cross-docking
location-allocation
transportation problem
mixed-integer non-linear model
consolidation
Opis:
The paper addresses the location-allocation and transportation problems in designing a cross-docking distribution network that consists of suppliers, cross-docks, and plants. A developed mixed-integer non- -linear model is proposed for a post-distribution cross-docking strategy with multiple cross-docks and products that cross-docks can be connected. The objective function is to minimise the total cost comprising the cost of established cross-docks and transportation costs. To obtain this model, first, two models are introduced and compared (basic non-linear model 1 and non-linear model 2 with the possibility of connections between cross-docks). Results indicate that the total cost is decreased when the connection between cross-docks exists. So, model 2 is more efficient and suitable than model 1. Then, consolidation of plant orders is added to model 2, and the developed model is formulated. Finally, some problems with different sizes are generated randomly and solved by GAMS software to evaluate the model accuracy.
Źródło:
Operations Research and Decisions; 2022, 32, 1; 127--148
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling drug-receptor interactions in an average binding site for NK2
Autorzy:
Alagona, G.
Ghio, C.
Monti, S.
Powiązania:
https://bibliotekanauki.pl/articles/1953954.pdf
Data publikacji:
1998
Wydawca:
Politechnika Gdańska
Tematy:
receptor modelling
docking
non covalent interactions
molecular mechanics
molecular dynamics
substituent effects
Opis:
A tentative procedure applied to the search for a new antagonist of neurokinin A (NKA) is presented. In parallel a tentative 3-D model of the NK2 receptor was created, using bacteriorhodopsin (BRD) as a template. The residue substitutions were performed in BRD to obtain the sequence for NK2R_H and the seven a-helical segments were optimized forcing the a-helical backbone to match the corresponding aligned parts of BRD, while the arrangements of the side chains were model built based on available site-directed mutagenesis studies. Constrained MM and molecular dynamics simulations were carried out H-bonding a low energy conformer of the known drugs to residues in the receptor site, allowing both the receptor site and drugs to relax. The Connolly surface for each ligand allowed to determine an "average" binding site in which all the low energy conformers of known and prospective drugs were docked and classified according to a statistical index. The whole procedure was repeated exploiting the lately published structure of an actual G protein coupled receptor as a better template, thus producing a cavity in the binding site to directly dock the drugs. Corollary validations of the force fields used are also mentioned. In addition intra- and intermolecular interactions suitable to produce more active drugs were evaluated.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1998, 2, 4; 563-581
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conformational Stability, TGA, and Molecular Docking Investigations of p-Coumaric Acid with Special Relevance to Anti-Cancer and Antibacterial Activity
Autorzy:
Sathish, M.
Meenakshi, G.
Xavier, S.
Sebastian, S.
Powiązania:
https://bibliotekanauki.pl/articles/1032309.pdf
Data publikacji:
2017-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
conformational analysis
molecular geometry
molecular docking
p-coumaric acid
hydrogen bonding
TGA
Opis:
In this work an attempt is made to analysis of the possible different conformers of p-coumaric acid (PCA) by using density functional method. The total energy of four possible conformers were calculated by using B3LYP/6-311G(d,p) method. Computational result identifies that the most stable conformer of PCA is C2. The formation of inter- and intra-molecular hydrogen bonding between -OH and -COOH group gave the evidence for dimer formation for PCA molecule. The highest occupied-lowest unoccupied molecular orbital analysis shows that the negative electrostatic region situated over the -COOH group and positive electrostatic potential region are localized on ring system and all hydrogen. The PCA has been screened to anti-microbial activity and found to exhibit anti-bacterial effects. Molecular docking results suggest that PCA may exhibit inhibitory activity against lung cancer protein and may act as potential against lung cancer.
