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Question

What is the location of troponin in the process of muscle contraction?

A
Attached to myosin filament
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B
Attached to tropomyosin
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C
Attached to myosin cross bridge
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D
Attached to T-tubule
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Solution

The correct option is B Attached to tropomyosin
The proteins troponin and tropomyosin are closely associated with actin. Troponin is a complex of three polypeptide chains-TnC,TnI and TnT.TnC binds to CA2+,TnI binds to actin and TnT binds to tropomyosin.

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