MUSCLE NERVE CARTILAGE BONE
SKELETAL MUSCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the name of the protein that covers the binding sites on actin?
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Myosin
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Tropoblasts
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Titan
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Tropomyosin
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Explanation:
Detailed explanation-1: -Tropomyosin is a fibrous protein that binds lengthwise along the groove of actin filaments . In striated muscle, each tropomyosin molecule is bound to troponin, which is a complex of three polypeptides: troponin C (Ca2+-binding), troponin I (inhibitory), and troponin T (tropomyosin-binding).
Detailed explanation-2: -The protein complex troponin binds to tropomyosin, helping to position it on the actin molecule.
Detailed explanation-3: -Final answer: In the resting muscle fiber, tropomyosin partially covers Myosin-binding sites on actin.
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