Efficient and High Fidelity Incorporation of Dctp Opposite 7,8-Dihydro-8-Oxodeoxyguanosine by Sulfolobus Solfataricus DNA Polymerase Dpo4
Zang, H., Irimia, A., Choi, J.-Y., Angel, K.C., Loukachevitch, L.V., Egli, M., Guengerich, F.P.(2006) J Biol Chem 281: 2358
- PubMed: 16306039 
- DOI: 10.1074/jbc.M510889200
- Primary Citation of Related Structures:  
2C22, 2C28, 2C2D, 2C2E, 2C2R - PubMed Abstract: 
DNA polymerases insert dATP opposite the oxidative damage product 7,8-dihydro-8-oxodeoxyguanosine (8-oxoG) instead of dCTP, to the extent of >90% with some polymerases. Steady-state kinetics with the Y-family Sulfolobus solfataricus DNA polymerase IV (Dpo4) showed 90-fold higher incorporation efficiency of dCTP > dATP opposite 8-oxoG and 4-fold higher efficiency of extension beyond an 8-oxoG:C pair than an 8-oxoG:A pair ...