Angiotensin receptors and α1B-adrenergic receptors regulate native IK(ACh) and phosphorylation-deficient GIRK4 (S418A) channels through different PKC isoforms

L Inderwiedenstraße, MC Kienitz - Pflügers Archiv-European Journal of …, 2024 - Springer
Signaling of G protein-activated inwardly rectifying K+ (GIRK) channels is an important
mechanism of the parasympathetic regulation of the heart rate and cardiac excitability. GIRK …

Cell type‐specific subunit composition of G protein‐gated potassium channels in the cerebellum

C Aguado, J Colón, F Ciruela… - Journal of …, 2008 - Wiley Online Library
G protein‐gated inwardly rectifying potassium (GIRK/Kir3) channels regulate cellular
excitability and neurotransmission. In this study, we used biochemical and morphological …

Gating kinetics of GIRK channels are mediated by cytoplasmic residues adjacent to transmembrane domains

R Sadja, E Reuveny - Channels, 2009 - Taylor & Francis
G-protein-coupled inwardly rectifying potassium channels (GIRK/Kir3. x) are involved in
neurotransmission-mediated reduction of excitability. The gating mechanism following G …

Quantitative analysis of mammalian GIRK2 channel regulation by G proteins, the signaling lipid PIP2 and Na+ in a reconstituted system

W Wang, MR Whorton, R MacKinnon - Elife, 2014 - elifesciences.org
GIRK channels control spike frequency in atrial pacemaker cells and inhibitory potentials in
neurons. By directly responding to G proteins, PIP2 and Na+, GIRK is under the control of …

Divergent regulation of GIRK1 and GIRK2 subunits of the neuronal G protein gated K+ channel by GαiGDP and Gβγ

M Rubinstein, S Peleg, S Berlin, D Brass… - The Journal of …, 2009 - Wiley Online Library
G protein activated K+ channels (GIRK, Kir3) are switched on by direct binding of Gβγ
following activation of Gi/o proteins via G protein‐coupled receptors (GPCRs). Although Gαi …

Two distinct aspects of coupling between Gαi protein and G protein-activated K+ channel (GIRK) revealed by fluorescently labeled Gαi3 protein subunits

S Berlin, VA Tsemakhovich, R Castel, T Ivanina… - Journal of biological …, 2011 - ASBMB
G protein-activated K+ channels (Kir3 or GIRK) are activated by direct interaction with Gβγ.
Gα is essential for specific signaling and regulates basal activity of GIRK (I basal) and …

Backbone resonance assignments for the cytoplasmic regions of G protein-activated inwardly rectifying potassium channel 1 (GIRK1)

M Yokogawa, T Muramatsu, K Takeuchi… - Biomolecular NMR …, 2009 - Springer
G protein-activated inwardly rectifying potassium channel (GIRK) plays crucial roles in
regulating heart rate and neuronal excitability in eukaryotic cells. A variety of ligands …

Molecular basis for the inhibition of G protein-coupled inward rectifier K+ channels by protein kinase C

J Mao, X Wang, F Chen, R Wang… - Proceedings of the …, 2004 - National Acad Sciences
G protein-coupled inward rectifier K+ (GIRK) channels regulate cellular excitability and
neurotransmission. The GIRK channels are activated by a number of inhibitory …

Gβγ binds directly to the G protein-gated K+ channel, IKACh

G Krapivinsky, L Krapivinsky, K Wickman… - Journal of Biological …, 1995 - ASBMB
The cardiac G protein-gated K+ channel, I KACh, is activated by application of purified and
recombinant β and γ subunits (Gβγ) of heterotrimeric G proteins to excised inside-out …

G protein-gated inwardly rectifying potassium channels are targets for volatile anesthetics

LG Weigl, W Schreibmayer - Molecular pharmacology, 2001 - ASPET
G protein-gated inwardly rectifying potassium channels (GIRKs) are a family of homo-and
hetero-oligomeric K+ channels composed of different subunits (GIRK1 to 4 in mammals) …