Population
Myosin molecules purified from scallop adductor muscles
Comparison
Presence of Ca2+ (with ATP or ADP) vs Absence of Ca2+
Design
Preclinical
Authors
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No immediate clinical implications; leaves open whether Ca2+-dependent myosin tail extension occurs in mammalian cardiac muscle.
Ca2+ induces a conformational change in scallop muscle myosin molecules, extending their folded tail parts at physiological ionic strength.
Takahashi et al. (1989) studied this question.
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