Troponin is a complex of proteins found in skeletal and cardiac muscle fibers that plays a crucial role in the regulation of muscle contraction. It works in conjunction with tropomyosin to control the interaction between actin and myosin, the primary proteins involved in muscle contraction. When calcium ions are released during muscle activation, they bind to troponin, causing a conformational change that allows myosin to interact with actin, leading to muscle contraction and movement.
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