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

The Weijer group was able to implement the suggested myosin distribution in a living embryo, and it developed a circular attractor rather than a linear one.

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

They therefore conclude that Myh2 hyper-phosphorylation is specifically associated with torpor, rather than hibernation in general, and propose that this serves to increase myosin stability in small mammals.

From Science Daily • Feb. 20, 2024

As not much myosin is extracted from meat in soup making, the solid part of meat must be eaten in order to obtain the greatest nourishment.

From School and Home Cooking by Greer, Carlotta Cherryholmes