Electronic Polarizability Tunes the Function of the Human Bestrophin 1 Cl⁻ Channel.

Bestrophin channels Molecular dynamics anion permeation anion-π chloride selectivity

Journal

bioRxiv : the preprint server for biology
Titre abrégé: bioRxiv
Pays: United States
ID NLM: 101680187

Informations de publication

Date de publication:
14 Nov 2023
Historique:
pubmed: 28 11 2023
medline: 28 11 2023
entrez: 28 11 2023
Statut: epublish

Résumé

Mechanisms of anion permeation within ion channels and nanopores remain poorly understood. Recent cryo-electron microscopy structures of the human bestrophin 1 chloride channel (hBest1) provide an opportunity to evaluate ion interactions predicted by molecular dynamics (MD) simulations against experimental observations. We implement the fully polarizable forcefield AMOEBA in MD simulations of open and partially-open states of the hBest1. The AMOEBA forcefield models multipole moments up to the quadrupole; therefore, it captures induced dipole and anion-

Identifiants

pubmed: 38014257
doi: 10.1101/2023.11.14.567055
pmc: PMC10680768
pii:
doi:

Types de publication

Preprint

Langues

eng

Subventions

Organisme : NIGMS NIH HHS
ID : R01 GM127652
Pays : United States
Organisme : NIGMS NIH HHS
ID : R35 GM149252
Pays : United States

Déclaration de conflit d'intérêts

Declaration of interests J.C. is an employee of IBM Research.

Auteurs

Linda X Phan (LX)

Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, OX1 3PU, UK.
Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK.

Aaron P Owji (AP)

Department of Opthalmology, Columbia University, New York, NY, USA.
Department of Pharmacology, Columbia University, New York, NY, USA.
Simons Electron Microscopy Center, New York Structural Biology Center, New York, NY 10027, USA.

Tingting Yang (T)

Department of Opthalmology, Columbia University, New York, NY, USA.

Jason Crain (J)

Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK.
IBM Research Europe, Hartree Centre, Daresbury, WA4 4AD, UK.

Mark S P Sansom (MSP)

Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK.

Stephen J Tucker (SJ)

Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, OX1 3PU, UK.
Kavli Institute for Nanoscience Discovery, University of Oxford, OX1 3QU, UK.

Classifications MeSH