Anti-TRB6 antibodies enable researchers to detect and measure the TRB6 antigen in biological samples. This target is a reported synonym of the TAS2R9 gene, which encodes taste 2 receptor member 9. This protein is known to be a gustducin-coupled receptor implicated in the perception of bitter compounds in the oral cavity and the gastrointestinal tract. The human version of TRB6 has a canonical amino acid length of 312 residues and a protein mass of 35.6 kilodaltons. It is reported to be localized in the membrane of cells. Other names for this target antigen include T2R9 and taste receptor type 2 member 9.