actomyosin

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 hydrolysis of ATP is coupled to movement, through the requirement for ATP to restore the configuration of myosin prior to repeating the cycle. More specifically: a viscous solution formed when actin and myosin solutions are mixed at high salt concentrations. The viscosity diminishes if ATP is supplied and rises as the ATP is hydrolyzed. Extruded threads of actomyosin will contract in response to ATP.

Dictionary of molecular biology. 2004.

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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 — /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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