voltage-gated potassium channel alpha subunit modulatory voltage-gated potassium channel subunit KCNG silent subunit fam:Kchan_sub-KCNG PR:000000701 Category=family. protein PIRSF:PIRSF500980 A voltage-gated potassium channel alpha subunit that is a modulator of the shab-related potassium channels (Kv2). Similarly to KCNF1, KCNV and KCNS subunits, KCNG subunits are not able to form functional channels on their own. Also in common with these modulatory subunits, it lacks the conserved PxP motif located in the distal part of S6. In this class the motif is PxT. The alteration of the PxP motif seems to be an important determinant of the regulatory function of modulatory subunits.