Anti-ORC2 antibodies are used in the immunodetection of the protein origin recognition complex subunit 2. In humans, the canonical protein has a reported length of 577 amino acid residues and a mass of 66 kDa. Its subcellular localization is in the nucleus. A member of a the ORC2 protein family, ORC2 is a known component of the origin recognition complex (ORC) that binds origins of replication. Synonyms for this target antigen include origin recognition complex protein 2 homolog, origin recognition complex, subunit 2 homolog, and ORC2L.