1. Oxidoreductases

 2. Transferases

   2.1  Transferring one-carbon groups

   2.2  Transferring aldehyde or ketonic groups

   2.3  Acyltransferases

   2.4  Glycosyltransferases

   2.5  Transferring alkyl or aryl groups, other than methyl groups

   2.6  Transferring nitrogenous groups

     2.6.1  Transaminases

       2.6.1.1  aspartate transaminase

       2.6.1.2  alanine transaminase

       2.6.1.3  cysteine transaminase

       2.6.1.4  glycine transaminase

       2.6.1.5  tyrosine transaminase

       2.6.1.6  leucine transaminase

       2.6.1.7  kynurenine---oxoglutarate transaminase

       2.6.1.9  histidinol-phosphate transaminase

       2.6.1.11  acetylornithine transaminase

       2.6.1.12  alanine---oxo-acid transaminase

       2.6.1.13  ornithine aminotransferase

       2.6.1.14  asparagine---oxo-acid transaminase

       2.6.1.15  glutamine---pyruvate transaminase

       2.6.1.16  glutamine---fructose-6-phosphate transaminase (isomerizing)

       2.6.1.17  succinyldiaminopimelate transaminase

       2.6.1.18  beta-alanine---pyruvate transaminase

       2.6.1.19  4-aminobutyrate---2-oxoglutarate transaminase

       2.6.1.21  D-amino-acid transaminase

       2.6.1.22  (S)-3-amino-2-methylpropionate transaminase

       2.6.1.23  4-hydroxyglutamate transaminase

       2.6.1.24  diiodotyrosine transaminase

       2.6.1.26  thyroid-hormone transaminase

       2.6.1.27  tryptophan transaminase

       2.6.1.28  tryptophan---phenylpyruvate transaminase

       2.6.1.29  diamine transaminase

       2.6.1.30  pyridoxamine---pyruvate transaminase

       2.6.1.31  pyridoxamine---oxaloacetate transaminase

       2.6.1.32  valine---3-methyl-2-oxovalerate transaminase

       2.6.1.33  dTDP-4-amino-4,6-dideoxy-D-glucose transaminase

       2.6.1.34  UDP-N-acetylbacillosamine transaminase

       2.6.1.35  glycine---oxaloacetate transaminase

       2.6.1.36  L-lysine 6-transaminase

       2.6.1.37  2-aminoethylphosphonate---pyruvate transaminase

       2.6.1.38  histidine transaminase

       2.6.1.39  2-aminoadipate transaminase

       2.6.1.40  (R)-3-amino-2-methylpropionate---pyruvate transaminase

       2.6.1.41  D-methionine---pyruvate transaminase

       2.6.1.42  branched-chain-amino-acid transaminase

       2.6.1.43  aminolevulinate transaminase

       2.6.1.44  alanine---glyoxylate transaminase

       2.6.1.45  serine---glyoxylate transaminase

       2.6.1.46  diaminobutyrate---pyruvate transaminase

       2.6.1.47  alanine---oxomalonate transaminase

       2.6.1.48  5-aminovalerate transaminase

       2.6.1.49  dihydroxyphenylalanine transaminase

       2.6.1.50  glutamine---scyllo-inositol transaminase

       2.6.1.51  serine---pyruvate transaminase

       2.6.1.52  phosphoserine transaminase

       2.6.1.54  pyridoxamine-phosphate transaminase

       2.6.1.55  taurine---2-oxoglutarate transaminase

       2.6.1.56  1D-1-guanidino-3-amino-1,3-dideoxy-scyllo-inositol transaminase

       2.6.1.57  aromatic-amino-acid transaminase

       2.6.1.58  phenylalanine(histidine) transaminase

       2.6.1.59  dTDP-4-amino-4,6-dideoxygalactose transaminase

       2.6.1.60  aromatic-amino-acid---glyoxylate transaminase

       2.6.1.62  adenosylmethionine---8-amino-7-oxononanoate transaminase

       2.6.1.63  kynurenine---glyoxylate transaminase

       2.6.1.64  glutamine---phenylpyruvate transaminase

       2.6.1.65  N6-acetyl-beta-lysine transaminase

       2.6.1.66  valine---pyruvate transaminase

       2.6.1.67  2-aminohexanoate transaminase

       2.6.1.70  aspartate---phenylpyruvate transaminase

       2.6.1.71  lysine---pyruvate 6-transaminase

       2.6.1.72  D-4-hydroxyphenylglycine transaminase