Źródło:
Acta Physica Polonica A; 2017, 131, 6; 1512-1518
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular characterization of Capra hircus lysosomal α-mannosidase and potential mutant site for the therapy of locoweed poisoning
Autorzy:
Xiangya, Kong
Jiangye, Zhang
Ying, Wu
Jianfei, Li
Qinfan, Li
Powiązania:
https://bibliotekanauki.pl/articles/1039336.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
lysosomal α-mannosidase
Capra hircus
locoweed poisoning
molecular docking
Pichia pastoris expression
Opis:
Lysosomal α-Mannosidase (LAM) belongs to the glycoside hydrolyzing enzymes family 38 and is involved in the biosynthesis and turnover of N-linked glycoproteins process. Locoweeds, which contain swainsonine (SW) that inhibits LAM, are the main poisoning plants in many regions of the world, and thereby resulting in animal poisoning or even death. Based on regions of protein sequence conservation between LAM from Bos taurus and Homo sapiens, we cloned cDNA encoding Capra hircus LAM (chLAM). Expression of cDNA in Pichia pastoris resulted in the secretion of aLAM activity into the culture medium. The recombinant chLAM was activated 1.6 and 1.2-fold with Zn2+ and Ca2+, respectively. By homology modeling, molecular docking and mutant analysis, we obtained the probable binding modes of SW at the allosteric sites of chLAM, and the potential mutant sites for the resistance to SW. Prediction of SW sensitivity to A28 W/G, D58 Y/G mutant chLAM is lower than wild type chLAM. The obtained results lead to a better understanding of not only interactions between substrate/SW and chLAM, but also of a potential strategy for a novel therapy for locoweed poisoning.
Źródło:
Acta Biochimica Polonica; 2014, 61, 1; 77-84
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the free binding energy of 1,25-dihydroxyvitamin D3 and its analogs with the human VDR receptor model
Autorzy:
Kamel, Karol
Kolinski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1039678.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
KH 1060
drug design
docking
EB 1089
vitamin D
RO 25-9022
Opis:
1,25-dihydroxyvitamin D3 has quite significant anticancer properties, but its strong calcemic effect in principle excludes it as a potential anticancer drug. Currently, a lot of effort is being devoted to develop potent anticancer analogs of 1,25-dihydroxyvitamin D3 that would not induce hypercalcemia during therapy. In this work, the free binding energy of the VDR receptor with 1,25-dihydroxyvitamin D3 and its three potent analogs (EB 1089, KH 1060 and RO 25-9022) is calculated and compared with each other. With this approach, we could estimate the relative binding affinity of the most potent analog, RO 25-9022, and also revealed a quite distinct mechanism of its interaction with VDR.
Źródło:
Acta Biochimica Polonica; 2012, 59, 4; 653-660
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel tetrameric lectin from Lycoris aurea with four mannose binding sites per monomer
Autorzy:
Liu, Jiwei
Xu, Xiaochao
Liu, Jinzhi
Balzarini, Jan
Luo, Yongtin
Kong, Yang
Li, Jian
Chen, Fang
Van Damme, Els
Bao, Jinku
Powiązania:
https://bibliotekanauki.pl/articles/1041131.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
sequence alignment
mannose-binding lectin
Lycoris aurea agglutinin
molecular modeling and docking
Opis:
The mannose-binding agglutinin from bulbs of Lycoris aurea (LAA) agglutinates rabbit but not human erythrocytes. The molecular mass of the monomer in SDS/PAGE is 12 kDa while the apparent molecular mass in gel filtration is 48 kDa, indicating that LAA is a homotetramer. The full-length cDNA of LAA contains 683 bp with an open reading frame encoding a protomer of 162 amino-acid residues. Hydrophobic Cluster Analysis and molecular modeling of the 109-residue mature polypeptide suggested a similar secondary and tertiary structure to those of Narcissus pseudonarcissus agglutinin (NPA). Molecular docking revealed that, besides the three mannose-binding sites common among Amaryllidaceae lectins, LAA also contains a fourth unique mannose-binding site formed by a tryptophan cluster. The existence of four mannose-binding sites in each monomer of LAA is very unusual and has only been reported for NPA earlier.
