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@ARTICLE{Lazaratos:943341,
author = {Lazaratos, Michalis and Siemers, Malte and Brown, Leonid S.
and Bondar, Ana-Nicoleta},
title = {{C}onserved hydrogen-bond motifs of membrane transporters
and receptors},
journal = {Biochimica et biophysica acta / Biomembranes},
volume = {1864},
number = {6},
issn = {0005-2728},
address = {Amsterdam},
publisher = {Elsevier},
reportid = {FZJ-2023-00947},
pages = {183896 -},
year = {2022},
abstract = {Membrane transporters and receptors often rely on conserved
hydrogen bonds to assemble transient paths for ion transfer
or long-distance conformational couplings. For transporters
and receptors that use proton binding and proton transfer
for function, inter-helical hydrogen bonds of titratable
protein sidechains that could change protonation are of
central interest to formulate hypotheses about reaction
mechanisms. Knowledge of hydrogen bonds common at sites of
potential interest for proton binding could thus inform and
guide studies on functional mechanisms of
protonation-coupled membrane proteins. Here we apply
graph-theory approaches to identify hydrogen-bond motifs of
carboxylate and histidine sidechains in a large data set of
static membrane protein structures. We find that
carboxylate-hydroxyl hydrogen bonds are present in numerous
structures of the dataset, and can be part of more extended
H-bond clusters that could be relevant to conformational
coupling. Carboxylate-carboxyamide and imidazole-imidazole
hydrogen bonds are represented in comparably fewer protein
structures of the dataset. Atomistic simulations on two
membrane transporters in lipid membranes suggest that many
of the hydrogen bond motifs present in static protein
structures tend to be robust, and can be part of larger
hydrogen-bond clusters that recruit additional hydrogen
bonds.},
cin = {IAS-5 / INM-9},
ddc = {570},
cid = {I:(DE-Juel1)IAS-5-20120330 / I:(DE-Juel1)INM-9-20140121},
pnm = {5241 - Molecular Information Processing in Cellular Systems
(POF4-524)},
pid = {G:(DE-HGF)POF4-5241},
typ = {PUB:(DE-HGF)16},
pubmed = {35217000},
UT = {WOS:000788122400005},
doi = {10.1016/j.bbamem.2022.183896},
url = {https://juser.fz-juelich.de/record/943341},
}