Abstract
Woodybactins A-D are a suite of new fatty acyl siderophores produced by the luminous marine bacterium Shewanella woodyi MS32. While this bacterium has a set of genes homologous to the biosynthetic gene cluster for aerobactin, aerobactin is not produced. The arrangement of these genes within the genome differs in S. woodyi MS32 when compared to E. coli and other species producing siderophores similar to aerobactin, and one synthetase gene which would append a second acyl-hydroxylysine to the terminal carboxylate of citrate is not functional. Within the suite of woodybactins A-D, which differ by the fatty acid appendage, one contains an unusual C9 (9:0) fatty acid and one contains a unique branched C9 iso (9:0 iso) fatty acid, as well as a C8 (8:0) and C10 (10:0) fatty acid.
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