Źródło:
Acta Biochimica Polonica; 2007, 54, 1; 159-166
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular docking and pharmacokinetics study for selected leaf phytochemicals from Carica papaya Linn. against dengue virus protein, NS2B/NS3 protease
Autorzy:
Ghosh, Ipsita
Talukdar, Partha
Powiązania:
https://bibliotekanauki.pl/articles/1063045.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Carica papaya
Dengue virus protein
Molecular docking
Pharmacokinetics
Phytochemicals
Preotein-ligand binding
Opis:
The Culex mosquito-transmitted dengue virus (DENV) under genus Flavivirus, a member of Flaviviridae family, cause dengue fever worldwide also in many parts of India. At present, antidengue drugs or therapies from natural products of the leaf extracts of papaya plant, Carica papaya Linn. is interesting research. The present computational prediction was attempted to detect inhibitory potential of established ten common phytoconstituents of leaf of C. papaya against the protein of dengue virus (NS2B/NS3 protease) through molecular docking and pharmacokinetic study. The NS2B/NS3 protease (receptor) was obtained (PDB: 2FOM) from European Protein databank. The phytochemicals ten numbers were used as ligands in this predictive study. The information of these phytochemicals was obtained from PubChem database. The software viz. PyRx (Version 0.8) and ADMET-SAR online tool were used for the study of molecular docking as well as pharmacokinetics study. The present results indicate that natural products from C. papaya interacts with different residues of dengue virus protein having favourable binding energy and suitable drug likeness. It was observed that apigenin and luteolin favourable binding energy (-7.7 Kcal/mol) but luteolin may be suitable lead compound due to inhibitory effect on target receptor as well as ADME efficacy through pharmacokinetics evaluation. In conclusion, it was obtained through faster screening by using software that phytoconstitent luteolin from C. papaya may use future drug as lead compound for the prevention of dengue fever. It is suggested that functional assay (in vivo and in vitro assay) should be carried out for the validation of present predictive data.
Źródło:
World Scientific News; 2019, 124, 2; 264-278
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Supply chain management in a production company
Zarządzanie łańcuchem dostaw w przedsiębiorstwie produkcyjnym
Autorzy:
Grotkiewicz, Katarzyna
Peszek, Agnieszka
Obajtek, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/93403.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
supply chain
management
cross-docking
company
costs
łańcuch dostaw
zarządzanie
przedsiębiorstwo
koszty
Opis:
The purpose of the supply chain management is to ensure a competitive advantage as well as specific added value for the benefit of all supply chain links. Appropriate management practices generate many benefits, allow for savings in particular segments of the supply chain by means of cost reduction, which in turn directly leads to the competitiveness of enterprises belonging to a specific chain. The above-mentioned issues have become the subject of this thesis. Therefore, the British American Tobacco distribution network is strategically analyzed. A location and number of distribution centers will be i.a. taken into account. Reduction in the number of distribution centers will be suggested in order to reduce logistics costs in the supply chain, i.e. transport and storage. The studies were carried out based on the analysis of flows and route planning of the logistics operator for the transport of the company's products.
Celem pracy jest przeprowadzenie analizy strategicznej sieci dystrybucyjnej firmy British American Tobacco. Pod uwagę brana będzie lokalizacja oraz liczba centrów dystrybucyjnych. Zaproponowana zostanie redukcja ilości centrów dystrybucyjnych w celu zmniejszenia kosztów logistycznych w łańcuchu dostaw tj. transportu oraz magazynowania. Badania przeprowadzono w oparciu o analizę przepływów i planowania tras realizowanych przez operatora logistycznego dla przewozu produktów firmy.
Źródło:
Agricultural Engineering; 2019, 23, 3; 61-69
2083-1587
Pojawia się w:
Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exploring the potential of Inula viscosa extracts for antioxidant, antiproliferative and apoptotic effects on human liver cancer cells and a molecular docking study
Autorzy:
Kheyar-Kraouche, Naoual
Boucheffa, Saliha
Bellik, Yuva
Farida, Kheyar
Brahmi-Chendouh, Nabila
Powiązania:
https://bibliotekanauki.pl/articles/16706188.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Inula viscosa leaf extracts
antioxidant
cytotoxic effect
HepG2 cells
ROS
molecular docking
Opis:
