A dynamic view of peptides and proteins in membranes.
Fiche publication
Date publication
octobre 2008
Auteurs
Membres identifiés du Cancéropôle Est :
Pr BECHINGER Burkhard
Tous les auteurs :
Bechinger B
Lien Pubmed
Résumé
Biological membranes are highly dynamic supramolecular arrangements of lipids and proteins, which fulfill key cellular functions. Relatively few high-resolution membrane protein structures are known to date, although during recent years the structural databases have expanded at an accelerated pace. In some instances the structures of reaction intermediates provide a stroboscopic view on the conformational changes involved in protein function. Other biophysical approaches add dynamic aspects and allow one to investigate the interactions with the lipid bilayers. Membrane-active peptides fulfill many important functions in nature as they act as antimicrobials, channels, transporters or hormones, and their studies have much increased our understanding of polypeptide-membrane interactions. Interestingly several proteins have been identified that interact with the membrane as loose arrays of domains. Such conformations easily escape classical high-resolution structural analysis and the lessons learned from peptides may therefore be instructive for our understanding of the functioning of such membrane proteins.
Référence
Cell Mol Life Sci. 2008 Oct;65(19):3028-39.