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Carcinogens are generally mutagens, which is understandable given that tumor cells grow uncontrollably because they have mutations in critical genes involved in growth control. Carcinogens often induce a complex pattern of mutations (e.g., GC->TA, GC->AT, etc.). These mutations are thought to be initiated when a DNA polymerase encounters a carcinogen-DNA adduct during replication. In principle,...
The process of carcinogenesis is initiated by mutagenesis, which often involves replication past damaged DNA. One question - what exactly is a DNA polymerase seeing when it incorrectly copies a damaged DNA base (e.g., inserting dATP opposite a dG adduct)? - has not been answered in any case. Herein, we reflect on this question, principally by considering the mutagenicity of one activated form of benzo[a]pyrene,...
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