Nicholas Jannetty February 13, 2013 4 - A Prodrug Resistance Mechanism Is Involved in Colibactin Biosynthesis and Cytotoxicity. Nicholas Jannetty February 13, 2013 4. Brotherton, Carolyn A.; Balskus, Emily P. A Prodrug Resistance Mechanism Is Involved in Colibactin Biosynthesis and Cytotoxicity. J. Am. Chem. Soc. 2013, 135, 3359–3362. DOI: https://doi.org/10.1021/ja312154m.