A protein complex composed of actin and myosin; it is the essential contractile substance of muscle fiber, active with MgATP.
- platelet a. the contractile protein of platelets, responsible for clot retraction, platelet aggregation, and release of ADP and other biologic amines essential to platelet function. SYN: thrombosthenin.

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ac·to·my·o·sin .ak-tə-'mī-ə-sən n a viscous contractile complex of actin and myosin concerned together with ATP in muscular contraction

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a protein complex formed in muscle between actin and myosin during the process of contraction. See striated muscle.

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ac·to·my·o·sin (ak″to-miґo-sin) a complex of the proteins actin and myosin occurring in muscle. Cf. actin and myosin. See also myosin ATPase.

Medical dictionary. 2011.

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  • actomyosin — actomyosin. См. актомиозин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Actomyosin —   das, s, bei der Muskelkontraktion aus Actin und Myosin gebildeter Proteinkomplex …   Universal-Lexikon

  • actomyosin — [ak΄tō mī′ə sin΄] n. a complex of two proteins (actin and myosin) in muscle tissue, interacting with ATP to bring about muscular contraction …   English World dictionary

  • actomyosin — Generally: a motor system that is thought to be based on actin and myosin. The essence of the motor system is that myosin makes transient contact with the actin filaments and undergoes a conformational change before releasing contact. The… …   Dictionary of molecular biology

  • actomyosin — /æktəˈmaɪəsən/ (say aktuh muyuhsuhn) noun a complex of actin and myosin which is the major constituent of muscle. The shortening of actomyosin fibrils causes muscle contraction …  

  • actomyosin — aktomiozinas statusas T sritis chemija apibrėžtis Raumenų baltymų aktino ir miozino kompleksas. atitikmenys: angl. actomyosin rus. актомиозин …   Chemijos terminų aiškinamasis žodynas

  • actomyosin — noun Etymology: International Scientific Vocabulary actin + o + myosin Date: 1942 a contractile complex of actin and myosin that together with ATP is active during muscular contraction …   New Collegiate Dictionary

  • Actomyosin — Mikrofilamente in Fibroblasten der Maus, fluoreszenzmikroskopisch dargestellt Mikrofilamente sind fadenförmige Protein Strukturen in eukaryotischen Zellen. Zusammen mit den Mikrotubuli und Intermediärfilamenten bilden sie die Hauptmasse des …   Deutsch Wikipedia

  • actomyosin — n. [Gr. aktis, ray; mys, muscle] Actin and myosin linkage in myofilaments that shortens when stimulated resulting in muscle contraction …   Dictionary of invertebrate zoology

  • actomyosin — /ak teuh muy euh sin/, n. Biochem. a complex protein, consisting of myosin and actin, that is the major constituent of skeletal muscle and is thought to interact with ATP to cause muscle contraction. [1940 45; ACT(IN) + O + MYOSIN] * * * …   Universalium

  • actomyosin — noun A protein complex composed fo actin and myosin, found in muscle cells …   Wiktionary

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