Anti-TRP1 antibodies enable researchers to detect and measure the TRP1 antigen in biological samples. This target is a reported synonym of the PRSS1 gene, which encodes serine protease 1. This protein is known to function in proteolysis, among other biological roles. The human version of TRP1 has a canonical amino acid length of 247 residues and a protein mass of 26.6 kilodaltons. It is reported to be a secreted protein that is notably expressed in the small intestine, pancreas, and duodenum. TRP1 is a member of the Peptidase S1 protein family.