Anti-Guanine deaminase antibodies are used for the immunodetection of the protein encoded by the GDA gene. In humans, the canonical protein has a reported length of 454 amino acid residues and a mass of 51 kDa. Alternative splicing is reported to yield 3 different isoforms for this protein. A member of the ATZ/TRZ protein family, it is known to catalyze the hydrolytic deamination of guanine, producing xanthine and ammonia. Other names for this target antigen include GAH, GUANASE, NEDASIN, cytoplasmic PSD-95 interactor, cytoplasmic PSD95 interactor, and CYPIN. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some Guanine deaminase antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.