actomyosin

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(ăk'tə-mī'ə-sĭn) pronunciation
n.
The system of actin and myosin that, with other substances, constitutes muscle fiber and is responsible for muscular contraction.

[ACT(IN) + MYOSIN.]


A protein formed by the coupling of actin and myosin during muscle actions. See also sliding-filament theory.

(ăk'tə-mī'ə-sĭn)
n.

A protein complex that is the essential contractile substance of muscle, composed of the globulin myosin and actin.

The complex of actin and myosin constituting muscle fibers and responsible for the contraction and relaxation of muscle.

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Mentioned in

apyrase (biochemistry)
muscle (in anatomy)
Albert von Szent-Györgyi (Hungarian–American biochemist)