actin

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Definition/MeaningWord/Phrase
protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions actomyosin
microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence cytoskeleton
commonest protein in muscle; a globulin that combines with actin to form actomyosin myosin
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