Anti-G protein-coupled receptor 42 antibodies are used for the immunodetection of the protein encoded by the GPR42 gene. In humans, the canonical protein has a reported length of 346 amino acid residues and a mass of 38.7 kDa. Its subcellular localization is in the cell membrane. A member of the G-protein coupled receptor 1 protein family, it is a suspected G protein-coupled receptor that may be activated by a major product of dietary fiber digestion, the short chain fatty acids (SCFAs), and that may play a role in the regulation of whole-body energy homeostasis and/or in intestinal immunity. Post-translational modifications have been described, including glycosylation. Other names for this target antigen include FFAR3L, GPR41L, GPR42P, G protein-coupled receptor 42 pseudogene, G-protein coupled receptor, and FFAR1L.