KCNMB4 (Calcium-activated Potassium Channel Subunit beta-4, BK Channel Subunit beta-4, BKbeta4, Hbeta4, Calcium-activated Potassium Channel, Subfamily M Subunit beta-4, Charybdotoxin Receptor Subunit beta-4, K(VCA)beta-4, Maxi K Channel Subunit beta-4, Sl