myosin

American  

[mahy-uh-sin] / ˈmaɪ ə sɪn /

noun

Biochemistry.

1. the principal contractile protein of muscle.

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myosin British  

/ ˈmaɪəsɪn /

noun

1. the chief protein of muscle that interacts with actin to form actomyosin during muscle contraction; it is also present in many other cell types

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myosin Scientific  

/ mī′ə-sĭn /

1. A protein found in muscle tissue as a thick filament made up of an aggregate of similar proteins. Myosin and the protein actin form the contractile units (sarcomeres) of skeletal muscle. In the sarcomere, actin and myosin filaments slide past each other to cause the shortening of a muscle fiber.

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Etymology

Origin of myosin

First recorded in 1865–70; my- + -ose ² + -in ²

Example Sentences

Serra's predictions suggested that with a particular distribution of myosin, they could make a ring-shaped short-time attractor.

From Science Daily • May 28, 2024

While myosin drives cell movement within the embryo, there are also external forces, or disturbances, that push and pull against the embryo as well.

From Science Daily • May 28, 2024

They found no differences in the proportion of myosin in the DRX or SRX state between the two phases.

From Science Daily • Feb. 20, 2024

Lewis and colleagues hypothesised that changes in the proportion of myosin in the DRX or SRX states may contribute to the reduced energy use seen during hibernation.

From Science Daily • Feb. 20, 2024

The myosin, which is the most important protein and occurs in the greatest quantity, hardens after the animal has been killed and the muscles have become cold.

From Woman's Institute Library of Cookery Volume 3: Soup; Meat; Poultry and Game; Fish and Shell Fish by Woman's Institute of Domestic Arts and Sciences