A membrane-associated phosphoswitch in Rad controls adrenergic regulation of cardiac calcium channels.
J Clin Invest.
2024 Jan 16;134(5). doi: 10.1172/JCI176943. PubMed PMID:
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Epilepsy in a mouse model of GNB1 encephalopathy arises from altered potassium (GIRK) channel signaling and is alleviated by a GIRK inhibitor.
Front Cell Neurosci.
2023;17:1175895. doi: 10.3389/fncel.2023.1175895. eCollection 2023. PubMed PMID:
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A novel small-molecule selective activator of homomeric GIRK4 channels.
J Biol Chem.
2022 Jun;298(6):102009. doi: 10.1016/j.jbc.2022.102009. Epub 2022 May 4. PubMed PMID:
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A selectivity filter mutation provides insights into gating regulation of a K(+) channel.
Commun Biol.
2022 Apr 11;5(1):345. doi: 10.1038/s42003-022-03303-1. PubMed PMID:
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A revised mechanism of action of hyperaldosteronism-linked mutations in cytosolic domains of GIRK4 (KCNJ5).
J Physiol.
2022 Mar;600(6):1419-1437. doi: 10.1113/JP282690. Epub 2022 Jan 17. PubMed PMID:
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Encephalopathy-causing mutations in Gβ(1) (GNB1) alter regulation of neuronal GIRK channels.
iScience.
2021 Sep 24;24(9):103018. doi: 10.1016/j.isci.2021.103018. eCollection 2021 Sep 24. PubMed PMID:
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Reconstitution of β-adrenergic regulation of Ca(V)1.2: Rad-dependent and Rad-independent protein kinase A mechanisms.
Proc Natl Acad Sci U S A.
2021 May 25;118(21). doi: 10.1073/pnas.2100021118. PubMed PMID:
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A Collision Coupling Model Governs the Activation of Neuronal GIRK1/2 Channels by Muscarinic-2 Receptors.
Front Pharmacol.
2020;11:1216. doi: 10.3389/fphar.2020.01216. eCollection 2020. PubMed PMID:
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Andersen-Tawil Syndrome Is Associated With Impaired PIP(2) Regulation of the Potassium Channel Kir2.1.
Front Pharmacol.
2020;11:672. doi: 10.3389/fphar.2020.00672. eCollection 2020. PubMed PMID:
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Mutual action by Gγ and Gβ for optimal activation of GIRK channels in a channel subunit-specific manner.
Sci Rep.
2019 Jan 24;9(1):508. doi: 10.1038/s41598-018-36833-y. PubMed PMID:
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Protein kinase C enhances plasma membrane expression of cardiac L-type calcium channel, Ca(V)1.2.
Channels (Austin).
2017 Nov 2;11(6):604-615. doi: 10.1080/19336950.2017.1369636. Epub 2017 Sep 21. PubMed PMID:
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Lithium reduces the span of G protein-activated K(+) (GIRK) channel inhibition in hippocampal neurons.
Bipolar Disord.
2017 Nov;19(7):568-574. doi: 10.1111/bdi.12536. Epub 2017 Sep 12. PubMed PMID:
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Collision coupling in the GABA(B) receptor-G protein-GIRK signaling cascade.
FEBS Lett.
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Protein kinase A regulates C-terminally truncated Ca(V) 1.2 in Xenopus oocytes: roles of N- and C-termini of the α(1C) subunit.
J Physiol.
2017 May 15;595(10):3181-3202. doi: 10.1113/JP274015. Epub 2017 Mar 23. PubMed PMID:
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Interactions between N and C termini of α1C subunit regulate inactivation of CaV1.2 L-type Ca(2+) channel.
Channels (Austin).
2016;10(1):55-68. doi: 10.1080/19336950.2015.1108499. PubMed PMID:
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A Quantitative Model of the GIRK1/2 Channel Reveals That Its Basal and Evoked Activities Are Controlled by Unequal Stoichiometry of Gα and Gβγ.
PLoS Comput Biol.
2015 Nov;11(11):e1004598. doi: 10.1371/journal.pcbi.1004598. eCollection 2015 Nov. PubMed PMID:
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The Roles of Gβγ and Gα in Gating and Regulation of GIRK Channels.
Int Rev Neurobiol.
2015;123:27-85. doi: 10.1016/bs.irn.2015.06.001. Epub 2015 Jul 26. Review. PubMed PMID:
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Molecular Aspects of Modulation of L-type Calcium Channels by Protein Kinase C.
Curr Mol Pharmacol.
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Recruitment of Gβγ controls the basal activity of G-protein coupled inwardly rectifying potassium (GIRK) channels: crucial role of distal C terminus of GIRK1.
J Physiol.
2014 Dec 15;592(24):5373-90. doi: 10.1113/jphysiol.2014.283218. Epub 2014 Nov 10. PubMed PMID:
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Conserved charged residues at the surface and interface of epithelial sodium channel subunits--roles in cell surface expression and the sodium self-inhibition response.
FEBS J.
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Dual regulation of G proteins and the G-protein-activated K+ channels by lithium.
Proc Natl Acad Sci U S A.
2014 Apr 1;111(13):5018-23. doi: 10.1073/pnas.1316425111. Epub 2014 Mar 17. PubMed PMID:
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Regulation of cardiac L-type Ca²⁺ channel CaV1.2 via the β-adrenergic-cAMP-protein kinase A pathway: old dogmas, advances, and new uncertainties.
Circ Res.
