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A peek behind the scenes of selectivity filter gating

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (8)

JGP study reveals how interactions with pore-helix residues control filter inactivation in the prokaryotic potassium channel MthK. JGP study (Kopec et......

Cold and warmth intensify pain-linked sodium channel gating effects and persistent currents

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (9)

Voltage-gated sodium channels (Na-v) are key players in excitable tissues with the capability to generate and propagate action potentials. Mutations i......

The fast block to polyspermy breaks with convention

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (10)

JGP study (Komondor et al. 2023. J. Gen. Physiol. https://doi.org/10.1085/jgp.202213258) reveals that conventional PLC activation pathways are not req......

Changing face of contractile activation in striated muscle at physiological temperature

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (12)

Calcium binding to troponin, with subsequent displacement of its linked tropomyosin molecule on the thin filament surface, cooperates with myosin bind......

Permeant cations modulate pore dynamics and gating of TRPV1 ion channels

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 156 (1)

TRPV1 ion channels are important players in thermal and chemical sensation and have roles in pathological states. In this work, Garcia-avila et al. em......

A cooperative knock-on mechanism underpins Ca2+-selective cation permeation in TRPV channels

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (5)

The selective exchange of ions across cellular membranes is a vital biological process. Ca2+-mediated signaling is implicated in a broad array of phys......

Optimization of CFTR gating through the evolution of its extracellular loops

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (4)

CFTR chloride channel mutations cause the lethal and incurable disease cystic fibrosis (CF). CFTR is activated by phosphorylation, and phosphorylated ......

Mechanism of external K+ sensitivity of KCNQ1 channels

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (5)

KCNQ1 voltage-gated K+ channels are involved in a wide variety of fundamental physiological processes and exhibit the unique feature of being markedly......

Myosin and tropomyosin-troponin complementarily regulate thermal activation of muscles

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (12)

Ishii et al. analyze the microheating-induced sliding movements of reconstituted thin filaments in an in vitro motility assay. They find that the temp......

Kv12 channels flick the switch

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (9)

JGP study (Hermanstyne et al. 2023. J. Gen. Physiol.) shows that Kv12-encoded K+ currents reduce the repetitive firing rates of SCN neurons at night, ......

A high-throughput electrophysiology assay to study the response of PIEZO1 to mechanical stimulation

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (12)

Murciano et al. present an assay to investigate PIEZO1 channels by combining planar patch clamp with mechanical stimulation. This technique will enabl......

Probenecid affects muscle Ca2+ homeostasis and contraction independently from pannexin channel block

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (4)

Tight control of skeletal muscle contractile activation is secured by the excitation-contraction (EC) coupling protein complex, a molecular machinery ......

Blue flash sheds light on the roles of individual phosphoserines in CFTR channel activation

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (6)

Light-controlled availability for phosphorylation reveals dominant roles of select R-domain serines in CFTR channel activation.

Depolarization-induced bursts of miniature synaptic currents in individual synapses of developing cerebellum

期刊: JOURNAL OF GENERAL PHYSIOLOGY, 2023; 155 (5)

In central synapses, spontaneous transmitter release observed in the absence of action potential firing is often considered as a random process lackin......

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