Complex syntenies involving the glg and bio operon genes. Complex syntenies were obtained by using as query sequences the E. coli proteins GlgA (A) or BioF (B) with the same bacterial organisms as reported by Danielou and co-workers . In both cases, the characteristic high genomic plasticity of this region could be efficiently processed using SyntTax. A consistent color coding permitted the correct identification of both orthologs and paralogs. The genes corresponding to the query proteins are drawn in bold. These gene maps were produced by SyntTax in '.pdf' format and were edited as follows: the genes were renamed consistently and genes outside the synteny were removed for clarity.