Anti-FAP3 antibodies enable researchers to detect and measure the FAP3 antigen in biological samples. This target is a reported synonym of the NTHL1 gene, which encodes nth like DNA glycosylase 1. The human version of FAP3 has a canonical amino acid length of 312 residues and a protein mass of 34.4 kilodaltons. It is reported to be localized in the nucleus and mitochondria of cells and widely expressed in many tissue types. FAP3 is a member of the Nth/MutY protein family.