In a skeletal muscle contraction, what must be moved to the grooves in the actin double helix to uncover the crossbridge binding site?

Question

Quizplus · Accepted Answer

Tropomyosin is the protein that blocks the myosin binding sites on actin molecules in a relaxed muscle. When calcium ions bind to troponin, it causes tropomyosin to move away from these binding sites, allowing myosin heads to attach to actin and initiate muscle contraction.

In a Skeletal Muscle Contraction, What Must Be Moved to the Grooves