Which protein hydrolyzes atp during contraction?

Myosin.

Explanation:

Myosin is an ATPase, that is, the subset of enzymes that are capable of producing the hydrolysis of adenosine triphosphate (ATP) into adenosine diphosphate (ADP) and a free phosphorous ion (phosphate ion).

Answer

Myosin

Explanation:

Myosin is an example of motor proteins which depends on ATP hydrolysis to function during muscle contraction. They are primary located in the muscles cells. Other motor proteins are Kynesin and dynein.

Basically, myosin bind with actin to cause motility, hydrolyses of ATP and force transduction for muscle contraction.

Structurally it is made up of three domains the head, through which it binds with the actin, the linker neck through which it binds with the light chains, and tails which interact with the cargo molecules.