Effects of myosin light-chain kinase inhibitor on catecholamine secretion from rat pheochromocytoma PC12h cells
Review articleOpen access

AbstractRelease of dopamine from rat pheochromocytoma PC12h cells by high K+ (50 mM) was inhibited by a specific inhibitor of myosin light-chain kinase (ML-9) dose-dependently. The myosin light-chain kinase inhibitor also specifically inhibited the phosphorylation of a 20 KDa protein by myosin light-chain kinase. Myosin light chain kinase may play a stimulatory role in the release reaction of catecholamines from the rat pheochromocytoma cells.

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