• KEGG module
  • Energy metabolism 
    • Carbon fixation 
      • M00165 Reductive pentose phosphate cycle (Calvin cycle)
      • M00166 Reductive pentose phosphate cycle, ribulose-5P => glyceraldehyde-3P
      • M00167 Reductive pentose phosphate cycle, glyceraldehyde-3P => ribulose-5P
      • M00168 CAM (Crassulacean acid metabolism), dark
      • M00169 CAM (Crassulacean acid metabolism), light
      • M00172 C4-dicarboxylic acid cycle, NADP - malic enzyme type
      • M00171 C4-dicarboxylic acid cycle, NAD - malic enzyme type
      • M00170 C4-dicarboxylic acid cycle, phosphoenolpyruvate carboxykinase type
      • M00173 Reductive citrate cycle (Arnon-Buchanan cycle)
      • M00579 Phosphate acetyltransferase-acetate kinase pathway, acetyl-CoA => acetate
    • Nitrogen metabolism 
      • M00175 Nitrogen fixation, nitrogen => ammonia
    • Methane metabolism 
      • M00567 Methanogenesis, CO2 => methane
      • M00174 Methane oxidation, methanotroph, methane => formaldehyde
    • Sulfur metabolism 
      • M00176 Assimilatory sulfate reduction, sulfate => H2S
  • Carbohydrate and lipid metabolism 
    • Central carbohydrate metabolism 
      • M00001 Glycolysis (Embden-Meyerhof pathway), glucose => pyruvate
      • M00002 Glycolysis, core module involving three-carbon compounds
      • M00003 Gluconeogenesis, oxaloacetate => fructose-6P
      • M00307 Pyruvate oxidation, pyruvate => acetyl-CoA
      • M00009 Citrate cycle (TCA cycle, Krebs cycle)
      • M00010 Citrate cycle, first carbon oxidation, oxaloacetate => 2-oxoglutarate
      • 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
      • M00008 Entner-Doudoroff pathway, glucose-6P => glyceraldehyde-3P + pyruvate
      • M00308 Semi-phosphorylative Entner-Doudoroff pathway, gluconate => glyceraldehyde-3P + pyruvate
      • M00309 Non-phosphorylative Entner-Doudoroff pathway, gluconate => glyceraldehyde + pyruvate
    • Other carbohydrate metabolism 
      • M00012 Glyoxylate cycle
      • M00013 Malonate semialdehyde pathway, propanoyl-CoA => Acetyl-CoA
      • M00014 Glucuronate pathway (uronate pathway)
      • M00061 Uronic acid metabolism
      • M00081 Pectin degradation
    • Fatty acid metabolism 
      • M00082 Fatty acid biosynthesis, initiation
      • M00083 Fatty acid biosynthesis, elongation
      • M00113 Jasmonic acid biosynthesis
      • M00086 beta-Oxidation, acyl-CoA synthesis
      • M00087 beta-Oxidation
      • M00088 Ketone body biosynthesis, acetyl-CoA => acetoacetate/3-hydroxybutyrate/acetone
    • Lipid metabolism 
      • M00089 Triacylglycerol biosynthesis
      • M00098 Acylglycerol degradation
      • M00090 Phosphatidylcholine (PC) biosynthesis, choline => PC
      • M00091 Phosphatidylcholine (PC) biosynthesis, PE => PC
      • M00092 Phosphatidylethanolamine (PE) biosynthesis, ethanolamine => PE
      • M00093 Phosphatidylethanolamine (PE) biosynthesis, PA => PS => PE
      • M00130 Inositol phosphate metabolism, PI=> PIP2 => Ins(1,4,5)P3 => Ins(1,3,4,5)P4
      • M00131 Inositol phosphate metabolism, Ins(1,3,4,5)P4 => Ins(1,3,4)P3 => myo-inositol
      • M00132 Inositol phosphate metabolism, Ins(1,3,4)P3 => phytate
      • M00094 Ceramide biosynthesis
      • M00066 Lactosylceramide biosynthesis
      • M00067 Cerebroside and sulfatide biosynthesis
      • M00099 Sphingosine biosynthesis
      • M00100 Sphingosine degradation
    • Lipopolysaccharide metabolism 
      • M00060 Lipopolysaccharide biosynthesis, KDO2-lipid A
      • M00063 CMP-KDO biosynthesis
      • M00064 ADP-L-glycero-D-manno-heptose biosynthesis
      • M00080 Lipopolysaccharide biosynthesis, inner core => outer core => O-antigen
    • Sugar metabolism 
      • M00549 Nucleotide sugar biosynthesis, glucose => UDP-glucose
      • M00554 Nucleotide sugar biosynthesis, galactose => UDP-galactose
      • M00565 Trehalose biosynthesis, D-glucose 1P => trehalose
    • Glycan metabolism 
      • M00055 N-glycan precursor biosynthesis
      • M00073 N-glycan precursor trimming
      • M00074 N-glycan biosynthesis, high-mannose type
