| ID | Sequence | Length | GC content |
|---|---|---|---|
| AGAAAAAUCAAUUCAGAUUACUUUGAUGACAGUGACUUCCAGUCUUCUC… | 3242 nt | 0.3970 | |
| AGUUCCAACUGUUGUGCUGCAGCAGAUUUGGUCUGAGUCUGGGCAGAGC… | 3995 nt | 0.4370 | |
| AUGCACAGGCCUGGGCAGGGACACACAACCAACAGCUCUGUCGGGAACU… | 3835 nt | 0.3911 | |
| AAUUCACUGGCGUGUUCCGCGGCAUAAGCACCCCCUCUCUGCCUUCCCC… | 4518 nt | 0.4312 | |
| AGUGACUUCCAGUCUUCUCUGAAAGAUCUCCACGAUGCUGGCAGCCCGG… | 3152 nt | 0.4074 |
Potassium channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. Four sequence-related potassium channel genes - shaker, shaw, shab, and shal - have been identified in Drosophila, and each has been shown to have human homolog(s). This gene encodes a member of the potassium channel, voltage-gated, shaker-related subfamily. This member includes distinct isoforms which are encoded by alternatively spliced transcript variants of this gene. Some of these isoforms are beta subunits, which form heteromultimeric complexes with alpha subunits and modulate the activity of the pore-forming alpha subunits. [provided by RefSeq, Apr 2015]
A study in mice demonstrated that selection for ethanol preference significantly altered gene expression networks in the nucleus accumbens shell, with the KCNAB1 identified as part of a group of differentially variable genes associated with signaling receptor activity [Colville et al. DOI:10.1111/Gbb.12367]. In human myocardium, transcriptomic profiling at sudden death revealed the KCNAB1 was up-regulated in female arrhythmic deaths compared to males, indicating sex-specific ion-channel dysregulation as part of the acute vulnerable substrate for fatal arrhythmias [Caudal et al. DOI:10.1016/j.jacep.2024.08.013].