myosin
A family of motor ATPases that interact with F-actin filaments. An increasing number of different myosins are being described. Classical striated muscle myosin is myosin II. (See also myosin light chains, meromyosin.) Myosin I is a low molecular weight (111 -128kD) form found in protozoa ( Acanthamoeba and Dictyostelium ) that does not self-assemble and is found in the cytoplasm as a globular monomeric molecule that can associate with membranes and transport membrane vesicles along microfilaments.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Myosin — bezeichnet eine Familie von Motorproteinen in eukaryotischen Zellen. Myosin ist als ein wesentlicher Bestandteil im Muskel auch an der Umwandlung von chemischer Energie in Kraft und Bewegung beteiligt. Des Weiteren ist es in Kooperation mit… …   Deutsch Wikipedia

  • Myosin — Myosin, in vielen pflanzlichen und tierischen Zellen, v.a. in Muskelzellen, vorhandenes Protein, das zusammen mit ⇒ Actin Bewegungsvorgänge ermöglicht. Molekulares M. besteht aus sechs Untereinheiten, zwei identischen schweren und vier leichten… …   Deutsch wörterbuch der biologie

  • Myosin — My o*sin, n. [Gr. my^s, myo s a muscle.] (Physiol. Chem.) A protein present in muscle, serving as the principle contractile protein in muscle contraction. Note: It was earlier considered as being formed in the process of coagulation which takes… …   The Collaborative International Dictionary of English

  • myosin — myosin. См. миозин. (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.

  • Myosīn — Myosīn, s. Muskeleiweißkörper …   Meyers Großes Konversations-Lexikon

  • Myosin — Myosīn, s. Fibrin und Globuline …   Kleines Konversations-Lexikon

  • myosin — [mī′ō sin] [< Gr mys (gen. myos), a muscle, MOUSE + IN1] n. a protein in muscles: see ACTOMYOSIN …   English World dictionary

  • Myosin — Part of the myosin II structure. Atoms in the heavy chain are colored red on the left hand side, and atoms in the light chains are colored orange and yellow. Myosins comprise a family of ATP dependent motor proteins and are best known for their… …   Wikipedia

  • myosin — A globulin present in muscle that has an ATPase activity; in combination with actin, it forms actomyosin; m. forms the thick filaments in muscle. m. light chain kinase a calcium/ …   Medical dictionary

  • Myosin — Myo|sin 〈n. 11; Biochem.〉 ein Muskeleiweiß [zu grch. mys, Gen. myos „Muskel“] * * * My|o|sin [↑ myo (1) u. ↑ in (3)], das; s, e: in Muskulatur zu ca. 20 % der Trockenmasse enthaltenes Protein (MG ca. 520 000) aus zwei schweren (MG je 220 000) u.… …   Universal-Lexikon

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