In folk medicine, Inula viscosa (Asteraceae) has been traditionally utilized for treating various ailments, including diabetes, bronchitis, diarrhea, rheumatism, and injuries. In this study, we aimed to investigate the chemical composition, antioxidant, antiproliferative, and apoptotic properties of I. viscosa leaf extracts. Extraction was performed using solvents of varying polarities. Antioxidant activity was determined using Ferric reducing antioxidant power (FRAP) and 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays. The results revealed that aqueous ethanol (70%) and aqueous ethyl acetate (70%) extracts contained high levels of phenols (645.58 ± 8.77 mg CE/g) and flavonoids (180.69 ± 1.54 mg QE/g), respectively. Aqueous ethanol (70%) extract exhibited the highest antioxidant activity with IC50 of 572.74 μmol TE/g DW (μmol Trolox equivalent in 1g of dry extract) in the ABTS assay and 76 862.06 μM TE/g DW in the FRAP test. All extracts showed a considerable dose-dependent cytotoxic effect on cancerous HepG2 cells (P < 0.05). The aqueous ethanol extract demonstrated the highest inhibitory effect (IC50 = 1.67 mg/ml). Treatment with aqueous ethanol (70%) and pure ethyl acetate extracts significantly increased the number of apoptotic cells to 8 and 6%, respectively, in HepG2 cells (P < 0.05). Additionally, the aqueous ethanol extract significantly elevatedreactive oxygen species (ROS) levels (53%) in HepG2 cells. The molecular docking study identified paxanthone and banaxanthone E as the compounds that exhibited the highest binding affinities with BCL-2. This study demonstrated the potent antioxidant, antiproliferation, and intracellular ROS production of I. viscosa leaf extracts. Further studies should be conducted to identify the active compounds involved.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 2; 183-198
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of CD4plus T cell epitopes from Staphylococcus aureus secretome using immunoinformatic prediction and molecular docking
Autorzy:
Francis, D.
Kumar, A.
Chittalakkottu, S.
Powiązania:
https://bibliotekanauki.pl/articles/2096359.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CD4+
T cell
epitope prediction
secretory proteins
Staphylococcus aureus
peptide vaccine
molecular docking
Opis:
One major reason for the lack of clinical success of Staphylococcus aureus vaccine candidates is the inability of the antigens to develop a CD4+ T cell-mediated immune response. Hence, it is important to identify CD4+ T cell antigens from S. aureus. CD4+ T cells are activated following the presentation of epitopes derived from exogenous proteins on HLA class II molecules. Fifty-nine secretory proteins of S. aureus were analyzed computationally for the presence of HLA class II binding peptides. Fifteen-mer peptides were generated, and their binding to 26 HLA class II alleles was predicted. The structural feasibility of the peptides binding to HLA-II was studied using molecular docking. Of the 16,724 peptides generated, 6991 (41.8%) were predicted to bind to any one of the alleles with an IC50 value below 50 nM. Comparative sequence analysis revealed that only 545 of the strong binding peptides are non-self in the human system. Approximately 50% of the binding peptides were monoallele-specific. Moreover, approximately 95% of the predicted strong binding non-self peptides interacted with the binding groove of at least one HLA class II molecule with a glide score better than !10 kcal/mol. On the basis of the analysis of the strength of binding, non-self presentation in the human host, propensity to bind to a higher number of alleles, and energetically favorable interactions with HLA molecules, a set of 11 CD4+ T cell epitopes that can be used as vaccine candidates was identified.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 1; 43-54
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generating and modeling of braking curve and the assessment of the quality of automatic stopping of the train
Autorzy:
Anuszczyk, J.
Gocek, A.
Pacholski, K.
Dominikowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/374056.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
train
braking
docking
quality factor
controller
simulation
pociąg
hamowanie
dokowanie
wskaźnik jakości
kontroler
symulacja
Opis:
This paper presents the theory about generating the braking curve and the analysis of the influence of the braking controller parameters on the generation of the braking curve of the train. In this paper, computed examples of braking quality developed using generic quality factor are shown, and on the basis of the calculations, weight components of the factor and an additional criterion for assessing the quality of braking were proposed. It has been demonstrated that the developed algorithms can be used to verify the effectiveness of the braking controller and the adjustment of the terms, and the change of these algorithms affects the shape of the generated braking curve of the train. It has been shown that the analysis of a failure of the propulsion car revealed the existence of a safe braking area. The performed statistical analysis confirmed the normal distribution of the scatter of braking results, for which the regression model fitted.
