Fig. 1.
A. fumigatus siderophore-biosynthetic pathway. For details of enzymatic reactions, see the text. Steps encoded by iron-repressed genes are marked by solid lines, including N5-ornithine transacetylation catalyzed by the unknown enzyme identified in this study, indicated by a question mark. N5-ornithine-transacetylation encoded by the constitutively expressed sidL gene characterized in this study is marked by a dashed line. Developmentally regulated FC hydroxylation is marked by a dotted line.