Results 11 to 20 of about 44,745 (116)

A new polymodal gating model of the proton-activated chloride channel.

open access: yesPLoS Biology, 2023
The proton-activated chloride (PAC) channel plays critical roles in ischemic neuron death, but its activation mechanisms remain elusive. Here, we investigated the gating of PAC channels using its novel bifunctional modulator C77304.
Piao Zhao   +13 more
doaj   +1 more source

Structural and molecular insight into the pH-induced low-permeability of the voltage-gated potassium channel Kv1.2 through dewetting of the water cavity.

open access: yesPLoS Computational Biology, 2020
Understanding the gating mechanism of ion channel proteins is key to understanding the regulation of cell signaling through these channels. Channel opening and closing are regulated by diverse environmental factors that include temperature, electrical ...
Juhwan Lee   +3 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

Energetic contributions to channel gating of residues in the muscle nicotinic receptor β1 subunit. [PDF]

open access: yesPLoS ONE, 2013
In the pentameric ligand-gated ion channel family, transmitter binds in the extracellular domain and conformational changes result in channel opening in the transmembrane domain.
Gustav Akk   +5 more
doaj   +1 more source

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

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

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

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

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

Role of the Ion Channel Extracellular Collar in AMPA Receptor Gating

open access: yesScientific Reports, 2017
AMPA subtype ionotropic glutamate receptors mediate fast excitatory neurotransmission and are implicated in numerous neurological diseases. Ionic currents through AMPA receptor channels can be allosterically regulated via different sites on the receptor ...
Maria V. Yelshanskaya   +3 more
doaj   +1 more source

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