Transport Reaction 157 Aminobenzoate degradation 6 Atrazine degradation 3 Benzoate degradation 12 Chloroalkane and chloroalkene degradation 1 Chlorocyclohexane and chlorobenzene degradation 1 Naphthalene degradation 1 Styrene degradation 3 Peroxisome 34 Aminoacyl-tRNA biosynthesis 20 Purine metabolism 71 Pyrimidine metabolism 30 Terpenoid backbone biosynthesis 10 Sesquiterpenoid and triterpenoid biosynthesis 1 Carotenoid biosynthesis 1 Cyanoamino acid metabolism 9 Glutathione metabolism 9 Taurine and hypotaurine metabolism 2 beta-Alanine metabolism 2 Selenocompound metabolism 2 Nicotinate and nicotinamide metabolism 13 Pantothenate and CoA biosynthesis 11 Biotin metabolism 4 One carbon pool by folate 15 Folate biosynthesis 7 Porphyrin and chlorophyll metabolism 10 Riboflavin metabolism 5 Thiamine metabolism 5 Ubiquinone and other terpenoid-quinone biosynthesis 2 Vitamin B6 metabolism 2 Biosynthesis of unsaturated fatty acids 8 Fatty acid biosynthesis 149 Fatty acid degradation 41 Synthesis and degradation of ketone bodies 4 Fatty acid elongation 46 Glycerolipid metabolism 25 Glycerophospholipid metabolism 37 Sphingolipid metabolism 22 Steroid biosynthesis 10 Other glycan degradation 1 Glycosylphosphatidylinositol (GPI)-anchor biosynthesis 1 Other types of O-glycan biosynthesis 6 Various types of N-glycan biosynthesis 6 Nitrogen metabolism 5 Carbon fixation in photosynthetic organisms 17 Methane metabolism 19 Carbon fixation pathways in prokaryotes 21 Sulfur metabolism 5 Oxidative phosphorylation 2 Amino sugar and nucleotide sugar metabolism 22 Butanoate metabolism 14 Glyoxylate and dicarboxylate metabolism 20 Ascorbate and aldarate metabolism 3 Inositol phosphate metabolism 6 Citrate cycle (TCA cycle) 15 Propanoate metabolism 8 Pyruvate metabolism 33 Starch and sucrose metabolism 16 Fructose and mannose metabolism 14 Galactose metabolism 15 Glycolysis / Gluconeogenesis 35 Pentose phosphate pathway 16 Pentose and glucuronate interconversions 19 Carbapenem biosynthesis 1 Aflatoxin biosynthesis 1 Prodigiosin biosynthesis 1 Monobactam biosynthesis 2 Tropane, piperidine and pyridine alkaloid biosynthesis 4 Phenylpropanoid biosynthesis 1 Streptomycin biosynthesis 4 Neomycin, kanamycin and gentamicin biosynthesis 1 Isoquinoline alkaloid biosynthesis 1 Novobiocin biosynthesis 1 Glucosinolate biosynthesis 2 Alanine, aspartate and glutamate metabolism 26 Arginine and proline metabolism 15 Tyrosine metabolism 7 Arginine biosynthesis 22 Cysteine and methionine metabolism 18 Tryptophan metabolism 9 Lysine degradation 9 Valine, leucine and isoleucine degradation 18 Glycine, serine and threonine metabolism 25 Lysine biosynthesis 12 Phenylalanine, tyrosine and tryptophan biosynthesis 20 Valine, leucine and isoleucine biosynthesis 12 Histidine metabolism 10 Phenylalanine metabolism 4 Other 50 Exchange Reaction 86