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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Base substitution mutations induced by metabolically activated aflatoxin B1.

We have determined the base substitutions generated by metabolically activated aflatoxin B1 in the lacI gene of a uvrB- strain of Escherichia coli. By monitoring over 70 different nonsense mutation sites, we show that activated aflatoxin B1 specifically induced GxC leads to TxA transversions. One possible pathway leading to this base change involves depurination at guanine residues. We consider this mechanism of mutagenesis in the light of our other findings that the carcinogens benzo[a]pyrene diol epoxide and N-acetoxyacetylaminofluorene also specifically induce GxC leads to TxA transversions.[1]

References

  1. Base substitution mutations induced by metabolically activated aflatoxin B1. Foster, P.L., Eisenstadt, E., Miller, J.H. Proc. Natl. Acad. Sci. U.S.A. (1983) [Pubmed]
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