Computational modeling study of functional microdomains in cannabinoid receptor type 1

González A; Duran, LS; Araya-Secchi R.; Garate, JA; Pessoa-Mahana, CD; Lagos, CF; Perez-Acle, T

Abstract

The seven transmembrane helices (TMH) G-protein-coupled receptors (GPCRs) constitute one of the largest superfamily of signaling proteins found in mammals. Some of its members, in which the cannabinoid (CB) receptors are included, stand out because their functional states can be modulated by a broad spectrum of effector molecules. The relative ligand promiscuity exhibited by these receptors could be related with particular attributes conferred by their molecular architecture and represents a motivating issue to be explored. In this regard, this study represents an effort to investigate the cannabinoid receptor type 1 (CB1) ligand recognition plasticity, using comparative modeling, molecular dynamics (MD) simulations and docking. Our results suggest that a cooperative set of subtle structural rearrangements within the TMHs provide to the CB1 protein the plasticity to reach alternate configurations. These changes include the relaxation of intramolecular constraints, the rotations, translations and kinks of the majority of TMHs and the reorganization of the ligand binding cavities. © 2008 Elsevier Ltd. All rights reserved.

Más información

Título según WOS: Computational modeling study of functional microdomains in cannabinoid receptor type 1
Título según SCOPUS: Computational modeling study of functional microdomains in cannabinoid receptor type 1
Título de la Revista: BIOORGANIC & MEDICINAL CHEMISTRY
Volumen: 16
Número: 8
Editorial: PERGAMON-ELSEVIER SCIENCE LTD
Fecha de publicación: 2008
Página de inicio: 4378
Página final: 4389
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0968089608001910
DOI:

10.1016/j.bmc.2008.02.070

Notas: ISI, SCOPUS