Źródło:
Transport Problems; 2018, 13, 2; 13-25
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of molecular docking to detect antihypertensive phytochemicals of Oxalis corniculata Linn. against angiotensin converting enzyme
Autorzy:
Mondal, Satinath
Talukdar, Partha
Mondal, Tarit Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1162851.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Angiotensin-converting enzyme
Antihypertensive phytochemicals
Molecular docking and interaction
Oxalis corniculata
Receptor-ligand binding
Opis:
The locally available medicinal plant, Oxalis corniculata Linn. is a common weed and used by villagers to prevent several diseases. The objective of the present study was to detect receptor-ligand binding energy and interaction through molecular docking for phytocompounds established in O. corniculata against angiotensin converting enzyme (ACE) (PDB ID: 1O86). Molecular docking was performed by using PyRx (Version 0.8) for the structure-based virtual screening and visualized the interaction in the MGL tool (Version 1.5.6). Among 16 phytochemicals and 4 antihypertensive synthetic drugs, highest binding energy value (Kcal/mol) was obtained in Apigenin (-8.9) compared to other four drugs such as Lisinopril (-7.7), Temocapril (-7.6), Enalapril (-7.5) and Captopril (-5.7). The binding interaction of target protein with this phytocompound found binding at active site may be showed as competitive inhibitor. In conclusion, phytoligand Apigenin can be a suitable lead compound for antihypertensive agent and an alternative of synthetic drug as per binding energy value and molecular interaction. It is suggesting further pharmacological and toxicological assay with this phytoligand after extraction from O. corniculata to validate the present results of computational screening.
Źródło:
World Scientific News; 2018, 110; 42-55
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design, molecular docking, drug-likeness, and molecular dynamics studies of 1,2,4-trioxane derivatives as novel Plasmodium falciparum falcipain-2 (FP-2) inhibitors
Autorzy:
Ghosh, S.
Chetia, D.
Gogoi, N.
Rudrapal, M.
Powiązania:
https://bibliotekanauki.pl/articles/2096418.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
1
2
4-trioxane
Plasmodium falciparum
drug resistance
molecular docking
molecular dynamics
falcipain 2 inhibitors
Opis:
Despite significant progress made in drug discovery and development over the past few decades, malaria remains a life-threatening infectious disease across the globe. Because of the widespread emergence of drug-resistant strains of Plasmodium falciparum, the clinical utility of existing drug therapies including Artemisinin-based Combination Therapies (ACTs) in the treatment of malaria has been increasingly limited. It has become a serious health concern which, therefore, necessitates the development of novel drug molecules and/or alternative therapies to combat, particularly resistant P. falciparum. The objective of the present study was to develop 1,2,4-trioxane derivatives as novel antimalarial agents that would be effective against resistant P. falciparum. In our study, 15 new trioxane derivatives were designed by molecular modification of the 1,2,4-trioxane scaffold as possible antimalarial agents. Molecular modeling studies of trioxane derivatives were performed based on the CADD approach using Biovia Discovery Studio (DS) 2018 software. The protein-ligand docking study was performed against P. falciparum falcipain 2 (FP-2) using the simulation-based docking protocol LibDock by the flexible docking method. The assessment of drug-likeness, ADMET properties, and toxicity was also performed. Furthermore, the compounds CC3 and CC7, which showed the best binding affinity against the target P. falciparum FP-2, were investigated by molecular dynamics (MD) simulation studies followed by the calculation of MM-PBSA binding free energy of protein-ligand complexes using DS 2020. Results of the docking study showed that among the 15 compounds, three trioxane derivatives were found to possess promising binding affinity with LibDock scores ranging from 117.16 to 116.90. Drug-likeness, ADMET, and toxicity properties were found to be satisfactory for all the compounds. Among the 15 compounds, two compounds, namely CC3 and CC7, showed the highest binding affinity against FP-2 with LibDock score of 117.166 and 117.200, respectively. The Libdock score of the co-crystal inhibitor was 114.474. MD studies along with MM-PBSA calculations of binding energies further confirmed the antimalarial potential of the compounds CC3 and CC7, with the formation of well-defined and stable receptor-ligand interactions against the P. falciparum FP-2 enzyme. Additionally, the selectivity of trioxane hits identified as potential inhibitors of P. falciparum cysteine protease FP-2 was determined on human cysteine proteases such as cathepsins (Cat K and Cat L), which are host homologous. Finally, it was concluded that the newly designed 1,2,4-trioxane derivatives can be further studied for in vitro and in vivo antimalarial activities for their possible development as potent antimalarial agents effective against resistant P. falciparum
