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@ARTICLE{AlfonsoPrieto:862730,
author = {Alfonso-Prieto, Mercedes and Navarini, Luciano and Carloni,
Paolo},
title = {{U}nderstanding {L}igand {B}inding to {G}-{P}rotein
{C}oupled {R}eceptors {U}sing {M}ultiscale {S}imulations},
journal = {Frontiers in molecular biosciences},
volume = {6},
issn = {2296-889X},
address = {Lausanne},
publisher = {Frontiers},
reportid = {FZJ-2019-02973},
pages = {29},
year = {2019},
abstract = {Human G-protein coupled receptors (GPCRs) convey a wide
variety of extracellular signals inside the cell and they
are one of the main targets for pharmaceutical intervention.
Rational drug design requires structural information on
these receptors; however, the number of experimental
structures is scarce. This gap can be filled by
computational models, based on homology modeling and docking
techniques. Nonetheless, the low sequence identity across
GPCRs and the chemical diversity of their ligands may limit
the quality of these models and hence refinement using
molecular dynamics simulations is recommended. This is the
case for olfactory and bitter taste receptors, which
constitute the first and third largest GPCR groups and show
sequence identities with the available GPCR templates below
$20\%.$ We have developed a molecular dynamics approach,
based on the combination of molecular mechanics and coarse
grained (MM/CG), tailored to study ligand binding in GPCRs.
This approach has been applied so far to bitter taste
receptor complexes, showing significant predictive power.
The protein/ligand interactions observed in the simulations
were consistent with extensive mutagenesis and functional
data. Moreover, the simulations predicted several binding
residues not previously tested, which were subsequently
verified by carrying out additional experiments. Comparison
of the simulations of two bitter taste receptors with
different ligand selectivity also provided some insights
into the binding determinants of bitter taste receptors.
Although the MM/CG approach has been applied so far to a
limited number of GPCR/ligand complexes, the excellent
agreement of the computational models with the mutagenesis
and functional data supports the applicability of this
method to other GPCRs for which experimental structures are
missing. This is particularly important for the challenging
case of GPCRs with low sequence identity with available
templates, for which molecular docking shows limited
predictive power.},
cin = {IAS-5 / INM-9},
ddc = {570},
cid = {I:(DE-Juel1)IAS-5-20120330 / I:(DE-Juel1)INM-9-20140121},
pnm = {574 - Theory, modelling and simulation (POF3-574)},
pid = {G:(DE-HGF)POF3-574},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31131282},
UT = {WOS:000466812100001},
doi = {10.3389/fmolb.2019.00029},
url = {https://juser.fz-juelich.de/record/862730},
}