Anti-AGBL4 antibodies are used in the immunodetection of the protein AGBL carboxypeptidase 4. In humans, the canonical protein has a reported length of 503 amino acid residues and a mass of 58.2 kDa. Its subcellular localization is in the golgi and cytoplasm. Alternative splicing is reported to yield 2 different isoforms for this protein. A member of a the Peptidase M14 protein family, AGBL4 is a reported metallocarboxypeptidase that mediates protein deglutamylation of tubulin and non-tubulin target proteins. Synonyms for this target antigen include ATP/GTP binding protein like 4, protein deglutamylase CCP6, and cytosolic carboxypeptidase 6.