, Structure of myosin head, with ADP .
The Structural Basis of the Myosin ATPase Activity
The eukaryotes seem to contain a major amount of motor proteins. These motor proteins are found to be in great coordination with the actin filaments. They are known as the Myosin. Myosin can be subdivided as Myosin 1 and Myosin 2. Myosin 1 possesses the contractile property like the actins and hence helps in muscle contraction. It also enables vesicular transportation. More of its functions are yet to be identified. Myosin 2 contains a huge proportion of Amino acids. The structure of Myosin 2 is similar to an usual Myosin molecule. They are divided as the head and the tail. The head domain combines with actin in order to initiate force, whereas in Myosin 2 this head is again subdivided into two terminals. The tail domain helps in easy communication with the cargo muscles and coordinates with other Myosin subunits.
Subunit Structure of Myosin - JBC
Abstract. Image analysis of electron micrographs of thin-sectioned myosin subfragment-1 (Sl) crystals has been used to determine the structure of the myosin head at ti25-A resolution. Previous work established that the unit cell of type I crystals of myosin Sl contains eight molecules arranged with orthorhombic space group symmetry P2 12,2, and provided preliminary information on the size and shape of the myosin head