      • M00075 N-glycan biosynthesis, complex type
      • M00056 O-glycan biosynthesis, mucin type core
      • M00070 Glycosphingolipid biosynthesis, lacto-series, LacCer => Lc4Cer
      • M00071 Glycosphingolipid biosynthesis, neolacto-series, LacCer => nLc4Cer
      • M00068 Glycosphingolipid biosynthesis, globo-series, LacCer => Gb4Cer
      • M00069 Glycosphingolipid biosynthesis, ganglio series, LacCer => GT3
      • M00065 GPI-anchor biosynthesis, core oligosaccharide
    • Glycosaminoglycan metabolism 
      • M00057 Glycosaminoglycan biosynthesis, linkage tetrasaccharide
      • M00058 Glycosaminoglycan biosynthesis, chondroitin sulfate backbone
      • M00059 Glycosaminoglycan biosynthesis, heparan sulfate backbone
      • M00076 Dermatan sulfate degradation
      • M00077 Chondroitin sulfate degradation
      • M00078 Heparan sulfate degradation
      • M00079 Keratan sulfate degradation
    • Terpenoid backbone biosynthesis 
      • M00095 C5 isoprenoid biosynthesis, mevalonate pathway
      • M00096 C5 isoprenoid biosynthesis, non-mevalonate pathway
      • M00364 C10-C20 isoprenoid biosynthesis, bacteria
      • M00365 C10-C20 isoprenoid biosynthesis, archaea
      • M00366 C10-C20 isoprenoid biosynthesis, plants
      • M00367 C10-C20 isoprenoid biosynthesis, non-plant eukaryotes
    • Sterol biosynthesis 
      • M00101 Cholesterol biosynthesis, squalene 2,3-epoxide => cholesterol
      • M00102 Ergocalciferol biosynthesis
      • M00103 Cholecalciferol biosynthesis
      • M00104 Bile acid biosynthesis, cholesterol => cholate
      • M00106 Conjugated bile acid biosynthesis, cholate => taurocholate/glycocholate
      • M00107 Steroid hormone biosynthesis, cholesterol => prognenolone => progesterone
      • M00108 C21-Steroid hormone biosynthesis, progesterone => corticosterone/aldosterone
      • M00109 C21-Steroid hormone biosynthesis, progesterone => cortisol/cortisone
      • M00110 C19/C18-Steroid hormone biosynthesis, pregnenolone => androstenedione => estrone
    • Other terpenoid biosynthesis 
      • M00097 beta-Carotene biosynthesis, GGAP => beta-carotene
  • Nucleotide and amino acid metabolism 
    • Purine metabolism 
      • M00048 Inosine monophosphate biosynthesis, PRPP + glutamine => IMP
      • M00049 Adenine ribonucleotide biosynthesis, IMP => ADP,ATP
      • M00050 Guanine ribonucleotide biosynthesis IMP => GDP,GTP
      • M00546 Purine degradation, xanthine => urea
    • Pyrimidine metabolism 
      • M00051 Uridine monophosphate biosynthesis, glutamine (+ PRPP) => UMP
      • M00052 Pyrimidine ribonucleotide biosynthesis, UMP => UDP/UTP,CDP/CTP
      • M00053 Pyrimidine deoxyribonuleotide biosynthesis, CDP/CTP => dCDP/dCTP,dTDP/dTTP
      • M00046 Pyrimidine degradation, uracil => beta-alanine, thymine => 3-aminoisobutanoate
    • Serine and threonine metabolism 
      • M00020 Serine biosynthesis, glycerate-3P => serine
      • M00018 Threonine biosynthesis, aspartate => homoserine => threonine
      • M00555 Betaine biosynthesis, choline => betaine
    • Cysteine and methionine metabolism 
      • M00021 Cysteine biosynthesis, serine => cysteine
      • M00338 Cysteine biosynthesis, homocysteine + serine => cysteine
      • M00017 Methionine biosynthesis, apartate => homoserine => methionine
      • M00034 Methionine salvage pathway
      • M00035 Methionine degradation
    • Branched-chain amino acid metabolism 
      • M00019 Valine/isoleucine biosynthesis, pyruvate => valine / 2-oxobutanoate => isoleucine
      • M00535 Isoleucine biosynthesis, pyruvate => 2-oxobutanoate
      • M00570 Isoleucine biosynthesis, threonine => 2-oxobutanoate => isoleucine
      • M00432 Leucine biosynthesis, 2-oxoisovalerate => 2-oxoisocaproate
      • M00036 Leucine degradation, leucine => acetoacetate + acetyl-CoA
    • Lysine metabolism 
      • M00016 Lysine biosynthesis, succinyl-DAP pathway, aspartate => lysine
      • M00030 Lysine biosynthesis, AAA pathway, 2-oxoglutarate => 2-aminoadipate => lysine
