Rabbit Anti-Human MCM2 monoclonal antibody for FC, IHC-P, WB. MCM2 (Mini chromosome maintenance protein 2) is involved in regulating DNA replication. MCM2 (also called CDCL1, mitotin and BM28), is a human nuclear protein that is crucial in the cell cycle, being involved in the onset of DNA replication and cell division. It is similar to members of the family of early S-phase proteins.