KEGG Modules

Carbohydrate metabolism
Central carbohydrate metabolism
M00001 Glycolysis (Embden-Meyerhof pathway), glucose => pyruvate
M00002 Glycolysis, core module involving three-carbon compounds
M00011 Citrate cycle, second carbon oxidation, 2-oxoglutarate => oxaloacetate
M00004 Pentose phosphate pathway (Pentose phosphate cycle)
M00006 Pentose phosphate pathway, oxidative phase, glucose-6P => ribulose-5P
M00007 Pentose phosphate pathway, non-oxidative phase, fructose-6P => ribose-5P
M00580 Pentose phosphate pathway, archaea, fructose-6P => ribose-5P
M00005 PRPP biosynthesis, ribose-5P => PRPP

Other carbohydrate metabolism
M00631 Galacturonate degradation, bacteria, galacturonate => pyruvate + glyceraldehyde-3P
M00632 Galactose degradation, Leloir pathway, galactose => alpha-D-glucose-1P
M00854 Glycogen biosynthesis, glucose-1P => glycogen/starch
M00982 Methylcitrate cycle

Energy metabolism
Carbon fixation
M00168 CAM (Crassulacean acid metabolism), dark
M00579 Phosphate acetyltransferase-acetate kinase pathway, acetyl-CoA => acetate

Methane metabolism
M00345 Formaldehyde assimilation, ribulose monophosphate pathway

Nitrogen metabolism
M00531 Assimilatory nitrate reduction, nitrate => ammonia

Sulfur metabolism
M00176 Assimilatory sulfate reduction, sulfate => H2S

ATP synthesis
M00151 Cytochrome bc1 complex respiratory unit
M00155 Cytochrome c oxidase, prokaryotes
M00157 F-type ATPase, prokaryotes and chloroplasts

Lipid metabolism
Fatty acid metabolism
M00082 Fatty acid biosynthesis, initiation
M00083 Fatty acid biosynthesis, elongation
M00086 beta-Oxidation, acyl-CoA synthesis

Lipid metabolism
M00093 Phosphatidylethanolamine (PE) biosynthesis, PA => PS => PE

Nucleotide metabolism
Purine metabolism
M00048 De novo purine biosynthesis, PRPP + glutamine => IMP
M00049 Adenine ribonucleotide biosynthesis, IMP => ADP,ATP
M00050 Guanine ribonucleotide biosynthesis, IMP => GDP,GTP
M00053 Deoxyribonucleotide biosynthesis, ADP/GDP/CDP/UDP => dATP/dGTP/dCTP/dUTP

Pyrimidine metabolism
M00938 Pyrimidine deoxyribonucleotide biosynthesis, UDP => dTTP
M00046 Pyrimidine degradation, uracil => beta-alanine, thymine => 3-aminoisobutanoate

Amino acid metabolism
Serine and threonine metabolism
M00020 Serine biosynthesis, glycerate-3P => serine
M00018 Threonine biosynthesis, aspartate => homoserine => threonine
M00621 Glycine cleavage system

Cysteine and methionine metabolism
M00021 Cysteine biosynthesis, serine => cysteine
M00017 Methionine biosynthesis, aspartate => homoserine => methionine
M00034 Methionine salvage pathway

Branched-chain amino acid metabolism
M00019 Valine/isoleucine biosynthesis, pyruvate => valine / 2-oxobutanoate => isoleucine
M00570 Isoleucine biosynthesis, threonine => 2-oxobutanoate => isoleucine
M00432 Leucine biosynthesis, 2-oxoisovalerate => 2-oxoisocaproate

Lysine metabolism
M00526 Lysine biosynthesis, DAP dehydrogenase pathway, aspartate => lysine

Arginine and proline metabolism
M00028 Ornithine biosynthesis, glutamate => ornithine
M00844 Arginine biosynthesis, ornithine => arginine
M00015 Proline biosynthesis, glutamate => proline
M00970 Proline degradation, proline => glutamate
M00972 Proline metabolism

Polyamine biosynthesis
M00133 Polyamine biosynthesis, arginine => agmatine => putrescine => spermidine
M00135 GABA biosynthesis, eukaryotes, putrescine => GABA

Histidine metabolism
M00026 Histidine biosynthesis, PRPP => histidine
M00045 Histidine degradation, histidine => N-formiminoglutamate => glutamate

Aromatic amino acid metabolism
M00022 Shikimate pathway, phosphoenolpyruvate + erythrose-4P => chorismate

Glycan metabolism
Nucleotide sugar biosynthesis
M00549 UDP-Glc biosynthesis, Glc => UDP-Glc
M00999 UDP-GlcA/GalA biosynthesis, UDP-Glc => UDP-GlcA => UDP-GalA
M00554 UDP-Gal biosynthesis, Gal => UDP-Gal
M01000 GDP-Man biosynthesis, Fru-6P => GDP-Man
M01014 UDP-ManNAcA biosynthesis, UDP-GlcNAc => UDP-ManNAcA
M00793 dTDP-L-Rha biosynthesis, Glc-1P => dTDP-L-Rha

Metabolism of cofactors and vitamins
Cofactor and vitamin metabolism
M00899 Thiamine salvage pathway, HMP/HET => TMP
M00916 Pyridoxal phosphate biosynthesis, R5P + glyceraldehyde-3P + glutamine => pyridoxal-P
M00115 NAD biosynthesis, aspartate => quinolinate => NAD
M00119 Pantothenate biosynthesis, valine/L-aspartate => pantothenate
M00120 Coenzyme A biosynthesis, pantothenate => CoA
M00881 Lipoic acid biosynthesis, plants and bacteria, octanoyl-ACP => dihydrolipoyl-E2/H
M00126 Tetrahydrofolate biosynthesis, GTP => THF
M00988 PreQ1 biosynthesis, GTP => 7-Aminomethyl-7-deazaguanine
M00926 Heme biosynthesis, bacteria, glutamyl-tRNA => coproporphyrin III => heme

Biosynthesis of terpenoids and polyketides
Terpenoid backbone biosynthesis
M00096 C5 isoprenoid biosynthesis, non-mevalonate pathway
M00364 C10-C20 isoprenoid biosynthesis, bacteria

Gene set
Drug resistance
M00704 Tetracycline resistance, efflux pump Tet38
M00700 Multidrug resistance, efflux pump AbcA
M00705 Multidrug resistance, efflux pump MepA

Module set
Metabolic capacity
M00615 Nitrate assimilation
M00616 Sulfate-sulfur assimilation