Targets for majority of drugs: G protein-coupled receptors - their structure and interaction with bioligands

• Autorzy: Ciarkowski J. , Czaplewski C. , Pasenkiewicz-Gierula M.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

G protein-coupled receptor; molecular modelling; GPCR/bioligand interaction; molecular dynamics; membrane

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 1998
• Tom: Vol. 2, No 4
• Strony: 583--599
• Opis fizyczny: Bibliogr. 48 poz., rys.

Twórcy

autor

Ciarkowski J.

• Faculty of Chemistry, University of Gdansk, Sobieskiego 18, 80-952 Gdansk, Poland

autor

Czaplewski C.

• Faculty of Chemistry, University of Gdansk, Sobieskiego 18, 80-952 Gdansk, Poland

autor

Pasenkiewicz-Gierula M.

• Department of Biophysics, Jagiellonian University, A. Mickiewicza 3, 31-120 Cracow, Poland

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