KV2.1 is a member of the voltage-gated K+ channel superfamily. Together with the closely related KV2.2 protein they form the KV2 subfamily also known as Shab.As with all KV channels, KV2.1 possesses the signature structure of the voltage-dependent K+ channels: six membrane-spanning domains with intracellular N and C termini. The functional KV channel is a tetramer that can either be a homotetramer or a heteromer of KV2.1 and KV2.2 subunits.
