Anti-cyclin P antibodies are used for the immunodetection of the protein encoded by the CCNP gene. In humans, the canonical protein has a reported length of 307 amino acid residues and a mass of 33.6 kDa. Its subcellular localization is in the nucleus. Alternative splicing is reported to yield 2 different isoforms for this protein. It is suspected to be involved in the regulation of proliferation and migration. Other names for this target antigen include cyclin N-terminal domain containing 2 and cyclin N-terminal domain-containing protein 2. Gene orthologs have been identified in the bovine, frog, zebrafish and chimpanzee species.