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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Front+Physiol
2016 ; 7
(ä): 494
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English Wikipedia
Membrane-Mediated Oligomerization of G Protein Coupled Receptors and Its
Implications for GPCR Function
#MMPMID27826255
Gahbauer S
; Böckmann RA
Front Physiol
2016[]; 7
(ä): 494
PMID27826255
show ga
The dimerization or even oligomerization of G protein coupled receptors (GPCRs)
causes ongoing, controversial debates about its functional role and the coupled
biophysical, biochemical or biomedical implications. A continously growing number
of studies hints to a relation between oligomerization and function of GPCRs and
strengthens the assumption that receptor assembly plays a key role in the
regulation of protein function. Additionally, progress in the structural analysis
of GPCR-G protein and GPCR-ligand interactions allows to distinguish between
actively functional and non-signaling complexes. Recent findings further suggest
that the surrounding membrane, i.e., its lipid composition may modulate the
preferred dimerization interface and as a result the abundance of distinct
dimeric conformations. In this review, the association of GPCRs and the role of
the membrane in oligomerization will be discussed. An overview of the different
reported oligomeric interfaces is provided and their capability for signaling
discussed. The currently available data is summarized with regard to the
formation of GPCR oligomers, their structures and dependency on the membrane
microenvironment as well as the coupling of oligomerization to receptor function.