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2021, 102, 3; 257-275
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of molecular docking to study 6-Mercaptopurine-binding to human serum albumin
Zastosowanie dokowania molekularnego w badaniu wiązania 6-Merkaptopuryny z albuminą surowicy krwi ludzkiej
Autorzy:
Sochacka, Jolanta
Pawełczak, Bartosz
Sobczak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1038307.pdf
Data publikacji:
2011
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
molecular docking
human serum albumin
6-mercaptopurine
dokowanie molekularne
albumina surowicy krwi ludzkiej
6-merkaptopuryna
Opis:
Albumina surowicy krwi ludzkiej pełni ważną rolę w transporcie i rozmieszczeniu w organizmie substancji endogennych i egzogennych, w tym również leków. Znajomość mechanizmu oddziaływania leków z albuminą może być pomocna w przewidywaniu potencjalnych interakcji z innymi lekami i substancjami chemicznymi na etapie wiązania z albuminą, zapewniając bezpieczną terapię, szczególnie w terapii wielolekowej. Symulacja tego oddziaływania metodą dokowania molekularnego pozwala na opisanie zależności między strukturą i aktywnością biologiczną i może być alternatywą lub uzupełnieniem badań in vitro. W pracy przedstawiono możliwość wykorzystania techniki dokowania molekularnego do oceny oddziaływania 6-Merkaptopuryny (6-MP), leku stosowanego w terapii przeciwnowotworowej i immunosupresyjnej, z albuminą surowicy krwi ludzkiej. Procedurę dokowania 6-MP do cząsteczki albuminy przeprowadzono za pomocą programu komputerowego Molegro Virtual Docker (MVD). Strukturę rentgenowską HSA opisaną kodem 1AO6 pobrano z bazy białek Protein Data Bank (PDB.org). Układ przestrzenny cząsteczki 6-MP o zminimalizowanej energii opracowano za pomocą programu CS Chem3D Ultra CambridgeSoft v.7.0.0. Cząsteczkę 6-MP, ze względu na fakt, że w roztworze wodnym o fi zjologicznym pH występuje w mieszaninie formy zdysocjowanej i niezdysocjowanej dokowano jednocześnie w obu formach. Uzyskane wyniki wskazują, że 6-MP może wiązać się do albuminy w co najmniej dwóch miejscach wiążących. W przypadku cząsteczki niezdysocjowanej oddziaływania wiążące mają charakter hydrofobowy, natomiast cząsteczka zdysocjowana oddziałuje z albuminą głównie poprzez wiązania wodorowe oraz oddziaływanie elektrostatyczne z dodatnio naładowaną resztą lizyny, które stabilizuje powstający kompleks.
Human serum albumin (HSA) is a major protein component of blood plasma and due to its endogenous and exogenous ligand binding properties, plays an important role in the distribution and therapeutic eff ectiveness of drug. The studies of interaction of ligands with HSA by molecular docking are important from a theoretical viewpoint as they attempt to explain the relationship between the structure of ligand and the function of protein and also in terms of practical applications in medicine. In the work, the interaction of HSA with 6-Mercaptopurine (6-MP) used as anticancer and immunosuppressive drug was examined by molecular docking. The docking procedure was performed with the program Molegro Virtual Docker (MVD). The initial 6-MP conformation was energy-minimized using semiempirical (AM1) method implemented in CS Chem3D Ultra CambridgeSoft v.7.0.0 software and then imported to MVD. The X-ray structure of HSA (1AO6) was obtained from the Protein Data Bank (PDB). The potential binding sites (cavities) were identifi ed automatically using the cavities detection algorithm. The 6-MP molecules in solution at pH 7.4 occur as a mixture of neutral and anionic forms, therefore both forms of 6-MP were docked one at a time. Docking experiment uncovered at least two binding sites of 6-MP in HSA structure. It was found that in case of neutral form of 6-MP the binding force was mainly hydrophobic interaction, while the electrostatic interaction and hydrogen bond were involved in the binding process of anionic form of 6-MP.
