Anti-DRD4 antibodies are used in the immunodetection of the protein dopamine receptor D4. In humans, the canonical protein has a reported length of 419 amino acid residues and a mass of 43.9 kDa. Its subcellular localization is in the cell membrane. It is reported to be highly expressed in retina. A member of the G-protein coupled receptor 1 protein family, DRD4 is known to be involved with chemical synaptic transmission. Post-translational modifications have been described, including ubiquitination, palmitoylation and glycosylation. Synonyms for this target antigen include D(4) dopamine receptor, D(2C) dopamine receptor, dopamine D4 receptor, seven transmembrane helix receptor, and D4DR. DRD4 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of DRD4 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.