Anti-HTR1D antibodies are used in the immunodetection of the protein 5-hydroxytryptamine receptor 1D. In humans, the canonical protein has a reported length of 377 amino acid residues and a mass of 41.9 kDa. Its subcellular localization is in the cell membrane. It is notably expressed in the brain neocortex and caudate nucleus. A member of the G-protein coupled receptor 1 protein family, HTR1D is known to be involved with chemical synaptic transmission. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include HT1DA, HTR1DA, HTRL, RDC4, 5-HT-1D, and 5-HT1D. HTR1D gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some HTR1D antibodies may have been used in research and have associated citations. Immunohistochemistry is a widely used application for these antibodies. In addition, Western Blot is also a common application.