Provided below are ELISA kits targeting origin recognition complex subunit 4, a human protein encoded by ORC4. This protein is 436 amino acids long, with a mass of 50.4 kDa, and is a member of the ORC4 family. 3 isoforms have been identified. This is reported to be a nuclear protein. There is a noted implication in Meier-Gorlin syndrome 2. Other alias names for this protein include: origin recognition complex subunit 4 homolog, ORC4L, and ORC4P.