Anti-NEGR1 antibodies are used in the immunodetection of the protein neuronal growth regulator 1. In humans, the canonical protein has a reported length of 354 amino acid residues and a mass of 38.7 kDa. Its subcellular localization is in the cell membrane. Alternative splicing is reported to yield 2 different isoforms for this protein. A member of a the IgLON protein family, NEGR1 is suspected to be involved in cell-adhesion. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include a kindred of IgLON, neurotractin, and IgLON family member 4.