Anti-ATG21 antibodies enable researchers to detect and measure the ATG21 antigen in biological samples. This target is a reported synonym of the WIPI2 gene, which encodes WD repeat domain, phosphoinositide interacting 2. This protein is known to function in autophagy pathways, among other biological roles. The human version of ATG21 has a canonical amino acid length of 454 residues and a protein mass of 49.4 kilodaltons, although 6 isoforms have been identified. It is reported to be localized in the membrane of cells. Other names for this target antigen include ATG18B and CGI-50. Indicated applications for ATG21 antibodies listed below include ELISA and Western Blot.