Introduction
Myosins are a large family of motor proteins found in eukaryotic cells.The term myosin was originally used to describe a group of similar, but nonidentical, ATPases found in striated and smooth muscle cells.Later on numerous intracelular motility functions of these motor proteins were discovered.Myosnis are classified in to different subclasses based on the phylogenetic analysis of N-terminal ATPase domain.Myosinome database provides information on sequence, structure and function of myosin classes II, V and VI from five different organisms.