... calcium-activated K+ channel, large-conductance Ca2+and voltage-regulated K+ channel, hyperpolarizationactivated cyclic nucleotide gated channel, ether-a-go-go and cyclic nucleotide-gated channel ... sites at the cytosolic face of KAT1 (B) Changes in the current amplitudes of the different KAT1 mutants after PMA application The characteristics of WT KAT1 in the presence and absence of PMA are ... a PKC homolog, which can be detected with the PKC antibody in Brassica juncea, is activated by PMA and inhibited by the general kinase inhibitor H-7 and the PKC-speci c inhibitor staurosporine...