Results 41 to 50 of about 2,269 (179)

Permeation mechanisms through the selectivity filter and the open helix bundle crossing gate of GIRK2

open access: yesComputational and Structural Biotechnology Journal, 2020
G protein-gated inwardly rectifying potassium channels (GIRK) are essential for the regulation of cellular excitability, a physiological function that relies critically on the conduction of K+ ions, which is dependent on two molecular mechanisms, namely ...
Dai-Lin Li   +3 more
doaj   +1 more source

The Role of Parvalbumin Interneuron GIRK Signaling in the Regulation of Affect and Cognition in Male and Female Mice

open access: yesFrontiers in Behavioral Neuroscience, 2021
Pathological impairments in the regulation of affect (i.e., emotion) and flexible decision-making are commonly observed across numerous neuropsychiatric disorders and are thought to reflect dysfunction of cortical and subcortical circuits that arise in ...
Eden M. Anderson   +4 more
doaj   +1 more source

The role of inhibitory G proteins and regulators of G protein signaling in the in vivo control of heart rate and predisposition to cardiac arrhythmias [PDF]

open access: yes, 2012
Inhibitory heterotrimeric G proteins and the control of heart rate. The activation of cell signaling pathways involving inhibitory heterotrimeric G proteins acts to slow the heart rate via modulation of ion channels.
Ang, R, Opel, A, Tinker, A
core   +1 more source

Structural rearrangements underlying ligand-gating in Kir channels [PDF]

open access: yes, 2012
Inward rectifier potassium (Kir) channels are physiologically regulated by a wide range of ligands that all act on a common gate, although structural details of gating are unclear.
Enkvetchakul, Decha   +4 more
core   +3 more sources

Postsynaptic GABABRs Inhibit L-Type Calcium Channels and Abolish Long-Term Potentiation in Hippocampal Somatostatin Interneurons

open access: yesCell Reports, 2018
Summary: Inhibition provided by local GABAergic interneurons (INs) activates ionotropic GABAA and metabotropic GABAB receptors (GABABRs). Despite GABABRs representing a major source of inhibition, little is known of their function in distinct IN subtypes.
Sam A. Booker   +7 more
doaj   +1 more source

Pregnenolone sulfate potentiates the inwardly rectifying K channel Kir2.3. [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND:Neurosteroids have various physiological and neuropsychopharmacological effects. In addition to the genomic effects of steroids, some neurosteroids modulate several neurotransmitter receptors and channels, such as N-methyl-D-aspartate ...
Toru Kobayashi   +2 more
doaj   +1 more source

Atrial GIRK Channels Mediate the Effects of Vagus Nerve Stimulation on Heart Rate Dynamics and Arrhythmogenesis

open access: yesFrontiers in Physiology, 2018
Diminished parasympathetic influence is central to the pathogenesis of cardiovascular diseases, including heart failure and hypertension. Stimulation of the vagus nerve has shown promise in treating cardiovascular disease, prompting renewed interest in ...
Steven W. Lee   +5 more
doaj   +1 more source

The role of G proteins in assembly and function of Kir3 inwardly rectifying potassium channels [PDF]

open access: yesChannels, 2010
Kir3 channels (also known as GIRK channels) are important regulators of electrical excitability in both cardiomyocytes and neurons. Much is known regarding the assembly and function of these channels and the roles that their interacting proteins play in controlling these events.
Peter, Zylbergold   +2 more
openaire   +2 more sources

G-Protein-Coupled Inwardly Rectifying Potassium (GIRK) Channel Activation by the p75 Neurotrophin Receptor Is Required for Amyloid β Toxicity

open access: yesFrontiers in Neuroscience, 2017
Alzheimer's disease is characterized by cognitive decline, neuronal degeneration, and the accumulation of amyloid-beta (Aβ). Although, the neurotoxic Aβ peptide is widely believed to trigger neuronal dysfunction and degeneration in Alzheimer's disease ...
Linda M. May   +14 more
doaj   +1 more source

Action potentials in primary osteoblasts and in the MG-63 osteoblast-like cell line [PDF]

open access: yes, 2011
Whole-cell patch-clamp analysis revealed a resting membrane potential of −60 mV in primary osteoblasts and in the MG-63 osteoblast-like cells. Depolarization-induced action potentials were characterized by duration of 60 ms, a minimal peak-to-peak ...
Begandt, Daniela   +7 more
core   +2 more sources

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