Mapping of enzyme and metabolite data on KEGG pathways. The pathway 500 (Starch and sucrose metabolism) was downloaded from the KEGG Pathway database . Enzymes present in the model plant Arabidopsis thaliana as predicted from sequence information are shown in green. Selected enzyme activities and metabolite concentrations from wildtype potato tubers, and tubers expressing a yeast invertase either in an inducible or constitutive manner  were mapped on the pathway (which for better visualization was slightly modified using the built-in graph editor of VANTED). See legend of Figure 3 for details on the diagrams. The number of matches between the data set and all KEGG pathways is shown in the first number next to the pathway entry. The second number shows the number of enzymes in a pathway, the last the total number of nodes in the pathway (enzymes, metabolites, and links to other pathways).