Anti-DLGAP1 antibodies are used in the immunodetection of the protein DLG associated protein 1. In humans, the canonical protein has a reported length of 977 amino acid residues and a mass of 108.9 kDa. Its subcellular localization is in the cell membrane. Alternative splicing is reported to yield 7 different isoforms for this protein. It is reported to be expressed in the brain. A member of a the SAPAP protein family, DLGAP1 is known to be a part of the postsynaptic scaffold in neuronal cells. Post-translational modifications have been described, including ubiquitination. Synonyms for this target antigen include DAP-1-ALPHA, DAP-1-BETA, DAP1, DLGAP1A, DLGAP1B, GKAP, SAPAP1, and DAP-1.