Recombinant Human Potassium voltage-gated channel subfamily A member 5 (KCNA5), Truncated

Uniprot Id

P22460

Target Species

Human

Target Name

KCNA5

Target Full Name

Potassium voltage-gated channel subfamily A member 5

Target 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. May play a role in regulating the secretion of insulin in normal pancreatic islets. Isoform 2 exhibits a voltage-dependent recovery from inactivation and an excessive cumulative inactivation.

Target Involvement

Atrial fibrillation, familial, 7 (ATFB7)

Target Subcellular Location

Cell membrane; Multi-pass membrane protein.

Target Protein Families

Potassium channel family, A (Shaker) (TC 1.A.1.2) subfamily, Kv1.5/KCNA5 sub-subfamily

Target Tissue Specificity

Pancreatic islets and insulinoma.

Target Synonyms

KCNA5; Potassium voltage-gated channel subfamily A member 5; HPCN1; Voltage-gated potassium channel HK2; Voltage-gated potassium channel subunit Kv1.5