Figure 10From: Lateral gene transfer and ancient paralogy of operons containing redundant copies of tryptophan-pathway genes in Xylellaspecies and in heterocystous cyanobacteriaComparison of TrpAa•TrpAb linker regions. The seven independent fusions that are suggested were aligned with free-standing TrpAa and TrpAb proteins in order to visualize the inter-domain linker regions. Amino-acid residue numbering is indicated at the left and right margins.Back to article page