Demonstrates that steady streaming in a solution of Mg-ATP and heavy meromyosin occurs only in the presence of actomyosin-ATPase activity.
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Actomyosin-ATPase is required for sustained in vitro streaming; leaves open relevance to cardiac sarcomere mechanics.
Steady streaming of the solution was observed for more than one and a half hours in a circular slit between two concentric cylinders where rabbit skeletal F-actin was fixed on to the wall of the slit and heavy meromyosin was in the Mg-ATP solution in the slit. The streaming only appeared when the actomyosin-ATPase activity was present in the system.
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Masafumi Yano (1978) studied this question.
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