Figure 8.

Global path through the networks. The nodes (genes) along this particular path of five links in the E. coli network are shown as circles. The symbols associated with each node represent the functional pathways in which the gene is annotated. Moon, phenylalanine, tyrosine and tryptophan biosynthesis; diamond, histidine metabolism; exclamation mark, phenylalanine metabolism; X, tyrosine metabolism; star, aminoacyl-tRNA biosynthesis; check mark, alanine and aspartate metabolism.