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

"Our results also suggest that myosin may act as a contributor to skeletal muscle non-shivering thermogenesis during hibernation."

From Science Daily • Feb. 20, 2024

Cold exposure caused an increase in ATP consumption by myosin in samples obtained during SA and IBA, suggesting that myosin may contribute to non-shivering thermogenesis in small hibernators.

From Science Daily • Feb. 20, 2024

The chief proteins are: First, the albuminoids, which are represented by the albumin in eggs, the casein in milk and cheese, the myosin of muscle and the gluten of wheat.

From Maintaining Health Formerly Health and Efficiency by Alsaker, R. L.