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Competitive and non-competitive regulation of calcium-dependent inactivation in CaV1.2 L-type Ca2+ channels by calmodulin and Ca2+-binding protein 1.
J Biol Chem.
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SK4 Ca2+ activated K+ channel is a critical player in cardiac pacemaker derived from human embryonic stem cells.
Proc Natl Acad Sci U S A.
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Molecular basis of the facilitation of the heterooligomeric GIRK1/GIRK4 complex by cAMP dependent protein kinase.
Biochim Biophys Acta.
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Early infantile epileptic encephalopathy associated with a high voltage gated calcium channelopathy.
J Med Genet.
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Modulation of distinct isoforms of L-type calcium channels by G(q)-coupled receptors in Xenopus oocytes: antagonistic effects of Gβγ and protein kinase C.
Channels (Austin).
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Ca(V)1.2 I-II linker structure and Timothy syndrome.
Channels (Austin).
2012 Nov-Dec;6(6):468-72. doi: 10.4161/chan.22078. Epub 2012 Sep 18. PubMed PMID:
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The role of a voltage-dependent Ca2+ channel intracellular linker: a structure-function analysis.
J Neurosci.
2012 May 30;32(22):7602-13. doi: 10.1523/JNEUROSCI.5727-11.2012. PubMed PMID:
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Ahnak1 interaction is affected by phosphorylation of Ser-296 on Cavβ₂.
Biochem Biophys Res Commun.
2012 May 4;421(2):184-9. doi: 10.1016/j.bbrc.2012.03.132. Epub 2012 Apr 4. PubMed PMID:
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Two distinct aspects of coupling between Gα(i) protein and G protein-activated K+ channel (GIRK) revealed by fluorescently labeled Gα(i3) protein subunits.
J Biol Chem.
2011 Sep 23;286(38):33223-35. doi: 10.1074/jbc.M111.271056. Epub 2011 Jul 27. PubMed PMID:
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CaBP1 regulates voltage-dependent inactivation and activation of Ca(V)1.2 (L-type) calcium channels.
J Biol Chem.
2011 Apr 22;286(16):13945-53. doi: 10.1074/jbc.M110.198424. Epub 2011 Mar 7. PubMed PMID:
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Identification of the roles of conserved charged residues in the extracellular domain of an epithelial sodium channel (ENaC) subunit by alanine mutagenesis.
Am J Physiol Renal Physiol.
2011 Apr;300(4):F887-97. doi: 10.1152/ajprenal.00648.2010. Epub 2011 Jan 5. PubMed PMID:
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A novel mutation in the HCN4 gene causes symptomatic sinus bradycardia in Moroccan Jews.
J Cardiovasc Electrophysiol.
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Further characterization of regulation of Ca(V)2.2 by stargazin.
Channels (Austin).
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Stargazin modulates neuronal voltage-dependent Ca(2+) channel Ca(v)2.2 by a Gbetagamma-dependent mechanism.
J Biol Chem.
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Truncated beta epithelial sodium channel (ENaC) subunits responsible for multi-system pseudohypoaldosteronism support partial activity of ENaC.
J Steroid Biochem Mol Biol.
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G alpha(i) and G betagamma jointly regulate the conformations of a G betagamma effector, the neuronal G protein-activated K+ channel (GIRK).
J Biol Chem.
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Anion-sensitive regions of L-type CaV1.2 calcium channels expressed in HEK293 cells.
PLoS One.
2010 Jan 6;5(1):e8602. doi: 10.1371/journal.pone.0008602. PubMed PMID:
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N terminus of type 5 adenylyl cyclase scaffolds Gs heterotrimer.
Mol Pharmacol.
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Characterization of the calmodulin-binding site in the N terminus of CaV1.2.
Channels (Austin).
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Divergent regulation of GIRK1 and GIRK2 subunits of the neuronal G protein gated K+ channel by GalphaiGDP and Gbetagamma.
J Physiol.
2009 Jul 15;587(Pt 14):3473-91. doi: 10.1113/jphysiol.2009.173229. Epub 2009 May 26. PubMed PMID:
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Amplitude histogram-based method of analysis of patch clamp recordings that involve extreme changes in channel activity levels.
J Mol Neurosci.
2009 Mar;37(3):201-11. doi: 10.1007/s12031-008-9117-z. Epub 2008 Jul 12. PubMed PMID:
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Renin-aldosterone response, urinary Na/K ratio and growth in pseudohypoaldosteronism patients with mutations in epithelial sodium channel (ENaC) subunit genes.
J Steroid Biochem Mol Biol.
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Molecular mechanisms that control initiation and termination of physiological depolarization-evoked transmitter release.
Proc Natl Acad Sci U S A.
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An inactivation gate in the selectivity filter of KCNQ1 potassium channels.
Biophys J.
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Point mutation in the HCN4 cardiac ion channel pore affecting synthesis, trafficking, and functional expression is associated with familial asymptomatic sinus bradycardia.
Circulation.
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Galphai3 primes the G protein-activated K+ channels for activation by coexpressed Gbetagamma in intact Xenopus oocytes.
J Physiol.
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Movement of 'gating charge' is coupled to ligand binding in a G-protein-coupled receptor.
Nature.
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Regulation of maximal open probability is a separable function of Ca(v)beta subunit in L-type Ca2+ channel, dependent on NH2 terminus of alpha1C (Ca(v)1.2alpha).
J Gen Physiol.
2006 Jul;128(1):15-36. doi: 10.1085/jgp.200609485. PubMed PMID:
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