Gene: KCND3 (potassium voltage-gated channel subfamily D member 3) Homo sapiens
Symbol: KCND3
Name: potassium voltage-gated channel subfamily D member 3
Description: Voltage-gated potassium (Kv) 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, shal-related subfamily, members of which form voltage-activated A-type potassium ion channels and are prominent in the repolarization phase of the action potential. This member includes two isoforms with different sizes, which are encoded by alternatively spliced transcript variants of this gene. [provided by RefSeq, Jul 2008]
Type: protein-coding
RefSeq Status: REVIEWED
Also known as: BRGDA9; KCND3L; KCND3S; KSHIVB; KV4.3; MGC142035; MGC142037; OTTHUMP00000013771; OTTHUMP00000013772; potassium channel, voltage gated Shal related subfamily D, member 3; potassium ionic channel Kv4.3; potassium voltage-gated channel long; potassium voltage-gated channel, Shal-related subfamily, member 3; SCA19; SCA22; sha1-related potassium channel Kv4.3; spinocerebellar ataxia 19; spinocerebellar ataxia 22; voltage-gated K+ channel; voltage-gated potassium channel Kv4.3; voltage-gated potassium channel subunit Kv4.3
Allele / Splice: See ClinVar data
Latest Assembly: GRCh38 - Human Genome Assembly GRCh38
Human AssemblyChrPosition (strand)SourceGenome Browsers
GRCh381111,770,662 - 111,989,577 (-)NCBIGRCh38GRCh38hg38GRCh38
GRCh371112,318,444 - 112,532,147 (-)NCBIGRCh37GRCh37hg19GRCh37
Build 361112,119,977 - 112,333,300 (-)NCBINCBI36hg18NCBI36
Build 341112,030,495 - 112,243,819NCBI
Celera1110,565,074 - 110,778,378 (-)NCBI
Cytogenetic Map1p13.2NCBI
HuRef1110,189,856 - 110,403,378 (-)NCBIHuRef
CHM1_11112,433,439 - 112,646,758 (-)NCBICHM1_1
JBrowse: View Region in Genome Browser (JBrowse)

Disease Annotations
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Comparative Map Data
Position Markers
miRNA Target Status


Nucleotide Sequences
Protein Sequences
Clinical Variants

Additional Information

External Database Links
Nomenclature History
More on KCND3
Alliance Gene
Ensembl Gene
JBrowse: hg19 hg38
HGNC Report
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RGD Object Information
RGD ID: 68576
Created: 2001-07-11
Species: Homo sapiens
Last Modified: 2019-02-05
Status: ACTIVE