Figure 1

Schematic representation of the Asp-family and aromatic amino acids metabolic networks analyzed in the present report. The positions of the different amino acids in the different networks are marked in boxes. Biosynthetic/allosteric, biosynthetic/non-allosteric and catabolic enzymatic steps are indicated respectively by blue, black and red arrows, while enzymatic steps whose genes have not yet been identified are indicated by grey arrows. Numbers near each arrow refer to enzyme names as provided in Table 1. (A) The Asp-family network; (B) The Aromatic amino acids network. Dotted lines ending by a bar sign represent feedback inhibition loops.