Myosin, Myosin Thread

Protein of Myofibrille, the thick filament of the myofibrille

The myosin threads together with the actin filamentsn are the smallest units in the structure of the musclecell. The myosin in it is also called the "motor protein" of the human body.

The muscle cell is shortened by a reaction induced by calcium and maintained by high-energy ATP, in which the filaments slide into each other.

https://de.wikipedia.org/wiki/Myosin _{(Wikipedia CC-by-sa-3.0)}