Background: 8-OxoG is a major oxidative lesion in DNA and is associated with cancer. Results: Kinetic and mass spectrometric studies demonstrate that human polymerase bypasses 8-oxoG in a largely error-free manner. Conclusion: Arginine 61 from the finger domain plays a key role in error-free bypass at the insertion stage. Significance: In addition to photo-adducts and cisplatinated DNA, polymerase might also be involved in accurate bypass of 8-oxoG in vivo.
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