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Troponin, a major protein in thin filaments, is a globular protein with three polypeptide subunits. Which of the following is NOT a function of the troponin? A) One subunit binds to calcium ions. B) One subunit binds tropomyosin and helps position it on actin. C) One subunit binds to potassium ions. D) One subunit attaches troponin to actin.

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onderozbasak

Answer:

The correct answer is C.

Explanation:

Troponin have 3 subunits called Troponin C, Troponin T and Troponin I:

Troponin C is responsible for binding calcium ions. C might be a reference to calcium.

Troponin T is responsible for binding tropomysoin. T might be a reference to tropomysoin.

Troponin I is respobsible for binding actin.

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