Figure 2From: On the origin and evolution of biosynthetic pathways: integrating microarray data with structure and organization of the Common Pathway genesThe structure of ask and hom genes. Phylogenetic tree constructed using the RpoD sequences (Neighbor Joining, 2250 Boostrap Replicates, Complete Deletion, Poisson Correction) of the 58 proteobacteria together with the number and the structure of all the retrieved ask and hom genes.Back to article page