Article
Repair system for noncanonical purines in Escherichia coli.
Journal of bacteriology - 1 May 2003
Burgis Nicholas E, Brucker Jason J, Cunningham Richard P
Abstract excerpt
Exposure of Escherichia coli strains deficient in molybdopterin biosynthesis (moa) to the purine base N-6-hydroxylaminopurine (HAP) is mutagenic and toxic. We show that moa mutants exposed to HAP also exhibit elevated mutagenesis, a hyperrecombination phenotype, and increased SOS induction. The E. coli rdgB gene encodes a protein homologous to a deoxyribonucleotide triphosphate pyrophosphatase from Methanococcus...
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