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Wyszukujesz frazę "receptor protein" wg kryterium: Temat


Tytuł:
The retromer: a multiprotein complex mediating multiple functions
Autorzy:
Bayle, V.
Zelazny, E.
Miege, C.
Fobis-Loisy, I.
Jaillais, Y.
Gaude, T.
Powiązania:
https://bibliotekanauki.pl/articles/80162.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
multicellular organism
signalling molecule
hormone receptor
ion channel
retromer
protein complex
membrane
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative analysis of the ternary complex of RNA polymerase, cyclic AMP receptor protein and DNA by fluorescence anisotropy measurements
Autorzy:
Bonarek, Piotr
Kędracka-Krok, Sylwia
Kępys, Barbara
Wasylewski, Zygmunt
Powiązania:
https://bibliotekanauki.pl/articles/1040712.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cAMP receptor protein
fluorescence anisotropy
RNA polymerase
Opis:
The in vitro formation of transcription complexes with Escherichia coli RNA polymerase was monitored using fluorescence anisotropy measurements of labeled fragments of DNA. The multicomponent system consisted of holo or core RNA polymerase (RNAP) and lac or gal promoter fragments of DNA (in different configurations), in the presence or absence of CRP activator protein (wt or mutants) with its ligand, cAMP. Values of the apparent binding constants characterizing the system were obtained, as a result of all processes taking place in the system. The interaction of the promoters with core RNAP in the absence of CRP protein was characterized by apparent binding constants of 0.67 and 1.9 × 106 M-1 for lac166 and gal178, respectively, and could be regarded as nonspecific. The presence of wt CRP enhanced the strength of the interaction of core RNAP with the promoter, and even in the case of gal promoter it made this interaction specific (apparent binding constant 2.93 × 107 M-1). Holo RNAP bound the promoters significantly more strongly than core RNAP did (apparent binding constants 1.46 and 40.14 × 106 M-1 for lac166 and gal178, respectively), and the presence of CRP also enhanced the strength of these interactions. The mutation in activator region 1 of CRP did not cause any significant disturbances in the holo RNAP-lac promoter interaction, but mutation in activator region 2 of the activator protein substantially weakened the RNAP-gal promoter interaction.
Źródło:
Acta Biochimica Polonica; 2008, 55, 3; 537-547
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Binding of Aedes aegypti trypsin modulating oostatic factor [Aea-TMOF] to its receptor stimulates phosphorylation and protease processing of gut-membrane proteins
Autorzy:
Borovsky, D.
Hamdaoui, A.
Powiązania:
https://bibliotekanauki.pl/articles/55079.pdf
Data publikacji:
2008
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
protease processing
Aedes aegypti
electrophoresis
trypsin modulating oostatic factor
phosphorylation
mosquito
insect
larva
gut-membrane protein
fluorography
gut receptor
Opis:
The binding of TMOF to its gut receptor was followed by incubating guts removed from male and female Aedes aegypti. TMOF at physiological concentrations, in the presence of [γ32P]ATP, causes phosphorylation and release of gut-membrane protein (45 kDa) that is further processed by proteolysis. In the presence of protease inhibitors only the 45 kDa protein was released. The phosphorylation and processing of the 45 kDa protein does not happen in the absence of TMOF. Both larvae and adult guts release the protein in the presence of TMOF. Male Ae. aegypti do not synthesize trypsin in their gut and do not release the 45 kDa protein in the presence of TMOF because a TMOF receptor is probably absent. Homogenized guts do not release the 45 kDa protein, indicating that the protease processing or the ecto-protein kinase activity is probably reduced after breaking the tissue. The 45 kDa phosphorylated protein can be dephosphorylated by alkaline phosphatase and protein phosphatase, indicating that the phosphate group is covalently linked to either a serine or a tyrosine moiety. This is the first report that shows that in insects, binding of a peptide hormone activates its receptor by proteolysis.
