Mutagenesis computer experiments in pentameric ligand-gated ion channels: the role of simulation tools with different resolution.

Abstract:

:Pentameric ligand-gated ion channels (pLGICs) are an important class of widely expressed membrane neuroreceptors, which play a crucial role in fast synaptic communications and are involved in several neurological conditions. They are activated by the binding of neurotransmitters, which trigger the transmission of an electrical signal via facilitated ion flux. They can also be activated, inhibited or modulated by a number of drugs. Mutagenesis electrophysiology experiments, with natural or unnatural amino acids, have provided a large body of functional data that, together with emerging structural information from X-ray spectroscopy and cryo-electron microscopy, are helping unravel the complex working mechanisms of these neuroreceptors. Computer simulations are complementing these mutagenesis experiments, with insights at various levels of accuracy and resolution. Here, we review how a selection of computational tools, including first principles methods, classical molecular dynamics and enhanced sampling techniques, are contributing to construct a picture of how pLGICs function and can be pharmacologically targeted to treat the disorders they are responsible for.

journal_name

Interface Focus

journal_title

Interface focus

authors

Crnjar A,Comitani F,Melis C,Molteni C

doi

10.1098/rsfs.2018.0067

subject

Has Abstract

pub_date

2019-06-06 00:00:00

pages

20180067

issue

3

eissn

2042-8898

issn

2042-8901

pii

rsfs20180067

journal_volume

9

pub_type

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