Results 1 to 10 of about 144,668 (268)

Conformational plasticity of NaK2K and TREK2 potassium channel selectivity filters

open access: yesNature Communications, 2023
The potassium channel selectivity filter is responsible for conduction and selectivity of K + over other cations. Here, the authors use a combination of single molecule FRET, non-canonical fluorescent amino acid incorporation, and single channel patch ...
Marcos Matamoros   +4 more
doaj   +1 more source

Skeletal muscle delimited myopathy and verapamil toxicity in SUR2 mutant mouse models of AIMS

open access: yesEMBO Molecular Medicine, 2023
ABCC9‐related intellectual disability and myopathy syndrome (AIMS) arises from loss‐of‐function (LoF) mutations in the ABCC9 gene, which encodes the SUR2 subunit of ATP‐sensitive potassium (KATP) channels.
Conor McClenaghan   +7 more
doaj   +1 more source

An allosteric modulator activates BK channels by perturbing coupling between Ca2+ binding and pore opening

open access: yesNature Communications, 2022
Ca2+ activated BK channels are important for neural and muscle function. Here authors use a compound, BC5, to show that the interface between the cytosolic and voltage sensing domains is a major allosteric pathway for Ca2+ binding to open the channel.
Guohui Zhang   +12 more
doaj   +1 more source

A Unique High‐Output Cardiac Hypertrophy Phenotype Arising From Low Systemic Vascular Resistance in Cantu Syndrome

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background Cardiomegaly caused by left ventricular hypertrophy is a risk factor for development of congestive heart failure, classically associated with decreased systolic and/or diastolic ventricular function.
Gautam K. Singh   +6 more
doaj   +1 more source

Engram Excitement [PDF]

open access: yesNeuron, 2019
Engram cells can encode and switch between multiple mnemonic functions, but how they intrinsically do so is unknown. Pignatelli, Ryan, and colleagues show that upon memory recall, the engram's excitability is transiently elevated, allowing its bearer to adapt to changing environments.
Albo, Zimbul, Gräff, Johannes
openaire   +3 more sources

Activation of the archaeal ion channel MthK is exquisitely regulated by temperature

open access: yeseLife, 2020
Physiological response to thermal stimuli in mammals is mediated by a structurally diverse class of ion channels, many of which exhibit polymodal behavior.
Yihao Jiang   +3 more
doaj   +1 more source

Oxidation Driven Reversal of PIP2-dependent Gating in GIRK2 Channels

open access: yesFunction, 2023
Physiological activity of G protein gated inward rectifier K+ (GIRK, Kir3) channel, dynamically regulated by three key ligands, phosphoinositol-4,5-bisphosphate (PIP2), Gβγ, and Na+, underlies cellular electrical response to multiple hormones and ...
Sun-Joo Lee   +3 more
doaj   +1 more source

Folding of prestin’s anion-binding site and the mechanism of outer hair cell electromotility

open access: yeseLife, 2023
Prestin responds to transmembrane voltage fluctuations by changing its cross-sectional area, a process underlying the electromotility of outer hair cells and cochlear amplification.
Xiaoxuan Lin   +5 more
doaj   +1 more source

Exciting and not so exciting roles of pannexins [PDF]

open access: yesNeuroscience Letters, 2019
It is the current view that purinergic signaling regulates many physiological functions. Pannexin1 (Panx1), a member of the gap junction family of proteins is an ATP releasing channel that plays important physio-pathological roles in various tissues, including the CNS.
Eliana, Scemes, Jana, Velíšková
openaire   +2 more sources

Domain–domain interactions determine the gating, permeation, pharmacology, and subunit modulation of the IKs ion channel

open access: yeseLife, 2014
Voltage-gated ion channels generate electrical currents that control muscle contraction, encode neuronal information, and trigger hormonal release. Tissue-specific expression of accessory (β) subunits causes these channels to generate currents with ...
Mark A Zaydman   +10 more
doaj   +1 more source

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