Źródło:
Pestycydy; 2008, 1-2; 13-25
0208-8703
Pojawia się w:
Pestycydy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CRK5 as a convergence node between senescence and abiotic stress responses
Autorzy:
Burdniak, P.
Glow, D.
Rusaczonek, A.
Karpinski, S.
Powiązania:
https://bibliotekanauki.pl/articles/80846.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
receptor-like protein kinase
signal transduction
signalling pathway
cysteine-rich receptor-like kinase
Arabidopsis thaliana
senescence
abiotic stress
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Targets for majority of drugs: G protein-coupled receptors - their structure and interaction with bioligands
Autorzy:
Ciarkowski, J.
Czaplewski, C.
Pasenkiewicz-Gierula, M.
Powiązania:
https://bibliotekanauki.pl/articles/1953953.pdf
Data publikacji:
1998
Wydawca:
Politechnika Gdańska
Tematy:
G protein-coupled receptor
molecular modelling
GPCR/bioligand interaction
molecular dynamics
membrane
Opis:
G protein-coupled receptors (GPCRs) are the most frequent targets for many drugs. They form the largest superfamily of integral membrane proteins, of which more than 1000 members have the following common features: (i) All GPCRs form 7 hydrophobic a-helices of length ~38A (25 amino acids, 7 turns) along a single chain. The consecutive helices alternatively cross the membrane, starting from the extracellular side, so that they form a heptahelical transmembrane domain interwoven with 6 loops, of which the even ones plus the N-terminus create the receptor's extracellular domain while the odd ones plus the C-terminus form its intracellular domain. (ii) All GPCRs are stimulated by diverse extracellular (primary) signals. (iii) Stimulated GPCRs convey the primary signals via their transmembrane and intracellular domains to the cytosolic peripheral heterotrimeric GTP-binding proteins (G proteins), mediating the signal's further transduction to various cellular second messenger systems. A current status of structural studies on GPCRs, consisting of low ~7.5A resolution experimental structures and supplementary molecular modeling, is outlined. Subsequently, some results of authors' own work on studying essential interactions of the V2 vasopressin renal receptor (V2R) with its agonist [Arg8]Vasopressin (AVP) and selected antagonists are presented, as well as their possible impact on the biological signal transduction is discussed. Finally, perspectives for future developments are sketched.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 1998, 2, 4; 583-599
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship between receptors for insulin-like growth factor - I, steroid hormones and apoptosis-associated proteins in canine mammary tumors
Autorzy:
Dolka, I.
Motyl, T.
Malicka, E.
Sapierzynski, R.
Fabisiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/32455.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
relationship
receptor
insulin-like growth factor
steroid hormone
apoptosis-associated protein
dog
mammary tumour
cancer
Opis:
In the veterinary literature there are few data concerning the expression of insulin-like growth factor type I (IGF-IR) in the canine mammary gland tumors. The aim of the present study was the evaluation of IGF-IR expression and its correlation to the expression of estrogen receptor α (ERα) and progesterone receptor (PR), proteins: Bcl-2, Bax, p53 in canine mammary gland tumors, and also a correlation with other features: bitch’s age, tumor diameter, histologic type of tumor, degree of histologic malignancy, proliferate activity. The study was done on 112 epithelial neoplasms: 21 (19%) were adenoma, 38 (34%) complex carcinoma (adenocarcinoma), 47 (42%) simple carcinoma (adenocarcinoma) and 6 (5%) solid carcinoma. Histochemistry and immunohistochemistry methods were employed. It was shown that more common and/or higher IGF-IR expression in cells of canine mammary gland tumors was related to the histologic type of cancer of worse prognostic (solid and simple carcinoma), high histologic degree of malignancy (IIIo) but the statistical analysis did not reveal any significant differences. We observed the high degree of IGF-IR expression in tumors which displayed the high ERα and PR expression. These results suggest the involvement of IGF-IR in the development of hormonosensitive canine mammary tumors. Additionally, the significant positive correlation between expression of IGF-IR and p53, Bax was found. Our study provides some evidence that interactions exist between the IGF-IR and these apoptosis-associated proteins may contribute to the development and progression of canine mammary gland tumors. These results require further investigations.