Źródło:
Annales Academiae Medicae Silesiensis; 2011, 65, 3; 41-48
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mixed-integer programming formulations for the truck scheduling problem with fixed outbound departures
Rozwiązywanie problemu harmonogramowania przewozów przy ustalonych załadunkach
Autorzy:
Wolff, Pascal
Huo, Jiazhen
Pfohl, Hans-Christian
Powiązania:
https://bibliotekanauki.pl/articles/1835497.pdf
Data publikacji:
2021
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
cross-docking
truck scheduling
mixed-integer programming
logistics
optimization
harmonogramowanie przewozów
programowanie różnych zmiennych
logistyka
optymalizacja
Opis:
Truck scheduling at cross-docking terminals has received much academic attention over the last three decades. A vast number of mixed-integer programming models have been proposed to assign trucks to dock-doors and time slots. Surprisingly, only a few models assume fixed outbound truck departures that are often applied in the less-than-truckload or small parcel and express delivery industry. To the best of our knowledge, none of these papers explore whether a discrete-time or continuous-time model formulation has a better computational performance. This paper attempts to close this research gap and tries to shed light on which type of formulation is advantageous. Therefore, a variant of the truck scheduling problem with fixed outbound departures is considered. This problem's objective is to find a feasible truck schedule that minimizes the number of delayed freight units. Methods: We propose two model formulations for the described variant of the truck scheduling problem with fixed outbound departures. Specifically, the problem is formulated as a discrete-time and a continuous-time mixed-integer programming model. Results: A computational experiment is conducted in order to assess the computational performance of the presented model formulations. We compare the discrete-time and continuous-time formulation in terms of both the solution quality and computational time. Conclusions: The computational results show that the proposed discrete-time model formulation can solve problem instances of medium size to proven optimality within less than one minute. The continuous-time model formulation, on the other hand, can solve small instances to optimality. However, it requires longer solution times than the discrete-time formulation. Furthermore, it is unable to solve medium-sized instances within a 5-minute time limit. Thus, it can be summarized that the proposed discrete-time model formulation is clearly superior to the continuous-time model formulation.
Harmonogramowanie przewozów oraz cross-dockingu leży w zasięgu zainteresowania uczonych już od ponad 30 lat. W tym okresie zaproponowało wiele różnych modeli programistycznych tablic awizacyjnych. Jednak zaledwie kilka modeli bierze pod uwagę stałe załadunki, które często są stosowane w przewozach niepełno samochodowych oraz kurierskich. Według naszego rozeznania, żaden z dostępnych modeli nie stosuje modelowania czasem w sposób dyskretny lub ciągły dla uzyskania lepszego wyniku. Celem pracy jest uzupełnienie tej luki w badaniach. Dlatego też rozważono wariant problemu harmonogramowania przewozów ze stałymi załadunkami z celem nadrzędnym znalezienia takiego sposobu harmonogramowania aby minimalizował on liczbę opóźnionych przewozów. Metody: Zaproponowano dwa modele, opisujące harmonogramowanie przewozów ze stałymi załadunkami. Problem ten został sformułowany poprzez model programistyczny ze zmienną czasu w ujęciu dyskretnym i ciągłym. Wyniki: Przeprowadzono symulację komputerową w celu określenie działania opracowanych modeli. Porównano wyniki pod względem jakości uzyskanego wyniku oraz niezbędnego czasu dla obliczeń. Wnioski: Na podstawie uzyskanych wyników można stwierdzić, że proponowany model dyskretny może rozwiązywać problem średniej wielkości w czasie niższej niż minuta. Model oparty na czasie ciągłym uzyskał z kolei optymalizację przy małych przypadkach. Wymagało to jednak dłuższego czasu obliczeniowego. Dodatkowo nie uzyskano dla rozwiązań średniej wielkości czasu niższego od 5 minut. Dlatego też wysunięto wniosek, że model dyskretny jest lepszym w porównaniu z modelem ciągłym.
Źródło:
LogForum; 2021, 17, 2; 243--251
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nitrosubstituted analogs of isoxazolines and isoxazolidines: a surprising estimation of their biological activity via molecular docking
Autorzy:
Zawadzińska, Karolina
Gostyński, Bartłomiej
Powiązania:
https://bibliotekanauki.pl/articles/35126576.pdf
Data publikacji:
2023
Wydawca:
Radomskie Towarzystwo Naukowe
Tematy:
isoxazolines
isoxazolidines
molecular docking
molecular dynamics
biological activity
izoksazoliny
izoksazolidyny
dokowanie molekularne
dynamika molekularna
aktywność biologiczna
Opis:
The biological activities in the field of antimicrobial application of trihalomethylated isoxazolines and isoxazolidines were investigated by means of molecular docking. In our work, we compared these two groups of heterocyclic compounds due to their strength of non-covalent binding affinity with several exemplary proteins that are known to partake in various biological processes. The obtained results show that the investigated compounds possess higher binding affinities to selected proteins than many hitherto known and applied compounds.