       2.6.1.73  methionine---glyoxylate transaminase

       2.6.1.74  cephalosporin-C transaminase

       2.6.1.75  cysteine-conjugate transaminase

       2.6.1.76  diaminobutyrate---2-oxoglutarate transaminase

       2.6.1.77  taurine---pyruvate aminotransferase

       2.6.1.78  aspartate---prephenate aminotransferase

       2.6.1.79  glutamate---prephenate aminotransferase

       2.6.1.80  nicotianamine aminotransferase

       2.6.1.81  succinylornithine transaminase

       2.6.1.82  putrescine---2-oxoglutarate transaminase

       2.6.1.83  LL-diaminopimelate aminotransferase

       2.6.1.84  arginine---pyruvate transaminase

       2.6.1.85  aminodeoxychorismate synthase

       2.6.1.86  2-amino-4-deoxychorismate synthase

       2.6.1.87  UDP-4-amino-4-deoxy-L-arabinose aminotransferase

       2.6.1.88  methionine transaminase

       2.6.1.89  dTDP-3-amino-3,6-dideoxy-alpha-D-glucopyranose transaminase

       2.6.1.90  dTDP-3-amino-3,6-dideoxy-alpha-D-galactopyranose transaminase

       2.6.1.92  UDP-4-amino-4,6-dideoxy-N-acetyl-beta-L-altrosamine transaminase

       2.6.1.93  neamine transaminase

       2.6.1.94  2'-deamino-2'-hydroxyneamine transaminase

       2.6.1.95  neomycin C transaminase

       2.6.1.96  4-aminobutyrate---pyruvate transaminase

       2.6.1.97  archaeosine synthase

       2.6.1.98  UDP-2-acetamido-2-deoxy-ribo-hexuluronate aminotransferase

       2.6.1.99  L-tryptophan---pyruvate aminotransferase

       2.6.1.100  L-glutamine:2-deoxy-scyllo-inosose aminotransferase

       2.6.1.101  L-glutamine:3-amino-2,3-dideoxy-scyllo-inosose aminotransferase

       2.6.1.102  GDP-perosamine synthase

       2.6.1.103  (S)-3,5-dihydroxyphenylglycine transaminase

       2.6.1.104  3-dehydro-glucose-6-phosphate---glutamate transaminase

       2.6.1.105  lysine---8-amino-7-oxononanoate transaminase

       2.6.1.106  dTDP-3-amino-3,4,6-trideoxy-alpha-D-glucose transaminase

       2.6.1.107  beta-methylphenylalanine transaminase

       2.6.1.108  (5-formylfuran-3-yl)methyl phosphate transaminase

       2.6.1.109  8-amino-3,8-dideoxy-alpha-D-manno-octulosonate transaminase

       2.6.1.110  dTDP-4-dehydro-2,3,6-trideoxy-D-glucose 4-aminotransferase

       2.6.1.111  3-aminobutanoyl-CoA transaminase

       2.6.1.112  (S)-ureidoglycine---glyoxylate transaminase

       2.6.1.113  putrescine---pyruvate transaminase

       2.6.1.114  8-demethyl-8-aminoriboflavin-5'-phosphate synthase

       2.6.1.115  5-hydroxydodecatetraenal 1-aminotransferase

       2.6.1.116  6-aminohexanoate aminotransferase

       2.6.1.117  L-glutamine---4-(methylsulfanyl)-2-oxobutanoate aminotransferase

       2.6.1.118  [amino-group carrier protein]-gamma-(L-lysyl)-L-glutamate aminotransferase

       2.6.1.119  vanillin aminotransferase

       2.6.1.120  beta-alanine---2-oxoglutarate transaminase

       2.6.1.121  8-amino-7-oxononanoate carboxylating dehydrogenase

       2.6.1.122  UDP-N-acetyl-3-dehydro-alpha-D-glucosamine 3-aminotranferase

       2.6.1.123  4-amino-4-deoxychorismate synthase (2-amino-4-deoxychorismate-forming)

       2.6.1.124  [amino-group carrier protein]-gamma-(L-ornithyl)-L-glutamate aminotransferase

       2.6.1.125  L-arginine:2-oxoglutarate transaminase

       2.6.1.126  L-aspartate:5-guanidino-3-methyl-2-oxopentanoate transaminase

     2.6.3  Oximinotransferases

     2.6.99  Transferring other nitrogenous groups

   2.7  Transferring phosphorus-containing groups

   2.8  Transferring sulfur-containing groups

   2.9  Transferring selenium-containing groups

   2.10  Transferring molybdenum- or tungsten-containing groups

 3. Hydrolases

 4. Lyases

 5. Isomerases

 6. Ligases

 7. Translocases