Superprecipitation is a model for in vitro contraction superior to ATPase activity.

Abstract

We investigated which activity of myosin B (natural actomyosin), super-precipitation or ATPase, is better suited as a parameter for measuring in vitro contraction with emphasis on the response of myosin B to Sr2+. The Sr2+ concentration giving half-maximum (KSr2+) binding of Sr2+ to cardiac troponin was not different from that to skeletal troponin, whether… (More)

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