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NEETZoologyLocomotion and Movement

What is the main function of the light meromyosin (LMM) component?

Options

  1. ATo run close to the F actins
  2. BTo act as an ATPase enzyme
  3. CTo mask the active binding sites
  4. DTo provide structural support

Correct answer

D. To provide structural support

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 cross arm in the HMM component refers to the head and short arm projecting outwards

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