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The contractile regulatory proteins that mask and unmask active sites in the sarcomere are:

The contractile regulatory proteins that mask and unmask active sites in the sarcomere are:

Grade:12th pass

2 Answers

Pawan Prajapati
askIITians Faculty 60787 Points
2 years ago
Our expert is working on this class X maths answer. We will update the answer very soon.
Yash Patari
askIITians Faculty 2123 Points
2 years ago
Dear student
  • The contractile regulatory proteins that mask and unmask active sites in the sarcomere are troponin and tropomyosin. 
  • The two tropomyosin filaments run close to the actin filaments throughout its length.
  • The troponin units are distributed throughout the length of tropomyosin filaments and mask the active binding sites for myosin.
  • During muscle contraction, the increased calcium ion levels lead to their binding to a subunit of troponin and unmasking the active sites for myosin filaments.
thanks

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