Results 21 to 30 of about 100,331 (293)

Markov state models of proton- and pore-dependent activation in a pentameric ligand-gated ion channel

open access: yeseLife, 2021
Ligand-gated ion channels conduct currents in response to chemical stimuli, mediating electrochemical signaling in neurons and other excitable cells.
Cathrine Bergh   +3 more
doaj   +1 more source

Membrane mechanics as a probe of ion-channel gating mechanisms [PDF]

open access: yes, 2008
The details of conformational changes undergone by transmembrane ion channels in response to stimuli, such as electric fields and membrane tension, remain controversial.
Kondev, Jane   +4 more
core   +1 more source

Transcending Markov: non-Markovian rate processes of thermosensitive TRP ion channels

open access: yesRoyal Society Open Science, 2023
The Markov state model (MSM) is a popular theoretical tool for describing the hierarchy of time scales involved in the function of many proteins especially ion channel gating. An MSM is a particular case of the general non-Markovian model, where the rate
Yuval Ben-Abu   +2 more
doaj   +1 more source

Effects of ionic strength on gating and permeation of TREK-2 K2P channels.

open access: yesPLoS ONE, 2021
In addition to the classical voltage-dependent behavior mediated by the voltage-sensing-domains (VSD) of ion channels, a growing number of voltage-dependent gating behaviors are being described in channels that lack canonical VSDs.
Linus J Conrad   +2 more
doaj   +1 more source

The First Extracellular Domain Plays an Important Role in Unitary Channel Conductance of Cx50 Gap Junction Channels. [PDF]

open access: yesPLoS ONE, 2015
Gap junction (GJ) channels provide direct passage for ions and small molecules to be exchanged between neighbouring cells and are crucial for many physiological processes.
Xiaoling Tong   +5 more
doaj   +1 more source

Stochastic ion channel gating in dendritic neurons: morphology dependence and probabilistic synaptic activation of dendritic spikes.

open access: yesPLoS Computational Biology, 2010
Neuronal activity is mediated through changes in the probability of stochastic transitions between open and closed states of ion channels. While differences in morphology define neuronal cell types and may underlie neurological disorders, very little is ...
Robert C Cannon   +2 more
doaj   +1 more source

Monod-Wyman-Changeux Analysis of Ligand-Gated Ion Channel Mutants [PDF]

open access: yes, 2017
We present a framework for computing the gating properties of ligand-gated ion channel mutants using the Monod-Wyman-Changeux (MWC) model of allostery. We derive simple analytic formulas for key functional properties such as the leakiness, dynamic range,
Einav, Tal, Phillips, Rob
core   +4 more sources

Ligand recognition and gating mechanism through three ligand-binding sites of human TRPM2 channel

open access: yeseLife, 2019
TRPM2 is critically involved in diverse physiological processes including core temperature sensing, apoptosis, and immune response. TRPM2’s activation by Ca2+ and ADP ribose (ADPR), an NAD+-metabolite produced under oxidative stress and neurodegenerative
Yihe Huang, Becca Roth, Wei Lü, Juan Du
doaj   +1 more source

Piezo’s membrane footprint and its contribution to mechanosensitivity

open access: yeseLife, 2018
Piezo1 is an ion channel that gates open when mechanical force is applied to a cell membrane, thus allowing cells to detect and respond to mechanical stimulation.
Christoph A Haselwandter   +1 more
doaj   +1 more source

An Unorthodox Mechanism Underlying Voltage Sensitivity of TRPV1 Ion Channel

open access: yesAdvanced Science, 2020
While the capsaicin receptor transient receptor potential vanilloid 1 (TRPV1) channel is a polymodal nociceptor for heat, capsaicin, and protons, the channel's responses to each of these stimuli are profoundly regulated by membrane potential, damping or ...
Fan Yang   +5 more
doaj   +1 more source

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