Acts as a replication initiation factor that brings together the MCM2-7 helicase and the DNA polymerase alpha/primase complex in order to initiate DNA replication. Additionally, plays a role in preventing DNA damage during replication (By similarity). Self-associates. Each zinc finger-like domain binds a zinc ion and is involved in both ssDNA and dsDNA binding, as is the OB-fold domain. The N-terminal domain mediates homodimerization. Belongs to the MCM10 family.