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KCNQ1

Soluble T Cell Receptor Products Formats

Anti-KCNQ1 Recombinant Antibody Products

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For Research Use Only. Not For Clinical Use.


This gene encodes a voltage-gated potassium channel required for repolarization phase of the cardiac action potential. This protein can form heteromultimers with two other potassium channel proteins, KCNE1 and KCNE3. Mutations in this gene are associated with hereditary long QT syndrome 1 (also known as Romano-Ward syndrome), Jervell and Lange-Nielsen syndrome, and familial atrial fibrillation. This gene exhibits tissue-specific imprinting, with preferential expression from the maternal allele in some tissues, and biallelic expression in others. This gene is located in a region of chromosome 11 amongst other imprinted genes that are associated with Beckwith-Wiedemann syndrome (BWS), and itself has been shown to be disrupted by chromosomal rearrangements in patients with BWS. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Aug 2011]
Protein class

Disease related genes, FDA approved drug targets, Human disease related genes, Plasma proteins, Transporters, Voltage-gated ion channels

Predicted location

Intracellular, Membrane (different isoforms)

Single cell type specificity

Cell type enhanced (Microglial cells, Undifferentiated cells, Granulosa cells)

Immune cell specificity

Low immune cell specificity

Cell line specificity

Cell line enhanced (HMC-1, OE19, RPMI-8226, U-266/70, U-937)

Interaction

Tetramer (PubMed:18165683, PubMed:19693805, PubMed:25441029). Heterotetramer with KCNE1; targets to the membrane raft (PubMed:25037568, PubMed:19693805, PubMed:20533308). Interacts (via C-terminus) with CALM; forms a heterooctameric structure (with 4:4 KCNQ1:CALM stoichiometry) in a calcium-independent manner (PubMed:18165683, PubMed:25441029). Interacts with AKAP9; targets protein kinase A (PKA) catalytic and regulatory subunits and protein phosphatase 1 (PP1) to the KCNQ1-KCNE1 complex, allowing PKA-mediated phosphorylation and increase of delayed rectifier potassium channel activity (PubMed:11799244, PubMed:25037568). Interacts with KCNE2; forms a heterooligomer complex that targets to the membrane raft and leading to currents with an apparently instantaneous activation, a rapid deactivation process and a linear current-voltage relationship and decreases the amplitude of the outward current (PubMed:11101505, PubMed:20533308). Interacts with AP2M1; mediates estrogen-induced internalization via clathrin-coated vesicles (PubMed:23529131). Interacts with NEDD4L; promotes internalization and decreases I(Ks) currents (PubMed:23529131, PubMed:22024150). Interacts with USP2; counteracts the NEDD4L-specific down-regulation of I(Ks) and restore plasma membrane localization (PubMed:22024150). Heterotetramer with KCNQ5; has a voltage-gated potassium channel activity (PubMed:24855057). Interacts with KCNE3; alters membrane raft localization (PubMed:20533308). Interacts with KCNE4; impairs KCNQ1 localization in lipid rafts and inhibits voltage-gated potassium channel activity (PubMed:19687231, PubMed:20533308). Interacts with KCNE5; impairs KCNQ1 localization in lipid rafts and only conducts current upon strong and continued depolarization (PubMed:20533308, PubMed:12324418).

Molecular function

Calmodulin-binding, Ion channel, Potassium channel, Voltage-gated channel

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