In rabbit skeletal actomyosin, the rate of inorganic phosphate release during ATP hydrolysis is 75 s-1 at 20°C, which is 25-fold faster than the rate-limiting cleavage step.
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Refines actomyosin ATPase kinetics in skeletal muscle; leaves open translation to human cardiac isoforms.
White et al. (1997) studied this question.
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