myosin

American  

[mahy-uh-sin] / ˈmaɪ ə sɪn /

noun

Biochemistry.

1. the principal contractile protein of muscle.

---

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

---

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.

---

Etymology

Origin of myosin

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

Example Sentences

See Examples For:

myosin

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

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

However, they did discover that the ATP turnover time of myosin molecules in both formations was lower in IBA and torpor compared to the SA phase, leading to an unexpected overall increase in ATP consumption.

From Science Daily ● Feb. 20, 2024

This revealed that there were also no changes in the energy consumption rates of myosin.

From Science Daily ● Feb. 20, 2024

As examples may be quoted, myosin the chief protein of ordinary meat or muscle, ovalbumin one of the proteins of egg-white, casein belonging to milk and cheese, and gluten a protein-mixture in flour.

From The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 by Sir Douglas Mawson