How many types of large conductance Ca+2-activated potassium channels exist in brain mitochondrial inner membrane: evidence for a new mitochondrial large conductance Ca2+-activated potassium channel in brain mitochondria

▶Brain mitochondrial inner membrane has, at least, two different BK channels. ▶The new channel has higher conductance and Po appeared less voltage-dependent. ▶The channel is sensitive to iberiotoxin, charybdotoxin, and ATP but not to glibenclamide.