Figure 1.
Path finding result: the five lightest pathways found in the weighted graph, when the first and last reactions of the tryptophan biosynthesis are input seeds. Reactions are displayed as rectangles and compounds as ellipses. Seed nodes are highlighted in blue. Green arcs denote the lightest path (or paths in case of ex-aequos). The green box surrounds the path having a weight W ≤ Wmin + 10, where Wmin is the weight of the lightest path. Nodes that are only found in paths heavier than Wmin + 10 are surrounded by using red box. Dashed lines indicate the substrates and products of the seed reactions that are not in the paths.