Figure 6

Homology vs minimal path length (MPL) for the whole metabolic network of E. coli. The plot shows the correlation between homology and MPL when all compounds are included. The solid line represents the real metabolic network of E. coli. The dotted vertical lines represent three standard deviations of the number of homologous enzyme pairs for the randomized networks. The number of homologous enzyme pairs has been normalized by the average number of homologous enzyme pairs for the randomized networks.