Results 41 to 50 of about 654,231 (380)

Voltage-Dependent Calcium Channels at the Plasma Membrane, but Not Vesicular Channels, Couple Exocytosis to Endocytosis

open access: yesCell Reports, 2012
Although calcium influx triggers endocytosis at many synapses and non-neuronal secretory cells, the identity of the calcium channel is unclear. The plasma membrane voltage-dependent calcium channel (VDCC) is a candidate, and it was recently proposed that
Lei Xue   +7 more
doaj   +1 more source

A functional role for small-conductance calcium-activated potassium channels in sensory pathways including nociceptive processes [PDF]

open access: yes, 2005
We investigated the role of small-conductance calcium-activated potassium (SK) and intermediate-conductance calcium-activated potassium channels in modulating sensory transmission from peripheral afferents into the rat spinal cord.
Bahia, PK   +7 more
core   +1 more source

Calcium channels for endocytosis [PDF]

open access: yesThe Journal of Physiology, 2014
Exocytosis and endocytosis need to be tightly balanced to keep cell surface area constant. This is of particular relevance for presynaptic terminals, where endocytosis needs to compensate for the ongoing exocytosis of synaptic vesicle to ultimately guarantee reliable synaptic transmission.
openaire   +3 more sources

MODULATION OF THE CGMP-GATED CHANNEL BY CALCIUM [PDF]

open access: yes, 1995
Calcium acting through calmodulin has been shown to regulate the affinity of cyclic nucleotide-gated channels expressed in cell lines.
LAGNADO, L, SAGOO, MS
core   +1 more source

A first-passage approach to diffusion-influenced reversible binding: insights into nanoscale signaling at the presynapse [PDF]

open access: yesSci. Rep. 11, 5377 (2021), 2020
Synaptic transmission between neurons is governed by a cascade of stochastic reaction-diffusion events that lead to calcium-induced vesicle release of neurotransmitter. Since experimental measurements of such systems are challenging due their nanometer and sub-millisecond scale, numerical simulations remain the principal tool for studying calcium ...
arxiv   +1 more source

Inhibition of Escherichia coli chemotaxis by omega-conotoxin, a calcium ion channel blocker [PDF]

open access: yes, 1993
Escherichia coli chemotaxis was inhibited by omega-conotoxin, a calcium ion channel blocker. With Tris-EDTA-permeabilized cells, nanomolar levels of omega-conotoxin inhibited chemotaxis without loss of motility.
Adler, Julius   +2 more
core   +3 more sources

Vacuolar calcium channels [PDF]

open access: yesJournal of Experimental Botany, 2007
The central vacuole is the largest Ca2+ store in a mature plant cell. Ca2+ release from this store contributes to Ca2+-mediated intracellular signalling in a variety of physiological responses. However, the routes for vacuolar Ca2+ release are not well characterized.
Gerald Schönknecht, Igor Pottosin
openaire   +3 more sources

Cortisol modulates calcium release-activated calcium channel gating in fish hepatocytes

open access: yesScientific Reports, 2021
Glucocorticoids (GCs) are rapidly released in response to stress and play an important role in the physiological adjustments to re-establish homeostasis.
Chinmayee Das   +3 more
doaj   +1 more source

Tonic activation of extrasynaptic NMDA receptors decreases intrinsic excitability and promotes bistability in a model of neuronal activity [PDF]

open access: yesInt J Mol Sci. 2019 Dec 27;21(1). pii: E206, 2018
NMDA receptors (NMDA-R) typically contribute to excitatory synaptic transmission in the central nervous system. While calcium influx through NMDA-R plays a critical role in synaptic plasticity, experimental evidence indicates that NMDAR-mediated calcium influx also modifies neuronal excitability through the activation of calcium-activated potassium ...
arxiv   +1 more source

The roles of the subunits in the function of the calcium channel [PDF]

open access: yes, 1991
Dihydropyridine-sensitive voltage-dependent L-type calcium channels are critical to excitation-secretion and excitation-contraction coupling. The channel molecule is a complex of the main, pore-forming subunit alpha 1 and four additional subunits: alpha ...
Biel, Martin   +5 more
core   +1 more source

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