Myosin

Definition

Myosin is a type of motor protein found in muscle cells that, through its interaction with actin, plays a crucial role in muscle contraction and movement. It converts chemical energy in the form of ATP to mechanical energy, thus enabling the muscles to contract.

Related terms

Actin:

A globular structural protein that forms filaments, which work with myosin to facilitate muscle contraction.

ATP (Adenosine Triphosphate):

The primary energy carrier molecule that myosin uses to power muscle contraction.

Sarcomere:

The structural unit of a myofibril in striated muscle, consisting of a dark band (myosin) and the nearer half of each adjacent pale band (actin)