| Pathway | #Steps | #Present | #Specific |
|---|
| benzoyl-CoA biosynthesis | 3 | 3 | 3 |
| 4-aminobutanoate degradation III | 2 | 2 | 2 |
| NADP biosynthesis | 1 | 1 | 1 |
| L-aspartate degradation I | 1 | 1 | 1 |
| L-aspartate biosynthesis | 1 | 1 | 1 |
| glycine biosynthesis III | 1 | 1 | 1 |
| fatty acid β-oxidation III (unsaturated, odd number) | 1 | 1 | 1 |
| siroheme biosynthesis | 4 | 4 | 3 |
| fatty acid β-oxidation I (generic) | 7 | 6 | 5 |
| oleate β-oxidation | 35 | 32 | 24 |
| L-isoleucine degradation I | 6 | 5 | 4 |
| valproate β-oxidation | 9 | 6 | 6 |
| propanoate fermentation to 2-methylbutanoate | 6 | 4 | 4 |
| 2-methyl-branched fatty acid β-oxidation | 14 | 11 | 9 |
| fatty acid β-oxidation IV (unsaturated, even number) | 5 | 3 | 3 |
| fatty acid β-oxidation II (plant peroxisome) | 5 | 3 | 3 |
| glutaryl-CoA degradation | 5 | 3 | 3 |
| pyruvate fermentation to hexanol (engineered) | 11 | 7 | 6 |
| fatty acid salvage | 6 | 6 | 3 |
| oleate β-oxidation (thioesterase-dependent, yeast) | 2 | 2 | 1 |
| phosphatidylserine and phosphatidylethanolamine biosynthesis I | 2 | 2 | 1 |
| malate/L-aspartate shuttle pathway | 2 | 2 | 1 |
| glycerol-3-phosphate shuttle | 2 | 2 | 1 |
| glycerophosphodiester degradation | 2 | 2 | 1 |
| glutathione degradation (DUG pathway) | 2 | 2 | 1 |
| tetrahydropteridine recycling | 2 | 2 | 1 |
| β-alanine degradation II | 2 | 2 | 1 |
| NAD phosphorylation and transhydrogenation | 2 | 2 | 1 |
| glycerol-3-phosphate to fumarate electron transfer | 2 | 2 | 1 |
| L-valine degradation I | 8 | 7 | 4 |
| pyruvate fermentation to butanol II (engineered) | 6 | 5 | 3 |
| L-serine biosynthesis II | 4 | 2 | 2 |
| 4-aminobutanoate degradation I | 2 | 1 | 1 |
| indole-3-acetate biosynthesis III (bacteria) | 2 | 1 | 1 |
| L-homocysteine biosynthesis | 2 | 1 | 1 |
| glycerol-3-phosphate to hydrogen peroxide electron transport | 2 | 1 | 1 |
| acrylonitrile degradation I | 2 | 1 | 1 |
| 4-aminobutanoate degradation II | 2 | 1 | 1 |
| indole-3-acetate biosynthesis IV (bacteria) | 2 | 1 | 1 |
| 2-O-α-mannosyl-D-glycerate degradation | 2 | 1 | 1 |
| nitrate reduction IX (dissimilatory) | 2 | 1 | 1 |
| L-lactaldehyde degradation (aerobic) | 2 | 1 | 1 |
| glycerol 3-phosphate to cytochrome aa3 oxidase electron transfer | 2 | 1 | 1 |
| L-glutamate degradation II | 2 | 1 | 1 |
| acetoacetate degradation (to acetyl CoA) | 2 | 1 | 1 |
| glycerol-3-phosphate to cytochrome bo oxidase electron transfer | 2 | 1 | 1 |
| (8E,10E)-dodeca-8,10-dienol biosynthesis | 11 | 6 | 5 |
| factor 430 biosynthesis | 7 | 3 | 3 |
| pyruvate fermentation to butanoate | 7 | 3 | 3 |
| fatty acid β-oxidation VI (mammalian peroxisome) | 7 | 3 | 3 |
| (R)- and (S)-3-hydroxybutanoate biosynthesis (engineered) | 5 | 5 | 2 |
| adipate degradation | 5 | 4 | 2 |
| 5,6-dehydrokavain biosynthesis (engineered) | 10 | 6 | 4 |
| adipate biosynthesis | 5 | 3 | 2 |
| 9-cis, 11-trans-octadecadienoyl-CoA degradation (isomerase-dependent, yeast) | 10 | 4 | 4 |
| fatty acid β-oxidation V (unsaturated, odd number, di-isomerase-dependent) | 5 | 2 | 2 |
| L-lysine degradation IV | 5 | 2 | 2 |
| 4-hydroxybenzoate biosynthesis III (plants) | 5 | 2 | 2 |
| pyruvate fermentation to butanol I | 8 | 4 | 3 |
| L-phenylalanine degradation V | 3 | 3 | 1 |
| L-serine biosynthesis I | 3 | 3 | 1 |
