Anti-RGS4 antibodies are used in the immunodetection of the protein regulator of G protein signaling 4. In humans, the canonical protein has a reported length of 205 amino acid residues and a mass of 23.3 kDa. Up to 5 different isoforms have been reported for this protein. It is reported to be expressed in the brain and heart. RGS4 is known to inhibit signal transduction by increasing the GTPase activity of G protein alpha subunits thereby driving them into their inactive GDP-bound form. Post-translational modifications have been described, including palmitoylation and phosphorylation. The RGS4 gene has been associated with the disease, Schizophrenia. Synonyms for this target antigen include SCZD9, schizophrenia disorder 9, and RGP4. RGS4 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of RGS4 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.