Minichromosome Maintenance Complex Component 7 (MCM7) Human Recombinant Protein

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]

MCM7: 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. Component of the MCM2-7 complex. The complex forms a toroidal hexameric ring with the proposed subunit order MCM2-MCM6- MCM4-MCM7-MCM3-MCM5 (By simililarity). Interacts with the ATR- ATRIP complex and with RAD17. Interacts with TIPIN. Interacts with MCMBP. Belongs to the MCM family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: EC 3.6.4.12; DNA replication; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 7q21.3-q22.1

Cellular Component: nucleoplasm; membrane; MCM complex; cytoplasm; chromatin; cytosol

Molecular Function: ATP-dependent DNA helicase activity; protein binding; DNA binding; single-stranded DNA binding; ATP binding

Biological Process: DNA unwinding during replication; response to drug; cell proliferation; DNA replication initiation; regulation of phosphorylation; mitotic cell cycle; DNA strand elongation during DNA replication; DNA replication; response to DNA damage stimulus; G1/S transition of mitotic cell cycle