Źródło:
Polish Journal of Veterinary Sciences; 2011, 14, 2
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cysteine-rich receptor-like kinases (CRK) in ROS signalling in Arabidopsis thaliana
Autorzy:
Gauthier, A.
Idanheimo, N.
Salojarvi, J.
Wrzaczek, M.
Kangasjarvi, J.
Powiązania:
https://bibliotekanauki.pl/articles/80229.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
receptor-like kinase
reactive oxygen species
signalling
Arabidopsis thaliana
protein-protein interaction
crk mutant
xanthine oxidase
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functionality versus strength - has functional selection taken place in the case of the ecdysteroid receptor response element?
Autorzy:
Grad, Iwona
Kochman, Marian
Ożyhar, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1043745.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
ultraspiracle
nuclear receptor
Drosophila
protein-DNA interaction
ecdysteroid receptor
20-hydroxyecdysone
Opis:
Nuclear receptors are ligand-dependent transcription factors responsible for controlling differentiation, growth and development of higher eukaryotes. Three amino acids within the recognition α-helix of the DNA-binding domain of the nuclear receptors constitute the so-called "P-box" which determines response element specificity. In the ultraspiracle (Usp) protein, which together with EcR forms the heterodimeric ecdysone receptor, the P-box residues are E19, G20 and G23. Substitution of E19, the most characteristic amino acid for estrogen receptor-like P-boxes, with alanine showed that the mutation did not appreciably alter the affinity of the wild-type Usp DNA-binding domain (UspDBDWT) for a probe containing natural ecdysone response element (hsp27wt). Since in many cases E19 contacts a G/C base pair in position -4, which is absent in hsp27wt, we analysed the interaction of UspDBDWT, E19A and other P-box region mutants with the hsp27wt derivative which contains a G/C instead of an T/A base pair in position -4. UspDBDWT exhibited higher affinity for this element than for hsp27wt. Moreover, a different interaction pattern of P-box region mutants was also observed. Thus we conclude that the E19 residue of UspDBD is not involved in any hsp27wt sequence-discerning contacts. However, substitution of the hsp27wt T/A base pair in position -4 with G/C generates target sequence with distinct functional characteristics and possibly with a new specificity. These results could serve as a basis for understanding the role of the presence of a T/A or G/C base-pair in the position -4 in the two types of ecdysone response elements found in nature.
Źródło:
Acta Biochimica Polonica; 2002, 49, 3; 747-756
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationships between EGFR-initiated signalling, DNA double-strand break rejoining and survival in X-irradiated human glioma M059 cells
Autorzy:
Grądzka, I.
Buraczewska, I.
Szumiel, I.
Powiązania:
https://bibliotekanauki.pl/articles/146764.pdf
Data publikacji:
2008
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
human glioma M059 K and J cells
DNA-dependent protein kinase (DNA-PK)
radiosensitivity
DNA double-strand break (DSB) rejoining
epidermal-growth-factor-receptor (EGFR)
signalling inhibitors: tyrphostin
Opis:
The aim of this study was to investigate the effect of signalling inhibition on survival and double-strand break (DSB) rejoining in cells differing in sensitivity to inhibitors, X-rays and bleomycin. Human glioma M059 cells, K (relatively radioresistant) and J (radiosensitive, defective in DSB rejoining for lack of DNA-dependent protein kinase catalytic subunit, DNA-PKcs) were pretreated with signalling inhibitors: tyrphostin AG 1478, specific for epidermalgrowth- factor-receptor (EGFR) kinase or PD 98059, specific for kinase MEK 1/2 (mitogen-activated, extracellular signal-activated kinases 1 and 2). Subsequently, the cells were X-irradiated or treated with bleomycin. Cell survival was determined by clonogenicity test. DSB rejoining was monitored with the use of pulsed-field gel electrophoresis (PFGE). We found that in X-irradiated M059 K cells EGFR kinase activity was necessary for efficient DSB rejoining and the kinase inhibitor, tyrphostin AG 1478, acted as radiosensitizer in the dose range that reduced cell survival to 0.7-0.8. Inhibition of EGFR kinase, however, did not decrease survival or affect DSB rejoining in DNA-PKcs-deficient M059 J cells. These results indicated that the decrease in cell survival was due to a disturbed DSB rejoining by the DNA-PK dependent system. In contrast, inhibition of MEK 1/2 kinase on EGFR downstream signalling pathway by PD 98059 did not affect DSB rejoining in either cell line and exerted a radioprotective effect.
