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- Table of Contents
Facts about Voltage-gated potassium channel subunit beta-1.
Promotes expression of the pore-forming alpha subunits in the cell membrane, and thereby increases channel activity (By similarity). Mediates closure of delayed rectifier potassium channels by physically obstructing the pore via its N-terminal domain name and increases the speed of channel closure for other family members (PubMed:9763623).
Human | |
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Gene Name: | KCNAB1 |
Uniprot: | Q14722 |
Entrez: | 7881 |
Belongs to: |
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shaker potassium channel beta subunit family |
AKR6A3; hKvb3; hKvBeta3; K(+) channel subunit beta-1; KCNA1Bpotassium channel beta 3 chain; Kvb1.3; KV-BETA-1; potassium channel beta3 subunit; potassium channel shaker chain beta 1a; potassium voltage-gated channel beta subunit; potassium voltage-gated channel, shaker-related subfamily, beta member 1; voltage-gated potassium channel beta-1 subunit; voltage-gated potassium channel subunit beta-1
Mass (kDA):
46.563 kDA
Human | |
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Location: | 3q25.31 |
Sequence: | 3; NC_000003.12 (156118216..156542648) |
In brain, expression is most prominent in caudate nucleus, hippocampus and thalamus. Significant expression also detected in amygdala and subthalamic nucleus. Also expressed in both healthy and cardiomyopathic heart. Up to four times more abundant in left ventricle than left atrium.
Cytoplasm. Membrane; Peripheral membrane protein; Cytoplasmic side. Cell membrane; Peripheral membrane protein; Cytoplasmic side. Recruited to the cytoplasmic side of the cell membrane via its interaction with pore-forming potassium channel alpha subunits.
PMID: 7499366 by England S.K., et al. A novel K+ channel beta-subunit (hKv beta 1.3) is produced via alternative mRNA splicing.
PMID: 7890032 by Majumder K., et al. Molecular cloning and functional expression of a novel potassium channel beta-subunit from human atrium.