Anti-cyclin J like antibodies are used in the immunodetection of the protein encoded by the CCNJL gene. In humans, the canonical protein has a reported length of 435 amino acid residues and a mass of 48.4 kDa. Alternative splicing is reported to yield 2 different isoforms for this protein. The cyclin J like protein is a member of the Cyclin protein family. Other names for this target antigen include cyclin-J-like protein.