Myosins

Synonyms

ATPase, Actin Activated

ATPase, Actin-Activated

ATPase, Actomyosin

ATPase, Myosin

Actin Activated ATPase

Actin-Activated ATPase

Actomyosin ATPase

Actomyosin Adenosinetriphosphatase

Adenosine Triphosphatase, Myosin

Adenosinetriphosphatase, Actomyosin

Adenosinetriphosphatase, Myosin

Myosin

Myosin ATPase

Myosin Adenosine Triphosphatase

Myosin Adenosinetriphosphatase

A diverse superfamily of proteins that function as translocating proteins. They share the common characteristics of being able to bind ACTINS and hydrolyze MgATP. Myosins generally consist of heavy chains which are involved in locomotion, and light chains which are involved in regulation. Within the structure of myosin heavy chain are three domains: the head, the neck and the tail. The head region of the heavy chain contains the actin binding domain and MgATPase domain which provides energy for locomotion. The neck region is involved in binding the light-chains. The tail region provides the anchoring point that maintains the position of the heavy chain. The superfamily of myosins is organized into structural classes based upon the type and arrangement of the subunits they contain.