MCM7

The protein encoded by this gene is one of the highly conserved mini-chromosome maintenance proteins (MCM) that are essential for the initiation of eukaryotic genome replication. The hexameric protein complex formed by the MCM proteins is a key component of the pre-replication complex (pre_RC) and may be involved in the formation of replication forks and in the recruitment of other DNA replication related proteins. The MCM complex consisting of this protein and MCM2, 4 and 6 proteins possesses DNA helicase activity, and may act as a DNA unwinding enzyme. Cyclin D1-dependent kinase, CDK4, is found to associate with this protein, and may regulate the binding of this protein with the tumorsuppressor protein RB1/RB. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]

Minichromosome Maintenance Complex Component 7

Acts as component of the MCM2-7 complex (MCM complex) which is the putative replicative helicase essential for 'once per cell cycle' DNA replication initiation and elongation in eukaryotic cells. The active ATPase sites in the MCM2-7 ring are formed through the interaction surfaces of two neighboring subunits such that a critical structure of a conserved arginine finger motif is provided in trans relative to the ATP-binding site of the Walker A box of the adjacent subunit. The six ATPase active sites, however, are likely to contribute differentially to the complex helicase activity. Required for S-phase checkpoint activation upon UV-induced damage.

Cell cycle Source: UniProtKB-KW
Cell population proliferation Source: Ensembl
Cellular response to DNA damage stimulus Source: UniProtKB
Cellular response to epidermal growth factor stimulus Source: Ensembl
Cellular response to xenobiotic stimulus Source: Ensembl
DNA replication Source: ProtInc
DNA replication initiation Source: GO_Central
DNA strand elongation involved in DNA replication Source: GO_Central
DNA unwinding involved in DNA replication Source: ComplexPortal
Double-strand break repair via break-induced replication Source: GO_Central
Regulation of DNA-dependent DNA replication initiation Source: ComplexPortal
Regulation of phosphorylation Source: UniProtKB

Nucleus
Other locations
Chromosome
Note: Associated with chromatin before the formation of nuclei and detaches from it as DNA replication progresses.

O-glycosylated (O-GlcNAcylated), in a cell cycle-dependent manner.
Ubiquitinated by traip when forks converge following formation of DNA interstrand cross-links. Short ubiquitin chains on MCM7 promote recruitment of DNA glycosylase NEIL3. If the interstrand cross-link cannot be cleaved by NEIL3, the ubiquitin chains continue to grow on MCM7, promoting the unloading of the CMG helicase complex by the VCP/p97 ATPase.