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Figure 7 | BMC Genomics

Figure 7

From: Preferential attachment in the evolution of metabolic networks

Figure 7

Horizontal gene transfer, phylogenetic group and connectivity. a) Average connectivities for enzymes in phylogenetic groups 1–5 in the metabolic network where the 15 most promiscuous compounds have been removed. The white bars represent the enzymes which have probably not been transferred to E. coli through horizontal gene transfer (HGT) and the black bars represent the enzymes which are likely to be examples of HGT. The numbers above the bars signify the number of enzymes in each group. b) The connectivity distribution for enzymes which are the result of horizontal transfer (red dots) and enzymes which are not (black circles).

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