The "myosin binding site" is present on:

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(A) In the structure of a thin filament (actin filament), the $F$-actin is composed of two helical strands of polymerized $G$-actin molecules.Each $G$

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Actin protein

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(A) In the structure of a thin filament (actin filament), the $F$-actin is composed of two helical strands of polymerized $G$-actin molecules.Each $G$-actin monomer has a specific binding site for the myosin head.In a resting state, these binding sites on the actin filaments are covered by the regulatory protein tropomyosin, which prevents the interaction between actin and myosin.Therefore, the myosin binding site is located on the actin protein.

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