Troponin

**Definition:** One of the minor protein components of skeletal and cardiac muscles. It functions as the calcium-binding component in a complex with BETA-TROPOMYOSIN; ACTIN; and MYOSIN and confers calcium sensitivity to the cross-linked actin and myosin filaments. Troponin itself is a complex of three regulatory proteins (TROPONIN C; TROPONIN I; and TROPONIN T).

**Tree numbers:** - D05.500.945 - D05.750.078.730.825 - D12.776.210.500.910 - D12.776.220.525.825

**Synonyms:** - Troponins - Troponin Complex