| sn-glycerol 3-phosphate anaerobic respiration | 3 | 3 | 1 |
| methylglyoxal degradation V | 3 | 2 | 1 |
| NAD phosphorylation and dephosphorylation | 3 | 2 | 1 |
| glycerol degradation I | 3 | 2 | 1 |
| L-asparagine degradation III (mammalian) | 3 | 2 | 1 |
| ketolysis | 3 | 2 | 1 |
| L-cysteine biosynthesis IX (Trichomonas vaginalis) | 3 | 2 | 1 |
| polyhydroxybutanoate biosynthesis | 3 | 2 | 1 |
| superpathway of Clostridium acetobutylicum acidogenic fermentation | 9 | 5 | 3 |
| methyl ketone biosynthesis (engineered) | 6 | 3 | 2 |
| benzoate biosynthesis I (CoA-dependent, β-oxidative) | 9 | 3 | 3 |
| L-lysine degradation X | 6 | 2 | 2 |
| superpathway of L-cysteine biosynthesis (fungi) | 6 | 2 | 2 |
| roxarsone (and nitarsone) degradation IV | 6 | 2 | 2 |
| L-lysine degradation III | 6 | 2 | 2 |
| superpathway of 4-aminobutanoate degradation | 3 | 1 | 1 |
| (R)-cysteate degradation | 3 | 1 | 1 |
| oleate β-oxidation (reductase-dependent, yeast) | 3 | 1 | 1 |
| methylglyoxal degradation IV | 3 | 1 | 1 |
| superpathway of acrylonitrile degradation | 3 | 1 | 1 |
| L-arginine degradation X (arginine monooxygenase pathway) | 3 | 1 | 1 |
| sulfolactate degradation III | 3 | 1 | 1 |
| L-glutamate degradation V (via hydroxyglutarate) | 10 | 5 | 3 |
| 3-phenylpropanoate degradation | 10 | 4 | 3 |
| superpathway of glyoxylate cycle and fatty acid degradation | 14 | 11 | 4 |
| benzoyl-CoA degradation I (aerobic) | 7 | 2 | 2 |
| L-lysine degradation I | 7 | 2 | 2 |
| superpathway of L-serine and glycine biosynthesis I | 4 | 4 | 1 |
| putrescine degradation II | 4 | 3 | 1 |
| glycolate and glyoxylate degradation I | 4 | 3 | 1 |
| glycerol and glycerophosphodiester degradation | 4 | 3 | 1 |
| GABA shunt II | 4 | 3 | 1 |
| superpathway of L-aspartate and L-asparagine biosynthesis | 4 | 3 | 1 |
| L-methionine biosynthesis III | 4 | 3 | 1 |
| 2-deoxy-D-ribose degradation II | 8 | 4 | 2 |
| D-galactarate degradation I | 4 | 2 | 1 |
| cardiolipin and phosphatidylethanolamine biosynthesis (Xanthomonas) | 4 | 2 | 1 |
| (2S)-ethylmalonyl-CoA biosynthesis | 4 | 2 | 1 |
| D-glucarate degradation I | 4 | 2 | 1 |
| GABA shunt I | 4 | 2 | 1 |
| L-glutamate degradation VII (to butanoate) | 12 | 4 | 3 |
| 2-methylpropene degradation | 8 | 2 | 2 |
| homocysteine and cysteine interconversion | 4 | 1 | 1 |
| oleate β-oxidation (isomerase-dependent, yeast) | 4 | 1 | 1 |
| formaldehyde assimilation I (serine pathway) | 13 | 8 | 3 |
| superpathway of Clostridium acetobutylicum solventogenic fermentation | 13 | 6 | 3 |
| superpathway of L-methionine biosynthesis (transsulfuration) | 9 | 8 | 2 |
| photorespiration III | 9 | 7 | 2 |
| photorespiration I | 9 | 7 | 2 |
| phenylacetate degradation I (aerobic) | 9 | 2 | 2 |
| L-ornithine biosynthesis I | 5 | 5 | 1 |
| 2-methylcitrate cycle I | 5 | 5 | 1 |
| photorespiration II | 10 | 8 | 2 |
| L-methionine biosynthesis I | 5 | 4 | 1 |
| superpathway of sulfur amino acid biosynthesis (Saccharomyces cerevisiae) | 10 | 6 | 2 |
| mitochondrial NADPH production (yeast) | 5 | 3 | 1 |
| cytosolic NADPH production (yeast) | 5 | 3 | 1 |
| ketogenesis | 5 | 2 | 1 |
| superpathway of D-glucarate and D-galactarate degradation | 5 | 2 | 1 |
| lactate biosynthesis (archaea) | 5 | 2 | 1 |
| androstenedione degradation I (aerobic) | 25 | 6 | 5 |
