Enzyme EC numbers
EC (Enzyme Commission) numbers assigned by IUPAC-IUBMB
2. Transferases;
2.6 Transferring nitrogenous groups;
2.6.1 Transaminases
2.6.1.1 aspartate transaminase; glutamic-oxaloacetic transaminase; glutamic-aspartic transaminase;
transaminase A; AAT; AspT; 2-oxoglutarate-glutamate aminotransferase; aspartate alpha-
ketoglutarate transaminase; aspartate aminotransferase; aspartate-2-oxoglutarate
transaminase; aspartic acid aminotransferase; aspartic aminotransferase; aspartyl
aminotransferase; AST; glutamate-oxalacetate aminotransferase; glutamate-oxalate
transaminase; glutamic-aspartic aminotransferase; glutamic-oxalacetic transaminase;
glutamic oxalic transaminase; GOT (enzyme); L-aspartate transaminase; L-aspartate-alpha-
ketoglutarate transaminase; L-aspartate-2-ketoglutarate aminotransferase; L-aspartate-2-
oxoglutarate aminotransferase; L-aspartate-2-oxoglutarate-transaminase; L-aspartic
aminotransferase; oxaloacetate-aspartate aminotransferase; oxaloacetate transferase;
aspartate:2-oxoglutarate aminotransferase; glutamate oxaloacetate transaminase
2.6.1.2 alanine transaminase; glutamic-pyruvic transaminase; glutamic-alanine transaminase; GPT;
beta-alanine aminotransferase; alanine aminotransferase; alanine-alpha-ketoglutarate
aminotransferase; alanine-pyruvate aminotransferase; ALT; glutamic acid-pyruvic acid
transaminase; glutamic-pyruvic aminotransferase; L-alanine aminotransferase; L-alanine
transaminase; L-alanine-alpha-ketoglutarate aminotransferase; pyruvate transaminase;
pyruvate-alanine aminotransferase; pyruvate-glutamate transaminase
2.6.1.3 cysteine transaminase; cysteine aminotransferase; L-cysteine aminotransferase; CGT
2.6.1.4 glycine transaminase; glutamic-glyoxylic transaminase; glycine aminotransferase;
glyoxylate-glutamic transaminase; L-glutamate:glyoxylate aminotransferase; glyoxylate-
glutamate aminotransferase
2.6.1.5 tyrosine transaminase; tyrosine aminotransferase; glutamic-hydroxyphenylpyruvic
transaminase; glutamic phenylpyruvic aminotransferase; L-phenylalanine 2-oxoglutarate
aminotransferase; L-tyrosine aminotransferase; phenylalanine aminotransferase;
phenylalanine transaminase; phenylalanine-alpha-ketoglutarate transaminase; phenylpyruvate
transaminase; phenylpyruvic acid transaminase; tyrosine-alpha-ketoglutarate
aminotransferase; tyrosine-alpha-ketoglutarate transaminase; tyrosine-2-ketoglutarate
aminotransferase; TyrAT
2.6.1.6 leucine transaminase; L-leucine aminotransferase; leucine 2-oxoglutarate transaminase;
leucine aminotransferase; leucine-alpha-ketoglutarate transaminase
2.6.1.7 kynurenine---oxoglutarate transaminase; kynurenine transaminase (cyclizing); kynurenine 2-
oxoglutarate transaminase; kynurenine aminotransferase; L-kynurenine aminotransferase
2.6.1.8 2,5-diaminovalerate transaminase; diamino-acid transaminase; diamino acid aminotransferase
2.6.1.9 histidinol-phosphate transaminase; imidazolylacetolphosphate transaminase; glutamic-
imidazoleacetol phosphate transaminase; histidinol phosphate aminotransferase;
imidazoleacetol phosphate transaminase; L-histidinol phosphate aminotransferase;
histidine:imidazoleacetol phosphate transaminase; IAP transaminase;
imidazolylacetolphosphate aminotransferase
2.6.1.10 Deleted entry
2.6.1.11 acetylornithine transaminase; acetylornithine delta-transaminase; ACOAT; acetylornithine
5-aminotransferase; acetylornithine aminotransferase; N-acetylornithine aminotransferase;
N-acetylornithine-delta-transaminase; N2-acetylornithine 5-transaminase; N2-acetyl-L-
ornithine:2-oxoglutarate aminotransferase; succinylornithine aminotransferase; 2-N-
acetyl-L-ornithine:2-oxoglutarate 5-aminotransferase
2.6.1.12 alanine---oxo-acid transaminase; L-alanine-alpha-keto acid aminotransferase; leucine-
alanine transaminase; alanine-keto acid aminotransferase; alanine-oxo acid
aminotransferase
2.6.1.13 ornithine aminotransferase; ornithine delta-transaminase; L-ornithine:alpha-ketoglutarate
delta-aminotransferase; OAT; L-ornithine 5-aminotransferase; L-ornithine
