actin filament

actin filament
one of the thin contractile myofilaments in a myofibril, composed mainly of actin; each actin filament is surrounded by three myosin filaments.

Medical dictionary. 2011.

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  • Actin — G Actin (PDB code: 1j6z). ADP and the divalent cation are highlighted …   Wikipedia

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  • actin — noun a) A globular structural protein that polymerizes in a helical fashion to form an actin filament (or microfilament). b) One of the six isoforms of actin …   Wiktionary

  • Filament D'actine — Un filament d actine, ou microfilament, est un homopolymère d actine, protéine de 42 kDa (Unité de masse atomique). C est un constituant essentiel du cytosquelette des cellules eucaryotes, ainsi que des fibres musculaires. L actine sous forme de… …   Wikipédia en Français

  • actin — /ak teuhn/, n. Biochem. a globulin that is present in muscle plasma and that in connection with myosin plays an important role in muscle contraction. [1940 45; perh. ACT + IN2] * * * One of two proteins responsible for contraction of muscle cells …   Universalium

  • Filament d'actine — Un filament d actine, ou microfilament, est un homopolymère d actine, protéine de 42 kDa (Unité de masse atomique). C est un constituant essentiel du cytosquelette des cellules eucaryotes, ainsi que des fibres musculaires. L actine représente… …   Wikipédia en Français

  • filament — 1. SYN: filamentum. 2. In bacteriology, a fine threadlike form, unsegmented or segmented without constrictions. [L. filamentum, fr. filum, a thread] actin f. one of the contractile elements in muscular fibers and other cells; in skeletal muscle,… …   Medical dictionary

  • actin binding proteins — A diverse group of proteins that bind to actin and that may stabilize F actin filaments, nucleate filament formation, cross link filaments, lead to bundle formation etc …   Dictionary of molecular biology

  • Sliding filament model — Ratchet mechanism redirects here (it is the name given in some textbooks to the sliding filament mechanism). For the mechanical device, see Ratchet (device) The sliding filament theory describes a process used by muscles to contract. It was… …   Wikipedia

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