Question

Calcium is necessary to initiate muscle contraction. Which of the following molecules binds calcium?A. tropomyosinB. troponinC. actinD. myosin

Answer 1

b. troponin

Step-by-step explanation:

Troponin is a globular protein present in striated muscle, cardiac muscle and skeletal muscle.

This protein is constituted by troponins T, I and C

The subunit C (Tn C) is the one that is responsible for binding Ca2 + calcium ions (each mole of protein binds two mole of Ca2 +).