Mupirocin H, a novel metabolite resulting from mutation of the HMG-CoA synthase analogue, mupH in Pseudomonas fluorescens

Mutation of the HMG-CoA synthase encoding mupH gene in Pseudomonas fluorescens gives rise to a new metabolite formed from a truncated polyketide intermediate, providing in vivo evidence for the roles of mupH and cognate genes found in several "AT-less" and other bacterial PKS gene clusters responsible for the biosynthesis of diverse metabolites containing acetate/propionate derived side chains.