Anti-RNase A antibodies enable researchers to detect and measure the RNase A antigen in biological samples. This target is a reported synonym of the RNASE1 gene, which encodes ribonuclease A family member 1, pancreatic. This protein is a reported endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. The human version of RNase A has a canonical amino acid length of 156 residues and a protein mass of 17.6 kilodaltons. It is reported to be a secreted protein that is notably expressed in many tissues, such as the appendix and cerebellum. Other names for this target antigen include RAC1, RIB1, and RNS1.