KCNA5 — Potassium voltage-gated channel subfamily A member 5
KCNA5 belongs to a gene co-expression module in 2 of 28 SCUBA cell types. Each module groups genes that rise and fall together in that cell type; the genes it shares a module with are its closest co-expression partners there.
KCNA5's module in each cell type
| Cell type | Module | Shares the module with | |
|---|---|---|---|
| Fibroblasts | ICC niche interactaion Gut motility | ABCC9, ADGRF5, ANO1, CD36, CFHR1, ESAM, FHL5, HOPX +10 more | View in SCUBA |
| Smooth muscle cells | Vascular SMC Identity Contractility | ADIRF, ARPC1A, BCAM, CCDC3, CRIP1, EFHD1, GPRC5C, GPX3 +10 more | View in SCUBA |
About the gene
| Synonyms | HK2, HPCN1, Kv1.5 |
|---|---|
| Chromosome | 12: 5043879-5046788 |
| Predicted location | Membrane |
| Essential gene | No |
| Protein class | Disease related genes, FDA approved drug targets, Human disease related genes, Predicted membrane proteins, Transporters, Voltage-gated ion channels |
| Molecular function | Ion channel, Potassium channel, Voltage-gated channel |
| Biological process | Ion transport, Potassium transport, Transport |
Function
Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes. Forms tetrameric potassium- selective channels through which potassium ions pass in accordance with their electrochemical gradient. The channel alternates between opened and closed conformations in response to the voltage difference across the membrane. Can form functional homotetrameric channels and heterotetrameric channels that contain variable proportions of KCNA1, KCNA2, KCNA4, KCNA5, and possibly other family members as well; channel properties depend on the type of alpha subunits that are part of the channel. Channel properties are modulated by cytoplasmic beta subunits that regulate the subcellular location of the alpha subunits and promote rapid inactivation. Homotetrameric channels display rapid activation and slow inactivation. Required for normal electrical conduction including formation of the infranodal ventricular conduction system and normal action potential configuration, as a result of its interaction with XIRP2 (By similarity). May play a role in regulating the secretion of insulin in normal pancreatic islets. Exhibits a faster depolarization rate, reduced voltage-dependent recovery from inactivation and an excessive cumulative inactivation
Human Protein Atlas · Open Targets · UniProt
Gene annotation from the Human Protein Atlas and UniProt; see sources & licences.