Anti-capping protein (actin filament) muscle Z-line, alpha 1 antibodies are protein reagents that detect specific antigens. The capping protein (actin filament) muscle Z-line, alpha 1 antigen is another term for the human protein capping actin protein of muscle Z-line subunit alpha 1, encoded by the CAPZA1 gene. The protein is known to function in cytoskeleton organization and the assembly of protein complexes, among other biological roles. Canonically, it has an amino acid length of 286 residues and a mass of 32.9 kilodaltons. Its subcellular localization is in the cytoplasm and it is widely expressed in many tissue types. The capping protein (actin filament) muscle Z-line, alpha 1 protein is a member of the F-actin-capping protein alpha subunit protein family. Other alias names for capping protein (actin filament) muscle Z-line, alpha 1 include CAPPA1, CAPZ, and CAZ1.