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troponin
[ troh-puh-nin, trop-uh- ]
noun
, Biochemistry.
- a protein of muscle tissue that binds calcium ions and is involved in contraction.
troponin
/ trō′pə-nĭn,trŏp′ə- /
- One of the proteins that make up the thin filaments of muscle tissue and that regulate muscle contraction and relaxation. Troponin occurs in three forms bound together in a complex. One of the three forms is a receptor of calcium ions that induces structural changes that allow the actin in the thin filaments to interact with myosin, causing contraction.
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Example Sentences
The doctors asked Fanone if he’d ever had heart problems, because his body was flooded with troponin, a chemical indicating cardiac distress.
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