Anti-GNAT3 antibodies are used in the immunodetection of the protein G protein subunit alpha transducin 3. In humans, the canonical protein has a reported length of 354 amino acid residues and a mass of 40.4 kDa. Its subcellular localization is in the cytoplasm. It is notably expressed in the duodenum and small intestine. It is a member of the G-alpha protein family. Post-translational modifications have been described, including myristoylation. Synonyms for this target antigen include guanine nucleotide binding protein, alpha transducing 3, gustatory G protein, gustducin alpha-3 chain, gustducin, alpha polypeptide, and guanine nucleotide-binding protein G(t) subunit alpha-3. GNAT3 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. A number of GNAT3 antibodies have been mentioned in research publications and have associated citations. Immunohistochemistry is a widely used application for these antibodies. ELISA and Western Blot are also common applications.