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A protein complex composed of actin and myosin; it is the essential contractile substance of muscle fiber, active with MgATP.
A complex of actin, myosin, and associated proteins that is responsible for contraction in cells, especially muscle cells.
Actomyosin(1) A term which considers the molecular motors—actin and myosin—as a single functional unit
(2) A G actin-like contractile protein complex found in platelets which consists of actin and myosin in a actin:myosin ratio of 100:1—muscle has a ratio of 7:1—and which appears with platelet activation.
A protein complex composed of actin and myosin; the essential contractile substance of muscle fiber.