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Locomotion And Movement

Question

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Briefly describe the structure of meromyosin.

Solution

Meromyosin is made up of two parts
i. A globular head with a short arm - It is called the heavy meromyosin (HMM). The head and short arm projects outwards at regular distance and angle from each other from the surface of a polymerised myosin filament and is known as cross arm. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.
ii A tail. is the light meromyosin (LMM).

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