Abstract:Modular trans‐acyltransferase polyketide synthases (trans‐AT PKSs) are enzymatic assembly lines that biosynthesize complex polyketide natural products. Relative to their better studied cis‐AT counterparts, the trans‐AT PKSs introduce remarkable chemical diversity into their polyketide products. A notable example is the lobatamide A PKS, which incorporates a methylated oxime. Here we demonstrate biochemically that this functionality is installed on‐line by an unusual oxygenase‐containing bimodule. Furthermore, … Show more
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