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Orc5 DNA polymerase alpha: primase: origin complex RNA primer-DNA primer Cdt1 Geminin p180 Orc3 4. Switching of origins to post-replicative state Ubiquitin RFC38 Mcm2 RFC Heteropentamer: RNA primer-DNA primer Cdt1 Orc2 Mcm7 Orc3 Mcm4 Orc3 Cdt1 Orc2 Mcm2 Mcm5 Ubiquitinated Cdc6 RNA primer-DNA primer: origin duplex:PCNA 1. Assembly of the pre-replicative complex Cdc6 Degraded by proteasome in cytosol DNA Polymerase A Orc4 Mcm4 Orc5 Mcm3 Orc complex Phosphorylated Orc1 Pre-replicative complex Cdc6 p58 2. Activation of the pre-replicative complex Orc5 RNA Primer Processive complex Orc complex Mcm10 Orc complex Mcm10 DNA polymerase alpha: primase: origin complex Cdc6 Cdt1 Mcm7 Orc1 p70 Pre-replicative complex RNA primer-DNA primer RFC40 RFC36 RFC Heteropentamer: RNA primer-DNA primer PCNA homotrimer 5. Leading/lagging strand synthesis Phosphorylation of Mcm 2-7 complex 3. DNA replication initiation Ubiquitinated Orc1 Mcm5 Cdt1 Orc2 Orc3 RFC140 Ubiquitin Orc complex Origin Primase Mcm 4,6,7 trimer forms and associates with the replication fork Mcm6 Orc2 Mcm3 p49 Orc complex Mcm6 Degraded by proteasome in cytosol Orc4 Phosphorylated Cdc6 Cdc6 RFC37 AgaP_AGAP004392 AgaP_AGAP006387 AgaP_AGAP005176 dUTP AgaP_AGAP006065 CDC7 GMNN AgaP_AGAP005800 RPA4 UTP AgaP_AGAP004614 AgaP_AGAP007477 AgaP_AGAP001290 AgaP_AGAP000474 AgaP_AGAP008332 AgaP_AGAP011961 AgaP_AGAP008723 AgaP_AGAP010219 GTP ATP AgaP_AGAP001421 AgaP_AGAP001929 ADP AgaP_AGAP010406 ATP ASK CTP ATP AgaP_AGAP007063 POLD1 POLD3 dCTP AgaP_AGAP004615 AgaP_AGAP003093 AgaP_AGAP005321 AgaP_AGAP005144 RPA3 AgaP_AGAP004579 POLD4 AgaP_AGAP000978 AgaP_AGAP007927 ADP AgaP_AGAP004275 AgaP_AGAP008910 AgaP_AGAP009047 AgaP_AGAP004408 dATP dGTP AgaP_AGAP001971 AgaP_AGAP004956 AgaP_AGAP011246 AgaP_AGAP010220 ATP AgaP_AGAP001135 AgaP_AGAP004957
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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