Results 11 to 20 of about 11,215 (198)

Ras-association domain of sorting Nexin 27 is critical for regulating expression of GIRK potassium channels. [PDF]

open access: yesPLoS ONE, 2013
G protein-gated inwardly rectifying potassium (GIRK) channels play an important role in regulating neuronal excitability. Sorting nexin 27b (SNX27b), which reduces surface expression of GIRK channels through a PDZ domain interaction, contains a putative ...
Bartosz Balana   +7 more
doaj   +1 more source

Perisynaptic astrocytes as a potential target for novel antidepressant drugs

open access: yesJournal of Pharmacological Sciences, 2021
Emerging evidence suggests that dysfunctions in glutamatergic signaling are associated with the pathophysiology of depression. Several molecules that act on glutamate binding sites, so-called glutamatergic modulators, are rapid-acting antidepressants ...
Marcos E. Frizzo, Yukihiro Ohno
doaj   +1 more source

Pharmacological Characterization of 5-HT1A Autoreceptor-Coupled GIRK Channels in Rat Dorsal Raphe 5-HT Neurons.

open access: yesPLoS ONE, 2015
G protein-activated inwardly rectifying potassium (GIRK) channels in 5-HT neurons are assumed to be principal effectors of 5-hydroxytryptamine 1A (5-HT1A) autoreceptors, but their pharmacology, subunit composition and the role in regulation of 5-HT ...
Alberto Montalbano   +2 more
doaj   +1 more source

Polyamine Block of Inwardly Rectifying Potassium Channels [PDF]

open access: yes, 2011
Polyamine blockade of inwardly rectifying potassium (Kir) channels underlies their steep voltage--dependence observed in native cells. The structural determinants of polyamine blockade and the structure-activity profile of endogenous polyamines requires specialized methodology for characterizing polyamine interactions with Kir channels.
Harley T, Kurata   +2 more
openaire   +2 more sources

Involvement of spinal G-protein inwardly rectifying potassium (GIRK) channels in the enhanced antinociceptive effects of the activation of both μ-opioid and cannabinoid CB1 receptors

open access: yesJournal of Pharmacological Sciences, 2022
Neuropathic pain is refractory to opioid analgesics. Since there are functional linkages between μ-opioid receptors (MOR) and cannabinoid receptors (CBR), the present study was designed to investigate the interactions between MOR and CB1R based on ...
Yoshinori Takemura   +6 more
doaj   +1 more source

INWARD RECTIFIERS AND THEIR REGULATION BY ENDOGENOUS POLYAMINES

open access: yesFrontiers in Physiology, 2014
Inwardly-rectifying potassium (Kir) channels contribute to maintenance of the resting membrane potential and regulation of electrical excitation in many cell types.
Victoria A Baronas   +1 more
doaj   +1 more source

Structural insights into GIRK2 channel modulation by cholesterol and PIP2

open access: yesCell Reports, 2021
Summary: G-protein-gated inwardly rectifying potassium (GIRK) channels are important for determining neuronal excitability. In addition to G proteins, GIRK channels are potentiated by membrane cholesterol, which is elevated in the brains of people with ...
Yamuna Kalyani Mathiharan   +5 more
doaj   +1 more source

Alcohol modulation of G-protein-gated inwardly rectifying potassium channels: from binding to therapeutics

open access: yesFrontiers in Physiology, 2014
Alcohol (ethanol)-induced behaviors arise from direct interaction of alcohol with discrete protein cavities within brain proteins. Recent structural and biochemical studies have provided new insights into the mechanism of alcohol-dependent activation of ...
Karthik eBodhinathan, Paul A Slesinger
doaj   +1 more source

Structural mechanism underlying G protein family-specific regulation of G protein-gated inwardly rectifying potassium channel

open access: yesNature Communications, 2019
Opening of G protein-gated inwardly rectifying potassium channels (GIRK) is coupled to the activation of a GPCR. Here the authors use NMR and cell-based BRET assays to gain insights into the mechanisms underlying family-specific activation and find that ...
Hanaho Kano   +7 more
doaj   +1 more source

Why do platelets express K+ channels?

open access: yesPlatelets, 2021
Potassium ions have widespread roles in cellular homeostasis and activation as a consequence of their large outward concentration gradient across the surface membrane and ability to rapidly move through K+-selective ion channels.
Joy R Wright, Martyn P. Mahaut-Smith
doaj   +1 more source

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