MCM helicases are a family of helicases that play an important role in replication and homologous recombination repair. The heterohexameric ring-shaped Mcm2-7 complex is part of the replicative helicase that unwinds parental double-stranded DNA at a replication fork to provide single-stranded DNA templates for the replicative polymerases. Mcm8 and Mcm9, form a complex required for homologous recombination (HR) repair induced by DNA interstrand crosslinks (ICLs).
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