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Question
In the thin filament of skeletal muscle fibre, a small globular protein, that masks the active sites on the F-actin is
In the thin filament of skeletal muscle fibre, a small globular protein, that masks the active sites on the F-actin is
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Solution
The correct option is D Troponin
The sarcoplasm has thick and thin filaments. The thin filaments consist of actins and the thick filaments consist of myosin. Both actin and myosin are contractile proteins. The thin filaments also contain the contractile protein, called tropomyosin. It is a rod-shaped fibrous protein: the rods are linked end to end, to form two helical strands, which are wrapped around the F-actin. An additional small globular protein molecule, called troponin, masks the active sites on the F-actin.
Hence the correct option is D.
The sarcoplasm has thick and thin filaments. The thin filaments consist of actins and the thick filaments consist of myosin. Both actin and myosin are contractile proteins. The thin filaments also contain the contractile protein, called tropomyosin. It is a rod-shaped fibrous protein: the rods are linked end to end, to form two helical strands, which are wrapped around the F-actin. An additional small globular protein molecule, called troponin, masks the active sites on the F-actin.
Hence the correct option is D.
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