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Regulation of mitochondrial potassium channels, mitochondrial large-conductance calcium-activated potassium channel (mitoBKCa, activation (+) or inhibition (−)), and ATP-sensitive potassium channel (mitoKATP, activation (+)) by H2S (gasotransmitter shown in the dotted box). Modulation of the activity of the mitoBKCa channel by H2S, inferred from regulation of its plasmalemmal counterpart, could result from multiple, unknown (?) mechanisms (bracket).
