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

Attached to myosin filament

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Attached to tropomyosin

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Attached to myosin cross bridges

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Attached to T tubule

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Solution

The correct option is B Attached to tropomyosin
Each actin filament is made up of two F actins (polymer of G actin) that are helically wound to each other. Two filaments of a protein called tropomyosin run close to the F actins throughout its length. A protein called troponin is distributed at regular intervals on the tropomyosin.

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Involuntary muscle fibres lack this complex, required in the control of contraction of voluntary muscle fibres. Which of the following is this?

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