aminotransferase; ornithine 5-aminotransferase; ornithine transaminase; ornithine-alpha-
ketoglutarate aminotransferase; ornithine-2-oxoacid aminotransferase; ornithine-keto acid
aminotransferase; ornithine-keto acid transaminase; ornithine-ketoglutarate
aminotransferase; ornithine-oxo acid aminotransferase; ornithine:alpha-oxoglutarate
transaminase; ornithine---oxo-acid transaminase
2.6.1.14 asparagine---oxo-acid transaminase; asparagine-keto acid aminotransferase
2.6.1.15 glutamine---pyruvate transaminase; glutaminase II; L-glutamine transaminase L; glutamine-
oxo-acid transaminase
2.6.1.16 glutamine---fructose-6-phosphate transaminase (isomerizing); hexosephosphate
aminotransferase; glucosamine-6-phosphate isomerase (glutamine-forming); glutamine-
fructose-6-phosphate transaminase (isomerizing); D-fructose-6-phosphate amidotransferase;
glucosaminephosphate isomerase; glucosamine 6-phosphate synthase; GlcN6P synthase
2.6.1.17 succinyldiaminopimelate transaminase; succinyldiaminopimelate aminotransferase; N-
succinyl-L-diaminopimelic glutamic transaminase
2.6.1.18 beta-alanine---pyruvate transaminase; beta-alanine-pyruvate aminotransferase; beta-
alanine-alpha-alanine transaminase
2.6.1.19 4-aminobutyrate transaminase; beta-alanine-oxoglutarate transaminase; aminobutyrate
aminotransferase; beta-alanine aminotransferase; beta-alanine-oxoglutarate
aminotransferase; gamma-aminobutyrate aminotransaminase; gamma-aminobutyrate
transaminase; gamma-aminobutyrate-alpha-ketoglutarate aminotransferase; gamma-
aminobutyrate-alpha-ketoglutarate transaminase; gamma-aminobutyrate:alpha-oxoglutarate
aminotransferase; gamma-aminobutyric acid aminotransferase; gamma-aminobutyric acid
pyruvate transaminase; gamma-aminobutyric acid transaminase; gamma-aminobutyric acid-
alpha-ketoglutarate transaminase; gamma-aminobutyric acid-alpha-ketoglutaric acid
aminotransferase; gamma-aminobutyric acid-2-oxoglutarate transaminase; gamma-aminobutyric
transaminase; 4-aminobutyrate aminotransferase; 4-aminobutyrate-2-ketoglutarate
aminotransferase; 4-aminobutyrate-2-oxoglutarate aminotransferase; 4-aminobutyrate-2-
oxoglutarate transaminase; 4-aminobutyric acid 2-ketoglutaric acid aminotransferase; 4-
aminobutyric acid aminotransferase; aminobutyrate aminotransferase; aminobutyrate
transaminase; GABA aminotransferase; GABA transaminase; GABA transferase; GABA-alpha-
ketoglutarate aminotransferase; GABA-alpha-ketoglutarate transaminase; GABA-alpha-
ketoglutaric acid transaminase; GABA-alpha-oxoglutarate aminotransferase; GABA-2-
oxoglutarate aminotransferase; GABA-2-oxoglutarate transaminase; GABA-oxoglutarate
aminotransferase; GABA-oxoglutarate transaminase; glutamate-succinic semialdehyde
transaminase; GabT
2.6.1.20 Deleted entry
2.6.1.21 D-amino-acid transaminase; D-aspartate transaminase; D-alanine aminotransferase; D-
aspartic aminotransferase; D-alanine-D-glutamate transaminase; D-alanine transaminase; D-
amino acid aminotransferase
2.6.1.22 (S)-3-amino-2-methylpropionate transaminase; L-3-aminoisobutyrate transaminase; beta-
aminobutyric transaminase; L-3-aminoisobutyric aminotransferase; beta-aminoisobutyrate-
alpha-ketoglutarate transaminase
2.6.1.23 4-hydroxyglutamate transaminase; 4-hydroxyglutamate aminotransferase
2.6.1.24 diiodotyrosine transaminase; diiodotyrosine aminotransferase; halogenated tyrosine
aminotransferase; halogenated tyrosine transaminase
2.6.1.25 Deleted entry
2.6.1.26 thyroid-hormone transaminase; 3,5-dinitrotyrosine transaminase; thyroid hormone
aminotransferase
2.6.1.27 tryptophan transaminase; L-phenylalanine-2-oxoglutarate aminotransferase; tryptophan
aminotransferase; 5-hydroxytryptophan-ketoglutaric transaminase; hydroxytryptophan
aminotransferase; L-tryptophan aminotransferase; L-tryptophan transaminase
2.6.1.28 tryptophan---phenylpyruvate transaminase; L-tryptophan-alpha-ketoisocaproate
aminotransferase
2.6.1.29 diamine transaminase; amine transaminase; amine-ketoacid transaminase; diamine