Źródło:
Nukleonika; 2008, 53, 2; 37-44
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the peptide-antipeptide interactions in interleukin-1 receptor system.
Autorzy:
Kluczyk, Alicja
Cebrat, Marek
Zbozień-Pacamaj, Renata
Lisowski, Marek
Stefanowicz, Piotr
Wieczorek, Zbigniew
Siemion, Ignacy
Powiązania:
https://bibliotekanauki.pl/articles/1043318.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
vaccinia virus C10L protein
immunomodulation
interleukin-1 receptor antagonist
complementary peptides
interleukin-1
Opis:
Interleukin-1 receptor antagonist (IL-1Ra) and vaccinia virus protein C10L share a VTXFYF motif, with X being Lys or Arg residue, respectively. Peptides of such sequence compete successfully with IL-1 for the cellular receptor. A pair of complementary peptides, based on the Siemion's hypothesis on the periodicity of the genetic code (QWLNIN and QWANIN), and another pair, in which, following the Root- Bernstein theory, Lys was used as complementary amino acid to Phe (QWLKIK and QWAKIK), were investigated for the peptide-antipeptide interactions using mass spectrometry (ESI-MS) and circular dichroism (CD) methods. The CD measurements indicated some conformational changes, more pronounced in the Siemion's pairs, however, no heterodimer formation was found by MS. In the region of IL-1 receptor situated close to the position of IL-1Ra in the IL-1Ra-receptor complex, a KQKL motif is present, suggesting a possibility of complementary recognition of the Root-Bernstein type in the IL-1 receptor. The biological activity of the complementary peptides is similar to that of the original ones. They efficiently compete with IL-1 and show moderate immunosuppressory activity in humoral and cellular immune response. The inhibition of the IL-1-IL-1 receptor interaction may result from the complementary peptides acting as mini-receptors with affinity for IL-1.
Źródło:
Acta Biochimica Polonica; 2004, 51, 1; 57-66
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A brief overview of the process of the elucidation of GnRH structure (1971)
Autorzy:
Kochman, K.
Powiązania:
https://bibliotekanauki.pl/articles/80024.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
luteinizing hormone
follicle stimulating hormone
receptor protein
protein G
cell membrane
hypothalamic peptide
adrenocorticotrophin
radioimmunoassay
central nervous system
gonadotrophin releasing hormone
receptor
neuroendocrinology
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2012, 93, 4
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Direct, calcium-independent, regulation of NADPH oxidase during plant innate immunity
Autorzy:
Kodota, Y.
Sklenar, J.
Derbyshire, P.
Stransfeli, L.
Asai, S.
Ntoukakis, V.
Shirasu, K.
Jones, A.
Zipfel, C.
