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DNA REPLICATION
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Nucleotid & Nucleosid
Nucleosid
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*Figure 07.08
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*Figure 07.09
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*Figure 07.18
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Polymerization of the deoxynucleotides during DNA synthesis. The β and γ phosphates of each deoxynuleosid triphosphate are cleaved off to give energy for the polymerization reaction
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A single base can be flipped out from the double helix,which could be important in recombination and repair
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*Figure 01.11
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*Figure 09.23
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*DNA polymerase { ΙΙΙ , Ι }
*Nuclease { endonuclease , exonuclease [ 5´,3´ exonuclease]}
*DNA ligase
*Primase
*Accessory proteins : 10 different protein: β clamp → dnaN gene , clamp loader → help the β clamp
*Helicases and helix- desabilizing proteins or single strand DNA binding proteins
*Topoisomerases
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*Figure 09.18
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ori C
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Initiation of replication at E.coli oriC
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DNA Repair*Mismatch repair
*Excision repair
*Recombination repair
*SOS repair
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Mismatch repair(methyl-directed mismatch repair)
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