Biologically Active Substance
troponin Audio
tro·po·nin [ troh-puh-nin, trop-uh- ]
Subclass of:
Microfilament Proteins; Muscle Proteins
Definitions related to troponin:
  • Complex (T,I,C) which mediates actin-myosin contractile phenomena; troponin C, when saturated with calcium, permits myosin to displace tropomyosin from actin filaments.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • 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).
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • Proteins found in heart muscle that leak into the circulation during a heart attack or other heart injury.
    Harvard Dictionary of Health Terms
    Harvard Medical Publishing, 2011
  • Troponins are protein molecules that are part of cardiac and skeletal muscle. Smooth muscle cells do not contain troponins.
    Medscape
    WebMD, 2019
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.