Substitution of Ala for Tyr567 in RB69 DNA Polymerase Allows dAMP and dGMP To Be Inserted opposite Guanidinohydantoin .
Beckman, J., Wang, M., Blaha, G., Wang, J., Konigsberg, W.H.(2010) Biochemistry 49: 8554-8563
- PubMed: 20795733 
- DOI: 10.1021/bi100913v
- Primary Citation of Related Structures:  
3NAE - PubMed Abstract: 
Continuous oxidative damage inflicted on DNA produces 7,8-dihydro-8-oxoguanine (8-oxoG), a commonly occurring lesion that can potentially cause cancer by producing G → T transversions during DNA replication. Mild oxidation of 8-oxoG leads to the formation of hydantoins, specifically guanidinohydantoin (Gh) and spiroiminodihydantoin (Sp), which are 100% mutagenic because they encode almost exclusively the insertion of dAMP and dGMP (encoding G → T and G → C transversions, respectively) ...