Required for DNA synthesis. Required for entry into or completion of S phase. Involved in DNA replication and seems to participate in the activation of the pre-replication complex (pre-RC) and in transcription elongation. May play a role as key coordinator in assembling the replication fork. Proposed to function at replication origins following the binding of the mcm2-7 complex prior to the recruitment of sna41. Probably is required to stimulate phosphorylation of the mcm2-7 complex by the dfp1-hsk1 kinase complex. May recruit the DNA polymerase alpha:primase complex to replication origins and is required to maintain it on chromatin independently of sna41. May have primase activity. Binds to single-stranded DNA. Self-associates (By similarity). Interacts with mcm2, mcm7, him1/dfp1, hsk1, pol1 and abp1. Associates with the mcm2-7 complex and the dfp1-hsk1 complex. Associates with chromatin. The zinc finger-like domain binds a zinc ion and is involved in self-association. Belongs to the MCM10 family.