Potassium voltage-gated channel subfamily E member 2 (KCNE2)

Ancillary protein that assembles as a beta subunit with a voltage-gated potassium channel complex of pore-forming alpha subunits. Modulates the gating kinetics and enhances stability of the station complex.

Assembled with KCNB1 modulates the gating characteristics of the delayed rectifier voltage-dependent potassium channel KCNB1. Associated with KCNH2/HERG is suggested to form the rapidly activating component of the delayed rectifying potassium current in heart (IKr).