Tags: Protein.
Tropomyosin alpha-1 chain is a protein that in humans is encoded by the TPM1 gene.This gene is a member of the tropomyosin family of highly conserved widely distributed actin-binding proteins involved in the contractile system of striated and smooth muscles and the cytoskeleton of non-muscle cells. Tropomyosin is composed of two alpha-helical chains arranged as a coiled-coil. It is polymerized end to end along the two grooves of actin filaments and provides stability to the filaments.