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@ARTICLE{Vickery:811524,
author = {Vickery, Owen N. and Machtens, Jan-Philipp and Tamburrino,
Giulia and Seeliger, Daniel and Zachariae, Ulrich},
title = {{S}tructural {M}echanisms of {V}oltage {S}ensing in
{G} {P}rotein-{C}oupled {R}eceptors},
journal = {Structure},
volume = {24},
number = {6},
issn = {0969-2126},
address = {London [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2016-03981},
pages = {997 - 1007},
year = {2016},
abstract = {G-protein-coupled receptors (GPCRs) form the largest
superfamily of membrane proteins and one-third of all drug
targets in humans. A number of recent studies have reported
evidence for substantial voltage regulation of GPCRs.
However, the structural basis of GPCR voltage sensing has
remained enigmatic. Here, we present atomistic simulations
on the δ-opioid and M2 muscarinic receptors, which suggest
a structural and mechanistic explanation for the observed
voltage-induced functional effects. The simulations reveal
that the position of an internal Na+ ion, recently detected
to bind to a highly conserved aqueous pocket in receptor
crystal structures, strongly responds to voltage changes.
The movements give rise to gating charges in excellent
agreement with previous experimental recordings.
Furthermore, free energy calculations show that these
rearrangements of Na+ can be induced by physiological
membrane voltages. Due to its role in receptor function and
signal bias, the repositioning of Na+ has important general
implications for signal transduction in GPCRs.},
cin = {ICS-4 / JARA-HPC},
ddc = {570},
cid = {I:(DE-Juel1)ICS-4-20110106 / $I:(DE-82)080012_20140620$},
pnm = {552 - Engineering Cell Function (POF3-552) / MOLECULAR
MODELLING OF BIFUNCTIONAL MEMBRANE TRANSPORT PROTEINS
$(jics40_20130501)$},
pid = {G:(DE-HGF)POF3-552 / $G:(DE-Juel1)jics40_20130501$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000377782200020},
pubmed = {pmid:27210286},
doi = {10.1016/j.str.2016.04.007},
url = {https://juser.fz-juelich.de/record/811524},
}