Źródło:
Scientiae Radices; 2023, 2, 1; 25-46
2956-4808
Pojawia się w:
Scientiae Radices
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular docking studies on the phytoconstituents as therapeutic leads against SARS-CoV-2
Molekularne badania dokujące nad zastosowaniem fitoskładników w terapii przeciw SARS-CoV-2
Autorzy:
Tiwari, Abhishek
Tiwari, Varsha
Verma, Navneet
Singh, Anita
Kumar, Manish
Saini, Vipin
Sahoo, Biswa Mohan
Kaushik, Deepak
Verma, Ravinder
Sagadevan, Suresh
Powiązania:
https://bibliotekanauki.pl/articles/2202611.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:
Covid-19
spike glycoprotein
AutoDock Vina
Mpro
docking
artemisinin
withaferin A
glikoproteina kolca
dokowanie
artemizynina
witaferyna A
Opis:
Because of the present pandemic researchers are seeking for phytocandidates that can inhibit or stop SARS-CoV-2. The main protease (Mpro) of SARS-CoV-2 and spike glycoprotein (S) are both suppressed by bioactive compounds found in plants that work by docking them together. The Mpro proteins 6LU7 (complex with an inhibitor N3) and 5C3N (space group C2221) were employed in docking research. PyRx and AutoDock Vina software were used as docking engine. 22 identified phytoconstituents were selected from IMPPAT, a manually curated database, on the basis of their antiviral effects. Docking studies showed that phytoconstituents β-amyrin (-8.4 kcal/mol), withaferin A (-8.3 kcal/mol), oleanolic acid (-7.8 kcal/mol), and patentiflorin A (-8.1 kcal/mol) had the best results against 5C3N Mpro protein whereas kuwanon L (-7.1 kcal/mol), β-amyrin (-6.9 kcal/mol), oleanolic acid (-6.8 kcal/mol), cucurbitacin D (-6.5 kcal/mol), and quercetin (-6.5 kcal/mol) against 6LU7 Mpro protein. All the compounds were examined for their ADMET characteristics using SwissDock. Present research reports that the phytoconstituents along with docking score will be helpful for future drug development against Covid-19.
W związku z pandemią prowadzone są badania mające na celu znalezienie fitosubstancji, które mogą hamować lub zatrzymywać rozwój SARS-CoV-2. Działanie głównych białek proteazy (Mpro) SARS-CoV-2 i glikoproteiny kolca (S) jest osłabiane przez związki bioaktywne występujące w roślinach poprzez proces dokowania. Do badań dokujących użyto białka Mpro 6LU7 (kompleks z inhibitorem N3) i 5C3N (grupa przestrzenna C2221). Jako silnik dokujący zastosowano PyRx i AutoDock Vina. Zidentyfikowano 22 fitoskładniki wybrane z bazy danych IMPPAT, z uwzględnieniem ich działania przeciwwirusowego. Najbardziej skuteczne w przypadku białka Mpro 5C3N okazały się fitoskładniki β-amyryna (-8,4 kcal/mol), witaferyna A (-8,3 kcal/mol), kwas oleanolowy (-7,8 kcal/mol) i patentifloryna A (-8,1 kcal/mol), a w przypadku białka Mpro 6LU7 kuwanon L (-7,1 kcal/mol), β-amyryna (-6,9 kcal/mol), kwas oleanolowy (-6,8 kcal/mol), kukurbitacyna D (-6,5 kcal/mol) i kwercetyna (-6,5 kcal/mol). Wszystkie substancje zbadano pod kątem ich właściwości ADMET przy użyciu SwissDock. Wykazano, że fitoskładniki mogą być pomocne w pracach nad lekami przeciwko Covid-19.
Źródło:
Polimery; 2022, 67, 7-8; 355---374
0032-2725
Pojawia się w:
Polimery
Dostawca treści:
Biblioteka Nauki
Artykuł

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