PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ATP binding site
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Myosin binding site
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Actin binding site
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Electron binding site
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Detailed explanation-1: -Meromyosin is a monomeric protein present in myosin filament. The globular head of the meromyosin contains the actin-binding site. Hence, this is the correct answer.
Detailed explanation-2: -As we already mentioned that the head of meromyosin has two binding sites for ATP and active sites for actin. So, our first option is Troponin. Troponin is found on thin filament or on actin. It is a calcium-regulatory protein for the calcium regulation in muscle contraction.
Detailed explanation-3: -So, the correct answer is ‘Head part of meromyosin’.
Detailed explanation-4: -Myosin is a major component of thick filaments. They are composed of a head, neck, and tail domain. The head contains ATPase and has ATP binding sites and active sites for actin (actin binding sites).