Which molecules are involved with regulation of cross-bridge attachment activity?

Question

Quizplus · Accepted Answer

Calcium ions bind to troponin, causing a conformational change that moves tropomyosin out of the way, allowing cross-bridge attachment between actin and myosin. Therefore, calcium ions and troponin are directly involved in the regulation of cross-bridge attachment activity. Titin provides structural support for the sarcomere but does not directly regulate cross-bridge attachment. Calmodulin is not involved in skeletal muscle contraction, and tropomyosin is indirectly involved through its interaction with troponin.

Which Molecules Are Involved with Regulation of Cross-Bridge Attachment Activity