Targeting of potassium channels in cardiac arrhythmias

S Burg, B Attali - Trends in Pharmacological Sciences, 2021 - cell.com
Cardiomyocytes are endowed with a complex repertoire of ion channels, responsible for the
generation of action potentials (APs), travelling waves of electrical excitation, propagating …

Cardiac delayed rectifier potassium channels in health and disease

L Chen, KJ Sampson, RS Kass - Cardiac …, 2016 - cardiacep.theclinics.com
Cardiac action potentials are characterized by an initial depolarization followed by a
prolonged depolarization, or plateau phase, before a return to the resting potential. In these …

Mechanisms of KCNQ1 channel dysfunction in long QT syndrome involving voltage sensor domain mutations

H Huang, G Kuenze, JA Smith, KC Taylor… - Science …, 2018 - science.org
Mutations that induce loss of function (LOF) or dysfunction of the human KCNQ1 channel are
responsible for susceptibility to a life-threatening heart rhythm disorder, the congenital long …

Competition of calcified calmodulin N lobe and PIP2 to an LQT mutation site in Kv7.1 channel

WS Tobelaim, M Dvir, G Lebel, M Cui… - Proceedings of the …, 2017 - National Acad Sciences
Voltage-gated potassium 7.1 (Kv7. 1) channel and KCNE1 protein coassembly forms the
slow potassium current IKS that repolarizes the cardiac action potential. The physiological …

[HTML][HTML] Molecular pathogenesis of long QT syndrome type 1

J Wu, WG Ding, M Horie - Journal of arrhythmia, 2016 - Elsevier
Long QT syndrome type 1 (LQT1) is a subtype of a congenital cardiac syndrome caused by
mutation in the KCNQ1 gene, which encodes the α-subunit of the slow component of …

Pharmacological targeting of neuronal Kv7. 2/3 channels: a focus on chemotypes and receptor sites

F Miceli, MV Soldovieri, P Ambrosino… - Current medicinal …, 2018 - ingentaconnect.com
Background: The Kv7 (KCNQ) subfamily of voltage-gated potassium channels consists of 5
members (Kv7. 1-5) each showing characteristic tissue distribution and physiological roles …

Ubiquitylation‐dependent oligomerization regulates activity of Nedd4 ligases

I Attali, WS Tobelaim, A Persaud… - The EMBO …, 2017 - embopress.org
Ubiquitylation controls protein function and degradation. Therefore, ubiquitin ligases need to
be tightly controlled. We discovered an evolutionarily conserved allosteric restraint …

The membrane protein KCNQ1 potassium ion channel: Functional diversity and current structural insights

G Dixit, C Dabney-Smith, GA Lorigan - Biochimica et Biophysica Acta (BBA) …, 2020 - Elsevier
Background Ion channels play crucial roles in cellular biology, physiology, and
communication including sensory perception. Voltage-gated potassium (Kv) channels …

Ca2+-Calmodulin and PIP2 interactions at the proximal C-terminus of Kv7 channels

WS Tobelaim, M Dvir, G Lebel, M Cui, T Buki, A Peretz… - Channels, 2017 - Taylor & Francis
In the heart, co-assembly of Kv7. 1 with KCNE1 produces the slow IKS potassium current,
which repolarizes the cardiac action potential and mutations in human Kv7. 1 and KCNE1 …

The utility of zebrafish cardiac arrhythmia model to predict the pathogenicity of KCNQ1 variants

S Cui, K Hayashi, I Kobayashi, K Hosomichi… - Journal of Molecular and …, 2023 - Elsevier
Genetic testing for inherited arrhythmias and discriminating pathogenic or benign variants
from variants of unknown significance (VUS) is essential for gene-based medicine. KCNQ1 …