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Noun, pl. myosins

1. Comprise a family of ATP-dependent motor proteins and are best known for their role in muscle contraction and their involvement in a wide range of other eukaryotic motility processes. They are responsible for actin-based motility. (

2. (Biochemistry) A large family of motor proteins found in eukaryotic tissues, allowing mobility in muscles. (

3. An albuminous body present in dead muscle formed in the process of coagulation which takes place in rigor mortis. (

4. The commonest protein in muscle; a globulin that combines with actin to form actomyosin. (

5. A fibrous globulin of muscle that can split ATP and that reacts with actin in muscle contraction to form actomyosin. (

6. A fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells. (Google Dictionary)

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