MCM7/PRL

Acts as a component of the MCM2-7 complex (MCM complex) which is the replicative helicase essential for 'once per cell cycle' DNA replication initiation and elongation in eukaryotic cells. Core component of CDC45-MCM-GINS (CMG) helicase, the molecular machine that unwinds template DNA during replication, and around which the replisome is built (PubMed:25661590, PubMed:32453425, PubMed:34694004, PubMed:34700328, PubMed:35585232, PubMed:9305914). 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 (PubMed:32453425). Required for S-phase checkpoint activation upon UV-induced damage.

O-glycosylated (O-GlcNAcylated), in a cell cycle-dependent manner.

Ubiquitinated by ECS(LRR1) E3 ubiquitin-protein ligase complex when forks converge following formation of DNA interstrand cross-links. During mitosis, ubiquitinated by TRAIP when forks converge following formation of DNA interstrand cross-links (By similarity). Short ubiquitin chains on MCM7 promote recruitment of DNA glycosylase NEIL3 (By similarity). 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 (By similarity).

Belongs to the MCM family.

• Nucleus
• Chromosome
• Associated with chromatin before the formation of nuclei and detaches from it as DNA replication progresses.

CDC47, MCM2, MCM7, DNA replication licensing factor MCM7, CDC47 homolog, P1.1-MCM3

• entrezGene:4176
• omim:600592
• swissprot:P33993

Proteins

Immunology & Infectious Disease

81308Da