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Orc4 Degraded by proteasome in cytosol RNA primer-DNA primer Geminin Cdt1 RFC36 RFC Heteropentamer: RNA primer-DNA primer 5. Leading/lagging strand synthesis Orc2 RFC40 Mcm3 RNA primer-DNA primer: origin duplex:PCNA Phosphorylation of Mcm 2-7 complex Orc3 Mcm10 Orc2 Mcm6 Orc5 Cdt1 Orc3 Mcm3 Mcm7 RNA primer-DNA primer Primase 4. Switching of origins to post-replicative state Cdc6 RFC Heteropentamer: RNA primer-DNA primer PCNA homotrimer Ubiquitin Orc2 Mcm6 Orc2 Mcm4 Processive complex Phosphorylated Cdc6 2. Activation of the pre-replicative complex Cdt1 p70 3. DNA replication initiation Orc4 Phosphorylated Orc1 Orc complex Mcm5 Orc complex Cdc6 Cdc6 DNA Polymerase A Cdt1 Mcm2 Mcm10 Orc3 p180 1. Assembly of the pre-replicative complex p49 RFC140 RFC37 Orc complex RNA Primer Pre-replicative complex Ubiquitinated Cdc6 Mcm7 Mcm2 Orc5 Orc5 Mcm 4,6,7 trimer forms and associates with the replication fork DNA polymerase alpha: primase: origin complex Origin Orc complex Orc3 Pre-replicative complex Ubiquitin Mcm5 Cdc6 Mcm4 p58 DNA polymerase alpha: primase: origin complex Orc complex Degraded by proteasome in cytosol Orc1 Ubiquitinated Orc1 Cdt1 RFC38 GTP AgaP_AGAP004614 RPA3 AgaP_AGAP001971 AgaP_AGAP006387 AgaP_AGAP001421 AgaP_AGAP005321 AgaP_AGAP008723 AgaP_AGAP001929 dUTP AgaP_AGAP004615 AgaP_AGAP001290 AgaP_AGAP010220 AgaP_AGAP000978 AgaP_AGAP008910 AgaP_AGAP004579 AgaP_AGAP004408 ATP dCTP AgaP_AGAP011961 AgaP_AGAP006065 ATP AgaP_AGAP000474 ADP CDC7 UTP ADP AgaP_AGAP004957 AgaP_AGAP005176 POLD4 dGTP AgaP_AGAP010406 AgaP_AGAP009047 AgaP_AGAP007927 AgaP_AGAP003093 RPA4 AgaP_AGAP005144 POLD1 AgaP_AGAP008332 AgaP_AGAP007063 AgaP_AGAP010219 ATP AgaP_AGAP005800 POLD3 AgaP_AGAP007477 AgaP_AGAP004956 ATP dATP AgaP_AGAP004392 AgaP_AGAP001135 GMNN ASK CTP AgaP_AGAP004275 AgaP_AGAP011246
Description
DNA replication, the basis for biological inheritance, is a fundamental process occurring in all living organisms to copy their DNA. This process is "replication" in that each strand of the original double-stranded DNA molecule serves as template for the reproduction of the complementary strand. Hence, following DNA replication, two identical DNA molecules have been produced from a single double-stranded DNA molecule. Cellular proofreading and error-checking mechanisms ensure near perfect fidelity for DNA replication.
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