UniProt Summary: 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 (PubMed:2347305, PubMed:14575698). The channel alternates between opened and closed conformations in response to the voltage difference across the membrane (PubMed:2347305, PubMed:14575698). Can form functional homotetrameric channels and heterotetrameric channels that contain variable proportions of KCNA1, KCNA2, KCNA4, KCNA6, and possibly other family members as well; channel properties depend on the type of alpha subunits that are part of the channel (By similarity). Channel properties are modulated by cytoplasmic beta subunits that regulate the subcellular location of the alpha subunits and promote rapid inactivation (By similarity). Homotetrameric channels display rapid activation and slow inactivation (PubMed:2347305). {ECO:0000250|UniProtKB:P17659, ECO:0000269|PubMed:14575698, ECO:0000269|PubMed:2347305}.
Pfam DomainsGO Terms
Pfam Domains
Ion trans 2
K tetra
Ion trans
GO Terms
potassium channel complex
delayed rectifier potassium channel activity
axon terminus
voltage-gated potassium channel activity
voltage-gated potassium channel complex
potassium ion transmembrane transport
potassium ion transport
protein homooligomerization
monovalent inorganic cation transport
regulation of ion transmembrane transport
protein complex oligomerization
inorganic cation transmembrane transport
regulation of transmembrane transport
cation transmembrane transport
metal ion transport
inorganic ion transmembrane transport
regulation of ion transport
cation transport
ion transmembrane transport
transmembrane transport
ion transport
integral component of plasma membrane
protein-containing complex assembly
protein-containing complex subunit organization
regulation of transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)