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Troponin C is a protein which is part of the troponin complex. It contains four calcium-binding EF hands , although different isoforms may have fewer than four functional calcium-binding subdomains. It is a component of thin filaments , along with actin and tropomyosin .
Troponin, or the troponin complex, is a complex of three regulatory proteins (troponin C, troponin I, and troponin T) that are integral to muscle contraction [2] in skeletal muscle and cardiac muscle, but not smooth muscle.
Troponin C, also known as TN-C or TnC, is a protein that resides in the troponin complex on actin thin filaments of striated muscle (cardiac, fast-twitch skeletal, or slow-twitch skeletal) and is responsible for binding calcium to activate muscle contraction.
Troponin C, skeletal muscle is a protein that in humans is encoded by the TNNC2 gene. [ 5 ] [ 6 ] Troponin (Tn), is a key protein complex in the regulation of striated muscle contraction , composed of three subunits.
Troponin test: The most sensitive and specific test for myocardial damage. Because it has increased specificity compared with CK-MB, troponin is composed of 3 proteins- Troponin C, Cardic troponin I, and Cardiac troponin T. Troponin I especially has a high affinity for myocardial injury. 12 hours
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Mechanism of action of calcium sensitizers: increase sensitivity of troponin C to Ca2+ Calcium is a vital element for regulating the contraction and relaxation of the heart muscle. [6] Calcium sensitizers are medications that increase the responsiveness of heart muscle cells to calcium, enabling more forceful contractions while conserving ...
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