Anti-Psp antibodies enable researchers to detect and measure the Psp antigen in biological samples. This target is a reported synonym of the PSPN gene, which encodes persephin. This protein is known to function in nervous system development, among other biological roles. The human version of Psp has a canonical amino acid length of 156 residues and a protein mass of 16.6 kilodaltons. It is reported to be a secreted protein. Psp is a member of the TGF-beta protein family.