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What is the role of the globular head in the heavy meromyosin (HMM) component?

Options

  1. AIt acts as a binding site for ADP
  2. BIt acts as a masking agent
  3. CIt acts as an ATPase enzyme
  4. DIt runs close to the F actins

Correct answer

C. It acts as an ATPase enzyme

Step-by-step solution

Each "F" actin is a polymer of monomeric "G" (Globular) actinsTwo filaments of another protein, tropomyosin also run close to the "F" actins throughout its length.In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.The thick filament in a myofibril is made up of many monomeric proteins called Meromyosins.The HMM component consists of the head and short arm of a meromyosin. The thick filament in a myofibril is made up of many monomeric proteins called Meromyosi

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