Powiązania:
https://bibliotekanauki.pl/articles/80067.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
plant
innate immunity
pathogen-associated molecular pattern
pattern recognition receptor
reactive oxygen species
NADPH oxidase
calcium-dependent protein kinase
phosphorylation
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Screening of chromosomal region 21q22.3 for mutations in genes associated with neuronal Ca2+ signalling in bipolar affective disorder
Autorzy:
Kostyrko, Andrzej
Hauser, Joanna
Rybakowski, Janusz
Trzeciak, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/1041245.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
TRPM2 protein
AMPA glutamate receptor B
bipolar affective disorder
Opis:
The therapeutic effect of lithium in bipolar affective disorder may be connected with decreasing intracellular Ca2+ concentrations. Several linkage studies have identified a potential bipolar affective disorder susceptibility locus within chromosomal region 21q22.3. This locus contains two genes expressed in the brain - ADARB1 and TRPM2 - involved in regulating intracellular Ca2+ concentrations. The aim of this study was an identification of mutations in the coding sequences of ADARB1 and TRPM2 and their association with bipolar affective disorder. For that purpose we screened 60 patients with bipolar affective disorder and a control group of 66 subjects using single strand conformation polymorphism and sequence analysis. For rapid screening we performed restriction fragment length polymorphism analysis. Screening of bipolar affective disorder patients for mutations in TRPM2 led to identification of three novel and four known transitions. Two transitions resulted in the substitutions: R755C and A890V. Screening of the coding sequence of ADARB1 did not reveal any mutations except one already known transition. A comparison of the transition frequency in patients and controls does not support association of the detected mutations with bipolar affective disorder. According to our results, bipolar affective disorder may not be caused by mutations in ADARB1. However, this study does not exclude TRPM2 as a candidate gene since we have screened only about 30 per cent of the entire coding sequence of this large gene.
Źródło:
Acta Biochimica Polonica; 2006, 53, 2; 317-320
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polypharmacology – a challenge for current drug design approaches
Autorzy:
Podlewska, Sabina
Kurczab, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/93192.pdf
Data publikacji:
2019
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Tarnowie
Tematy:
G protein-coupled receptor
polypharmacology
serotonin receptor
dopamine receptor
antipsychotic profile
ligand
receptor sprzężony z białkiem G
polifarmakologia
receptor serotoninowy
receptor dopaminowy
profil przeciwpsychotyczny
Opis:
Drug design process faces many challenges, and the most important ones are connected with side effects. Finding compounds that possess affinity towards target of interest is relatively simple; however, an approach one disease-one target is now making space for the search of polypharmacological ligands, where activity towards several proteins is considered at one time. Such proteins are not always the target ones, but very often such panels include also anti-targets, interaction with which is not desired, due to the side effects that may occur upon such contact. In the study, we examined ligands of four G protein-coupled receptors, forming antipsychotic profile: dopamine receptor D2, serotonin receptors 5-HT2A, 5-HT2C (anti-target), and 5-HT6. Number of ligands belonging to particular activity groups, as well as the selected compound structures are examined in detail. Also compound similarity between sets of different activity groups is analysed, giving a picture of difficulty of constructing molecular modeling methodologies that can help in the search of compounds with desired activity profile.
Źródło:
Science, Technology and Innovation; 2019, 6, 3; 19-23
2544-9125
Pojawia się w:
Science, Technology and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interleukin-6 biology is coordinated by membrane bound and soluble receptors.
Autorzy:
Rose-John, Stefan
Powiązania:
https://bibliotekanauki.pl/articles/1043433.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
inflammation
cytokine
sgp130Fc fusion protein
gp130
cytokine receptor
soluble receptor
Opis:
Cytokine receptors exist in membrane bound and soluble form. Both forms bind their ligands with comparable affinity. While most soluble receptors are antagonists in that they compete for the ligands with their membrane counterparts, some soluble receptors are agonists. In this case, the complex of ligand and soluble receptor binds on target cells to a second receptor subunit and initiates signal transduction. Soluble receptors of the IL-6 family of cytokines are agonists. In vivo, the IL-6/soluble IL-6R complex stimulates several types of target cells not stimulated by IL-6 alone, since they do not express the membrane bound IL-6R. This process has been named transsignaling. We have shown that in several chronic inflammatory diseases like chronic inflammatory bowl disease, peritonitis and rheumatoid arthritis, transsignaling via the soluble IL-6R complexed to IL-6 is a crucial point in the transition from the acute to the chronic state of the disease. The mechanism by which the IL-6/ soluble IL-6R complex regulates the inflammatory state is discussed.
Źródło:
Acta Biochimica Polonica; 2003, 50, 3; 603-611
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł

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