Dictionary > Troponin

Troponin

Definition
noun, plural: troponins
A regulatory protein that is a complex of three polypeptides (i.e. troponin c, troponin i, and troponin t). It has an affinity for calcium ions and is associated with tropomyosin. Together with tropomyosin, it regulates actinmyosin interactions in skeletal and cardiac muscle contraction.
Supplement
Troponin is made up of three regulatory proteins:

Word origin: From tropomyosin. Coined by the Japanese researchers Setsuro Ebashi and Ayako Kodama in 1966.
See also: tropomyosin


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