A fibrous protein extractable from muscle; sometimes specified as t. B to distinguish it from t. A (paramyosin) prominent in mollusks.

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tro·po·my·o·sin .träp-ə-'mī-ə-sən, .trōp- n a protein of muscle that forms a complex with troponin regulating the interaction of actin and myosin in muscular contraction

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tro·po·my·o·sin (tro″po-miґo-sin) muscle protein of the I band, occurring in several tissue-specific isoforms, that inhibits contraction unless its position is modified by troponin so that the myosin molecules can make contact with the actin molecules. See Plate 32.

Medical dictionary. 2011.

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  • Tropomyosin — Tropomyosin, lang gestrecktes Proteinmolekül in den Actinfilamenten der ⇒ Myofilamente, windet sich als Doppelhelix um den doppelhelicalen Strang aus F Actin und verhindert zusammen mit Troponin als Sperrmolekülkomplex, dass Actin im Ruhezustand… …   Deutsch wörterbuch der biologie

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  • tropomyosin — tropomiozinas statusas T sritis chemija apibrėžtis Raumenų baltymas. atitikmenys: angl. tropomyosin rus. тропомиозин …   Chemijos terminų aiškinamasis žodynas

  • Tropomyosin kinase — In enzymology, a tropomyosin kinase (EC number| is an enzyme that catalyzes the chemical reaction:ATP + tropomyosin ightleftharpoons ADP + O phosphotropomyosinThus, the two substrates of this enzyme are ATP and tropomyosin, whereas its… …   Wikipedia

  • tropomyosin — noun Date: 1946 a protein of muscle that forms a complex with troponin regulating the interaction of actin and myosin in muscular contraction …   New Collegiate Dictionary

  • tropomyosin — tro·po·my·o·sin (trō pə mīʹə sĭn, trŏp ə ) n. Any of a group of muscle proteins that bind to molecules of actin and troponin to regulate the interaction of actin and myosin. * * * …   Universalium

  • tropomyosin — noun Any of a family of muscle proteins that regulate the interaction of actin and myosin …   Wiktionary

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