Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells. Polymerization of globular actin (G-actin) leads to a structural filament (F-actin) in the form of a two-stranded helix. Each actin can bind to 4 others. Belongs to the actin family. Note: This description may include information from UniProtKB.
Protein type: Contractile; Cytoskeletal; Motility/polarity/chemotaxis