Minichromosome maintenance

Mini chromosome maintenance complex, or minichromosome maintenance protein complex or mini-chromosome maintenance (MCM) 2-7 helicase complex has a role in both the initiation and the elongation phases of eukaryotic DNA replication, specifically the formation and elongation of the replication fork. MCM is a component of the pre-replication complex, which is a component of the licensing factor. MCM is a hexamer of six related polypeptides (mcm2-7) that form a ring structure.