Potassium voltage-gated channel subfamily A member 5 (KCNA5)

Voltage-gated potassium channel that mediates transmembrane potassium transfer in excitable membranes. Types tetrameric potassium-selective channels through which potassium ions pass in accordance with their electrochemical gradient.

The station alternates between opened and closed conformations in response to the voltage difference across the membrane. Can form operational homotetrameric channels and heterotetrameric channels which contain variable proportions of KCNA1, KCNA2, KCNA4, KCNA5, and possibly other family members too; station properties depend on the sort of alpha subunits which are part of the station (PubMed:12130714).