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Wyszukujesz frazę "coarse-grained modeling" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
New UNRES force field package with Fortan 90
Autorzy:
Lubecka, E. A.
Liwo, A.
Powiązania:
https://bibliotekanauki.pl/articles/1938622.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska
Tematy:
UNRES
coarse-grained modeling
Fortran 90
modeling of protein structures
Opis:
UNRES is a coarse-grained model of polypeptide chains. Until now, each version of UNRES (UNRESPACK v.3.2 and earlier ones) has been written in Fortran 77. Due to the fact that Fortran 77 enables us to use only static arrays, the Fortran 77 version has significant memory problems, and consequently, UNRESPACK has had to be split into many programs. Our recent work was focused on creating a new UNRES package with Fortran 90 (UNRESPACK v.4.0), based on the previous Fortran 77 versions. Fortran 90 provides dynamic memory allocation, user defined data types, and structuring the code into modules which encompass subroutines, functions, and variables. Moreover, Fortran 90 adds internal functions and subroutines, providing greater flexibility. The whole code of UNRES with Fortran 90 has been restructured, so that it now consists of modules that can be assembled to create the main simulation program and companion programs. This approach enabled us to eliminate the redundancy of the code, while keeping all functions of the package.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2016, 20, 4; 399-407
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical unfolding of DDFLN4 studied by coarse-grained knowledge-based CABS model
Autorzy:
Kouza, M.
Jamroz, M.
Gront, D.
Kmiecik, S.
Koliński, A.
Powiązania:
https://bibliotekanauki.pl/articles/1935814.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska
Tematy:
CABS
coarse-grained modeling
lattice model
mechanical unfolding of proteins
Opis:
Mechanical unfolding of the fourth domain of Distyostelium discoideum filamin ( DDFLN 4) was studied using a CABS – coarse-grained knowledge-based protein model. Our study demonstrates that CABS is capable of reproducing the unfolding free energy landscape of protein unfolding and highlights an important role of non-native interactions in the protein unfolding process. The obtained three peaks in the force-extension profile suggest a four-state picture of DDFLN 4 protein unfolding and correspond reasonably to the results of the all-atom simulation in explicit solvent.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2014, 18, 4; 373--378
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
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:
TRACER. A new approach to comparative modeling that combines threading with free-space conformational sampling
Autorzy:
Trojanowski, Sebastian
Rutkowska, Aleksandra
Kolinski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1040439.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
protein comparative modeling
coarse grained protein models
protein threading
Monte Carlo simulations
replica exchange Monte Carlo
Opis:
A new approach to comparative modeling of proteins, TRACER, is described and benchmarked against classical modeling procedures. The new method unifies true three-dimensional threading with coarse-grained sampling of query protein conformational space. The initial sequence alignment of a query protein with a template is not required, although a template needs to be somehow identified. The template is used as a multi-featured fuzzy three-dimensional scaffold. The conformational search for the query protein is guided by intrinsic force field of the coarse-grained modeling engine CABS and by compatibility with the template scaffold. During Replica Exchange Monte Carlo simulations the model chain representing the query protein finds the best possible structural alignment with the template chain, that also optimizes the intra-protein interactions as approximated by the knowledge based force field of CABS. The benchmark done for a representative set of query/template pairs of various degrees of sequence similarity showed that the new method allows meaningful comparative modeling also for the region of marginal, or non-existing, sequence similarity. Thus, the new approach significantly extends the applicability of comparative modeling.
Źródło:
Acta Biochimica Polonica; 2010, 57, 1; 125-133
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
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