| Glycolysis / Gluconeogenesis |
| Citrate cycle (TCA cycle) |
| Phenylalanine, tyrosine and tryptophan biosynthesis |
| Phosphonate and phosphinate metabolism |
| Pyruvate metabolism |
| Methane metabolism |
| Carbon fixation in photosynthetic organisms |
| Carbon fixation pathways in prokaryotes |
| Biosynthesis of plant secondary metabolites |
| Biosynthesis of phenylpropanoids |
| Biosynthesis of terpenoids and steroids |
| Biosynthesis of alkaloids derived from shikimate pathway |
| Biosynthesis of plant hormones |
| Metabolic pathways |
| Biosynthesis of secondary metabolites |
| Microbial metabolism in diverse environments |
| Biosynthesis of amino acids |
| Phosphotransferase system (PTS) |
| Proximal tubule bicarbonate reclamation |