Anti-PPR3 antibodies enable researchers to detect and measure the PPR3 antigen in biological samples. This target is a reported synonym of the NECTIN3 gene, which encodes nectin cell adhesion molecule 3. This protein is known to function in cell adhesion, among other biological roles. The human version of PPR3 has a canonical amino acid length of 549 residues and a protein mass of 61 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the cell membrane of cells and widely expressed in many tissue types. PPR3 is a member of the Nectin protein family.