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 attaches troponin to actin.
C. One subunit binds tropomyosin and helps position it on actin.
D. One subunit binds to potassium ions.


Ans: D. One subunit binds to potassium ions.

Anatomy & Physiology

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Anatomy & Physiology