Myosin is a type of protein found in muscle cells that plays a key role in muscle contraction and movement. It is responsible for converting chemical energy into mechanical work during the process of muscle contraction. Myosin molecules contain a head region that binds to actin, another protein found in muscle cells, and a tail region that connects to other myosin molecules. This interaction between myosin and actin allows muscles to shorten and generate force, leading to movement. Research on myosin includes studying its structure, function, regulation, and the role it plays in various muscle-related diseases and conditions.