| L-tryptophan degradation III (eukaryotic) | 15 | 3 | 3 |
| cob(II)yrinate a,c-diamide biosynthesis I (early cobalt insertion) | 15 | 3 | 3 |
| methyl tert-butyl ether degradation | 10 | 2 | 2 |
| fatty acid β-oxidation VII (yeast peroxisome) | 5 | 1 | 1 |
| ethylbenzene degradation (anaerobic) | 5 | 1 | 1 |
| S-methyl-5-thio-α-D-ribose 1-phosphate degradation II | 5 | 1 | 1 |
| S-methyl-5-thio-α-D-ribose 1-phosphate degradation III | 5 | 1 | 1 |
| pyruvate fermentation to acetone | 5 | 1 | 1 |
| benzoate biosynthesis III (CoA-dependent, non-β-oxidative) | 5 | 1 | 1 |
| isopropanol biosynthesis (engineered) | 5 | 1 | 1 |
| glycerol degradation to butanol | 16 | 10 | 3 |
| crotonate fermentation (to acetate and cyclohexane carboxylate) | 16 | 3 | 3 |
| superpathway of L-arginine, putrescine, and 4-aminobutanoate degradation | 11 | 6 | 2 |
| superpathway of phenylethylamine degradation | 11 | 3 | 2 |
| superpathway of testosterone and androsterone degradation | 28 | 6 | 5 |
| superpathway of Clostridium acetobutylicum acidogenic and solventogenic fermentation | 17 | 8 | 3 |
| peptido-conjugates in tissue regeneration biosynthesis | 17 | 6 | 3 |
| benzoate fermentation (to acetate and cyclohexane carboxylate) | 17 | 3 | 3 |
| glyoxylate cycle | 6 | 6 | 1 |
| superpathway of L-threonine biosynthesis | 6 | 6 | 1 |
| superpathway of L-methionine biosynthesis (by sulfhydrylation) | 12 | 11 | 2 |
| TCA cycle VIII (Chlamydia) | 6 | 5 | 1 |
| L-leucine degradation I | 6 | 5 | 1 |
| 2-methylcitrate cycle II | 6 | 5 | 1 |
| L-methionine biosynthesis II | 6 | 5 | 1 |
| β-alanine biosynthesis II | 6 | 4 | 1 |
| γ-glutamyl cycle | 6 | 4 | 1 |
| NAD(P)/NADPH interconversion | 6 | 3 | 1 |
| 3-hydroxypropanoate/4-hydroxybutanate cycle | 18 | 7 | 3 |
| superpathway of sulfolactate degradation | 6 | 2 | 1 |
| 6-gingerol analog biosynthesis (engineered) | 6 | 2 | 1 |
| leukotriene biosynthesis | 6 | 2 | 1 |
| superpathway of cholesterol degradation I (cholesterol oxidase) | 42 | 8 | 7 |
| toluene degradation VI (anaerobic) | 18 | 3 | 3 |
| 10-cis-heptadecenoyl-CoA degradation (yeast) | 12 | 2 | 2 |
| 10-trans-heptadecenoyl-CoA degradation (reductase-dependent, yeast) | 12 | 2 | 2 |
| 10-trans-heptadecenoyl-CoA degradation (MFE-dependent, yeast) | 6 | 1 | 1 |
| 4-ethylphenol degradation (anaerobic) | 6 | 1 | 1 |
| coenzyme M biosynthesis II | 6 | 1 | 1 |
| jasmonic acid biosynthesis | 19 | 4 | 3 |
| superpathway of L-arginine and L-ornithine degradation | 13 | 8 | 2 |
| (4Z,7Z,10Z,13Z,16Z)-docosapentaenoate biosynthesis (6-desaturase) | 13 | 2 | 2 |
| cob(II)yrinate a,c-diamide biosynthesis II (late cobalt incorporation) | 13 | 2 | 2 |
| superpathway of cholesterol degradation II (cholesterol dehydrogenase) | 47 | 8 | 7 |
| androstenedione degradation II (anaerobic) | 27 | 4 | 4 |
| superpathway of glycol metabolism and degradation | 7 | 5 | 1 |
| anaerobic energy metabolism (invertebrates, cytosol) | 7 | 5 | 1 |
| acetyl-CoA fermentation to butanoate | 7 | 4 | 1 |
| 4-aminobutanoate degradation V | 7 | 2 | 1 |
| docosahexaenoate biosynthesis III (6-desaturase, mammals) | 14 | 2 | 2 |
| mevalonate pathway II (haloarchaea) | 7 | 1 | 1 |
| mevalonate pathway I (eukaryotes and bacteria) | 7 | 1 | 1 |
| Spodoptera littoralis pheromone biosynthesis | 22 | 4 | 3 |