      • M00433 Lysine biosynthesis, 2-oxoglutarate => 2-oxoadipate
      • M00031 Lysine biosynthesis, 2-aminoadipate => lysine
      • M00032 Lysine degradation, lysine => saccharopine => acetoacetyl-CoA
    • Arginine and proline metabolism 
      • M00015 Proline biosynthesis, glutamate => proline
      • M00028 Ornithine biosynthesis, glutamate => ornithine
      • M00029 Urea cycle
    • 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
      • M00023 Tryptophan biosynthesis, chorismate => tryptophan
      • M00024 Phenylalanine biosynthesis, chorismate => phenylalanine
      • M00025 Tyrosine biosynthesis, chorismate => tyrosine
      • M00040 Tyrosine biosynthesis, prephanate => pretyrosine => tyrosine
      • M00042 Catecholamine biosynthesis, tyrosine => dopamine => noradrenaline => adrenaline
      • M00043 Thyroid hormone biosynthesis, tyrosine => triiodothyronine/thyroxine
      • M00044 Tyrosine degradation, tyrosine => homogentisate
      • M00350 Capsaicin biosynthesis, L-Phenylalanine => Capsaicin
      • M00037 Melatonin biosynthesis, tryptophan => serotonin => melatonin
      • M00038 Tryptophan metabolism, tryptophan => kynurenine => 2-aminomuconate
    • Other amino acid metabolism 
      • M00027 GABA (gamma-Aminobutyrate) shunt
      • M00047 Creatine pathway
    • Cofactor and vitamin biosynthesis 
      • M00127 Thiamine biosynthesis, AIR => thiamine-P/thiamine-2P
      • M00125 Riboflavin biosynthesis, GTP => riboflavin/FMN/FAD
      • M00124 Pyridoxal biosynthesis, erythrose-4P => pyridoxal-5P
      • M00115 NAD biosynthesis, aspartate => NAD
      • M00119 Pantothenate biosynthesis, valine/L-aspartate => pantothenate
      • M00120 Coenzyme A biosynthesis, pantothenate => CoA
      • M00572 Pimeloyl-ACP biosynthesis, BioC-BioH pathway, malonyl-ACP => pimeloyl-ACP
      • M00123 Biotin biosynthesis, pimeloyl-ACP/CoA => biotin
      • M00573 Biotin biosynthesis, BioI pathway, long-chain-acyl-ACP => pimeloyl-ACP => biotin
      • M00577 Biotin biosynthesis, BioW pathway, pimelate => pimeloyl-CoA => biotin
      • M00126 Tetrahydrofolate biosynthesis, GTP => THF
      • M00121 Heme biosynthesis, glutamate => protoheme/siroheme
      • M00129 Ascorbate biosynthesis, animals, glucose-1P => ascorbate
      • M00114 Ascorbate biosynthesis, plants, glucose-6P => ascorbate
      • M00550 Ascorbate degradation, ascorbate => D-xylulose-5P
      • M00112 Tocopherol biosynthesis
      • M00122 Cobalamin biosynthesis, cobinamide => cobalamin
      • M00117 Ubiquinone biosynthesis, prokaryotes, chorismate => ubiquinone
      • M00128 Ubiquinone biosynthesis, eukaryotes, chorismate => ubiquinone
      • M00116 Menaquinone biosynthesis, chorismate => menaquinone
      • M00118 Glutathione biosynthesis, glutamate => glutathione
      • M00140 C1-unit interconversion, prokaryotes
      • M00141 C1-unit interconversion, eukaryotes
    • Polyamine biosynthesis 
      • M00133 Polyamine biosynthesis, arginine => agmatine => putrescine => spermidine
      • M00134 Polyamine biosynthesis, arginine => ornithine => putrescine
      • M00135 GABA biosynthesis, eukaryotes, putrescine => GABA
      • M00136 GABA biosynthesis, prokaryotes, putrescine => GABA
    • Phenylpropanoid and flavonoid biosynthesis 
      • M00039 Lignin biosynthesis, cinnamate => lignin
      • M00137 Flavonoid biosynthesis, 4-coumaroyl-CoA => naringenin => apigenin
      • M00138 Flavonoid biosynthesis, naringenin => pelargonidin
    • Alkaloid and other secondary metabolite biosynthesis 
      • M00139 Morphine biosynthesis, dopamine => morphine
      • M00033 Ectoine biosynthesis, aspartate => ectoine
  • Secondary metabolism 
    • Aromatics degradataion 
      • M00568 Catechol ortho-cleavage, catechol => 3-oxoadipate
      • M00569 Catechol meta-cleavage, catechol => pyruvate + acetaldehyde
      • M00544 Carbazole degradation, carbazole => 2-oxopent-4-enoate + anthranilate
      • M00541 Benzoyl-CoA degradation, benzoyl-CoA => 3-hydroxypimeloyl-CoA

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