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

See Examples For:

myosin

The findings also suggest myosin -- a type of motor protein involved in muscle contraction -- plays a role in non-shivering thermogenesis during hibernation, where heat is produced independent of the muscle activity of shivering.

From Science Daily ● Feb. 20, 2024

They assessed whether hibernation affects the structure of two myosin proteins from the Thirteen-lined ground squirrel: Myh7 and Myh2.

From Science Daily ● Feb. 20, 2024

To measure the rate of ATP consumption by myosin, they used a specialised test called the Mant-ATP chase assay.

From Science Daily ● Feb. 20, 2024

The team did not observe cold-induced changes in myosin energy consumption in samples obtained during torpor.

From Science Daily ● Feb. 20, 2024

A well-known variety, called albumin, is found in the white of eggs and in the plasma of the blood, while the muscles contain an abundance of another variety, known as myosin.

From Physiology and Hygiene for Secondary Schools by Francis M. Walters