KCND3 - potassium voltage-gated channel subfamily D member 3 Gene
Also Known as KV4.3; SCA19; SCA22; BRGDA9; KCND3L; KCND3S; KSHIVB
Species: Homo sapiens
About KCND3
This gene has 7 transcripts (splice variants), 263 orthologues, 31 paralogues and is associated with 5 phenotypes. Broad expression in brain (RPKM 4.9), prostate (RPKM 2.7) and 17 other tissues.
Summary
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]
KCND3 Products (4)
| mRNA | Protein | Name |
|---|---|---|
| NM_001378969.1 | NP_001365898.1 | potassium voltage-gated channel subfamily D member 3 isoform 1 precursor |
| NM_001378970.1 | NP_001365899.1 | potassium voltage-gated channel subfamily D member 3 isoform 2 precursor |
| NM_004980.5 | NP_004971.2 | potassium voltage-gated channel subfamily D member 3 isoform 1 precursor |
| NM_172198.3 | NP_751948.1 | potassium voltage-gated channel subfamily D member 3 isoform 2 precursor |
| Molecular Function GO Annotation | Evidence | References | Source |
|---|---|---|---|
| contributes to A-type (transient outward) potassium channel activity |
IDA
IDA: Inferred from direct assay
|
21349352 | GOA |
| enables A-type (transient outward) potassium channel activity |
IDA
IDA: Inferred from direct assay
|
9843794 | GOA |
| enables protein binding |
IPI
IPI: Inferred from physical interaction
|
14980207 | GOA |
| contributes to voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization |
IMP
IMP: Inferred from mutant phenotype
|
21349352 | GOA |
| Biological Process GO Annotation | Evidence | References | Source |
|---|---|---|---|
| involved in membrane repolarization |
IDA
IDA: Inferred from direct assay
|
21493962 | GOA |
| involved in potassium ion export across plasma membrane |
IDA
IDA: Inferred from direct assay
|
21349352 | GOA |
| involved in potassium ion transmembrane transport |
IDA
IDA: Inferred from direct assay
|
9843794 | GOA |
| involved in potassium ion transport |
IDA
IDA: Inferred from direct assay
|
14980207 | GOA |
| involved in protein tetramerization |
IDA
IDA: Inferred from direct assay
|
14980207 | GOA |
| involved in regulation of heart rate by cardiac conduction |
IMP
IMP: Inferred from mutant phenotype
|
21349352 | GOA |
| involved in ventricular cardiac muscle cell membrane repolarization |
IMP
IMP: Inferred from mutant phenotype
|
21349352 | GOA |
| Cellular Component GO Annotation | Evidence | References | Source |
|---|---|---|---|
| part of Kv4.3-KChIP1 channel complex |
IPI
IPI: Inferred from physical interaction
|
17187064 | GOA |
| located in plasma membrane |
IDA
IDA: Inferred from direct assay
|
23280837 | GOA |
| part of voltage-gated potassium channel complex |
IDA
IDA: Inferred from direct assay
|
21493962 | GOA |
KCND3 Protein Structure
Shal-type: Shal-type voltage-gated potassium channels, N-terminal (3 - 31)
BTB_2: BTB/POZ domain (42 - 131)
Ion_trans: Ion transport protein (228 - 402)
DUF3399: Domain of unknown function (DUF3399) (442 - 564)
- 0
- 200
- 400
- 600
- 655 a.a.
| Protein Preferred Names | Protein Names | |
|---|---|---|
|
potassium voltage-gated channel subfamily D member 3 |
|
Related Diseases
| Diseases | Alias | |
|---|---|---|
| Spinocerebellar Ataxia 19 |
|
|
| Brugada Syndrome 9 |
|
|
| Spinocerebellar Ataxia Type 19/22 |
|
|
| Hereditary Ataxia |
|
|
| Brugada Syndrome |
|
|
| Right Bundle Branch Block |
|
|
| Long Qt Syndrome |
|
|
| Spinocerebellar Ataxia 13 |
|
|
| Rheumatic Heart Disease |
|
|
| Cerebellar Ataxia Type 43 |
|
|
| Spinocerebellar Ataxia, Autosomal Recessive 4 |
|
|
| Episodic Ataxia, Type 1 |
|
|
| Cerebellar Ataxia Type 48 |
|
|
| Brugada Syndrome 5 |
|
|
| Short Qt Syndrome |
|
|
| Spastic Paraplegia 41, Autosomal Dominant |
|
|
| Episodic Ataxia |
|
|
| Spinocerebellar Ataxia, Autosomal Recessive 17 |
|
|
| Heart Disease |
|
|
| Long Qt Syndrome 2 |
|
|
| Brugada Syndrome 1 |
|
|
| Long Qt Syndrome 3 |
|
|
| Heart Conduction Disease |
|
|
| Long Qt Syndrome 1 |
|
|
| Catecholaminergic Polymorphic Ventricular Tachycardia |
|
|
| Autosomal Dominant Cerebellar Ataxia |
|
|
| Dystonia |
|
|
| Cerebellar Disease |
|
|
| Familial Atrial Fibrillation |
|
|
| Cardiomyopathy, Familial Hypertrophic, 1 |
|
|
| Amyotrophic Lateral Sclerosis 1 |
|
|
| Left Ventricular Noncompaction |
|
|
| Spastic Ataxia |
|
|
| Dilated Cardiomyopathy |
|
|
| Hypertrophic Cardiomyopathy |
|
|
Orthologs Information
| Species | Symbol | Source | ID |
|---|---|---|---|
| Rattus norvegicus | KCND3 | RGD | RGD:68394 |
| Canis familiaris | KCND3 | VGNC | VGNC:42240 |
| Macaca mulatta | KCND3 | VGNC | VGNC:106396 |
| Bos taurus | KCND3 | VGNC | VGNC:30436 |
| Mus musculus | KCND3 | MGD | MGI:1928743 |
| Felis catus | KCND3 | VGNC | VGNC:67902 |
| Others | KCND3 | NCBI |