Definition of tropomyosin in English:

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tropomyosin

Pronunciation: /ˌträpōˈmīəsən/ Pronunciation: /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.
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.

For editors and proofreaders

Syllabification: trop·o·my·o·sin

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