| superpathway of L-homoserine and L-methionine biosynthesis | 8 | 7 | 1 |
| superpathway of ornithine degradation | 8 | 6 | 1 |
| superpathway of NAD/NADP - NADH/NADPH interconversion (yeast) | 8 | 5 | 1 |
| superpathway of methylglyoxal degradation | 8 | 4 | 1 |
| L-rhamnose degradation II | 8 | 2 | 1 |
| mevalonate pathway IV (archaea) | 8 | 1 | 1 |
| mevalonate pathway III (Thermoplasma) | 8 | 1 | 1 |
| isoprene biosynthesis II (engineered) | 8 | 1 | 1 |
| cholesterol degradation to androstenedione I (cholesterol oxidase) | 17 | 2 | 2 |
| platensimycin biosynthesis | 26 | 6 | 3 |
| superpathway of sulfate assimilation and cysteine biosynthesis | 9 | 9 | 1 |
| L-arginine biosynthesis I (via L-ornithine) | 9 | 9 | 1 |
| superpathway of L-lysine, L-threonine and L-methionine biosynthesis I | 18 | 17 | 2 |
| superpathway of S-adenosyl-L-methionine biosynthesis | 9 | 8 | 1 |
| L-arginine biosynthesis III (via N-acetyl-L-citrulline) | 9 | 8 | 1 |
| 1-butanol autotrophic biosynthesis (engineered) | 27 | 21 | 3 |
| Entner-Doudoroff pathway II (non-phosphorylative) | 9 | 5 | 1 |
| 4-oxopentanoate degradation | 9 | 2 | 1 |
| L-arginine biosynthesis II (acetyl cycle) | 10 | 9 | 1 |
| superpathway of coenzyme A biosynthesis II (plants) | 10 | 8 | 1 |
| superpathway of geranylgeranyldiphosphate biosynthesis I (via mevalonate) | 10 | 4 | 1 |
| L-lysine fermentation to acetate and butanoate | 10 | 3 | 1 |
| C4 photosynthetic carbon assimilation cycle, NAD-ME type | 11 | 8 | 1 |
| gallate degradation III (anaerobic) | 11 | 3 | 1 |
| ethylmalonyl-CoA pathway | 11 | 2 | 1 |
| cholesterol degradation to androstenedione II (cholesterol dehydrogenase) | 22 | 2 | 2 |
| superpathway of phospholipid biosynthesis III (E. coli) | 12 | 10 | 1 |
| superpathway of glyoxylate bypass and TCA | 12 | 10 | 1 |
| adenosylcobalamin biosynthesis I (anaerobic) | 36 | 18 | 3 |
| superpathway of fucose and rhamnose degradation | 12 | 3 | 1 |
| indole-3-acetate biosynthesis II | 12 | 3 | 1 |
| superpathway of cholesterol degradation III (oxidase) | 49 | 4 | 4 |
| aspartate superpathway | 25 | 23 | 2 |
| superpathway of L-isoleucine biosynthesis I | 13 | 13 | 1 |
| photosynthetic 3-hydroxybutanoate biosynthesis (engineered) | 26 | 21 | 2 |
| superpathway of cardiolipin biosynthesis (bacteria) | 13 | 8 | 1 |
| C4 photosynthetic carbon assimilation cycle, PEPCK type | 14 | 9 | 1 |
| hypoglycin biosynthesis | 14 | 4 | 1 |
| superpathway of L-lysine degradation | 43 | 8 | 3 |
| superpathway of L-lysine, L-threonine and L-methionine biosynthesis II | 15 | 13 | 1 |
| adenosylcobalamin biosynthesis II (aerobic) | 33 | 19 | 2 |
| superpathway of arginine and polyamine biosynthesis | 17 | 13 | 1 |
| superpathway of anaerobic energy metabolism (invertebrates) | 17 | 10 | 1 |
| nicotine degradation I (pyridine pathway) | 17 | 4 | 1 |
| sitosterol degradation to androstenedione | 18 | 1 | 1 |
| superpathway of glycolysis, pyruvate dehydrogenase, TCA, and glyoxylate bypass | 26 | 22 | 1 |
| superpathway of ergosterol biosynthesis I | 26 | 3 | 1 |
| Methanobacterium thermoautotrophicum biosynthetic metabolism | 56 | 22 | 2 |
| superpathway of phospholipid biosynthesis II (plants) | 28 | 10 | 1 |
| superpathway of microbial D-galacturonate and D-glucuronate degradation | 31 | 6 | 1 |
| superpathway of cholesterol biosynthesis | 38 | 3 | 1 |