Definition of tropomyosin in English:

tropomyosin

Syllabification: trop·o·my·o·sin
Pronunciation: /ˌträpōˈmīəsən, ˌtrō-
 
/

noun

Biochemistry
  • A protein involved in muscle contraction. It is related to myosin and occurs together with troponin in the thin filaments of muscle tissue.
    More example sentences
    • The addition of regulatory proteins, troponin and tropomyosin, is known to increase the sliding speed of thin filaments in the in vitro motility assay.
    • Unfavorable interactions could occur at high ionic strength between adjacent tropomyosin molecules, between tropomyosin and troponin, or between other protein pairs.
    • Flight muscle contraction is regulated by both stretch and Ca 2 + induced thin filament (actin + tropomyosin + troponin complex) activation.

Origin

1940s: from Greek tropos 'turning' + myosin.

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