aminotransferase; diamine-ketoglutaric transaminase
2.6.1.30 pyridoxamine---pyruvate transaminase; pyridoxamine-pyruvic transaminase
2.6.1.31 pyridoxamine---oxaloacetate transaminase
2.6.1.32 valine---3-methyl-2-oxovalerate transaminase; valine---isoleucine transaminase; valine-3-
methyl-2-oxovalerate aminotransferase; alanine-valine transaminase; valine-2-keto-
methylvalerate aminotransferase; valine-isoleucine aminotransferase
2.6.1.33 dTDP-4-amino-4,6-dideoxy-D-glucose transaminase; thymidine diphospho-4-amino-4,6-
dideoxyglucose aminotransferase; thymidine diphospho-4-amino-6-deoxyglucose
aminotransferase; thymidine diphospho-4-keto-6-deoxy-D-glucose transaminase; thymidine
diphospho-4-keto-6-deoxy-D-glucose-glutamic transaminase; TDP-4-keto-6-deoxy-D-glucose
transaminase
2.6.1.34 UDP-2-acetamido-4-amino-2,4,6-trideoxyglucose transaminase; uridine diphospho-4-amino-2-
acetamido-2,4,6-trideoxyglucose aminotransferase
2.6.1.35 glycine---oxaloacetate transaminase; glycine-oxalacetate aminotransferase
2.6.1.36 L-lysine 6-transaminase; lysine 6-aminotransferase; lysine epsilon-aminotransferase;
lysine epsilon-transaminase; lysine:2-ketoglutarate 6-aminotransferase; L-lysine-alpha-
ketoglutarate aminotransferase; L-lysine-alpha-ketoglutarate 6-aminotransferase
2.6.1.37 2-aminoethylphosphonate---pyruvate transaminase; (2-aminoethyl)phosphonate transaminase;
(2-aminoethyl)phosphonate aminotransferase; (2-aminoethyl)phosphonic acid
aminotransferase; 2-aminoethylphosphonate-pyruvate aminotransferase; 2-
aminoethylphosphonate aminotransferase; 2-aminoethylphosphonate transaminase; AEP
transaminase; AEPT
2.6.1.38 histidine transaminase; histidine aminotransferase; histidine-2-oxoglutarate
aminotransferase
2.6.1.39 2-aminoadipate transaminase; alpha-aminoadipate aminotransferase; 2-aminoadipate
aminotransferase; 2-aminoadipic aminotransferase; glutamic-ketoadipic transaminase;
glutamate-alpha-ketoadipate transaminase
2.6.1.40 (R)-3-amino-2-methylpropionate---pyruvate transaminase; D-3-aminoisobutyrate---pyruvate
transaminase; beta-aminoisobutyrate-pyruvate aminotransferase; D-3-aminoisobutyrate-
pyruvate aminotransferase; D-3-aminoisobutyrate-pyruvate transaminase; (R)-3-amino-2-
methylpropionate transaminase; D-beta-aminoisobutyrate:pyruvate aminotransferase
2.6.1.41 D-methionine---pyruvate transaminase; D-methionine transaminase; D-methionine
aminotransferase
2.6.1.42 branched-chain-amino-acid transaminase; transaminase B; branched-chain amino acid
aminotransferase; branched-chain amino acid-glutamate transaminase; branched-chain
aminotransferase; L-branched chain amino acid aminotransferase; glutamate-branched-chain
amino acid transaminase
2.6.1.43 aminolevulinate transaminase; aminolevulinate aminotransferase, gamma,delta-dioxovalerate
aminotransferase; gamma,delta-dioxovaleric acid transaminase; 4,5-dioxovalerate
aminotransferase; 4,5-dioxovaleric acid transaminase; 4,5-dioxovaleric transaminase; 5-
aminolevulinic acid transaminase; alanine-gamma,delta-dioxovalerate aminotransferase;
alanine-dioxovalerate aminotransferase; alanine:4,5-dioxovalerate aminotransferase;
aminolevulinic acid transaminase; dioxovalerate transaminase; L-alanine-4,5-dioxovalerate
aminotransferase; L-alanine:4,5-dioxovaleric acid transaminase; L-alanine:dioxovalerate
transaminase; DOVA transaminase; 4,5-dioxovaleric acid aminotransferase
2.6.1.44 alanine---glyoxylate transaminase; AGT; alanine-glyoxylate aminotransferase; alanine-
glyoxylic aminotransferase; L-alanine-glycine transaminase
2.6.1.45 serine---glyoxylate transaminase
2.6.1.46 diaminobutyrate---pyruvate transaminase; diaminobutyrate-pyruvate aminotransferase; L-
diaminobutyric acid transaminase
2.6.1.47 alanine---oxomalonate transaminase; alanine-oxomalonate aminotransferase; L-alanine-
ketomalonate transaminase; alanine-ketomalonate (mesoxalate) transaminase
2.6.1.48 5-aminovalerate transaminase; 5-aminovalerate aminotransferase; delta-aminovalerate
aminotransferase; delta-aminovalerate transaminase
2.6.1.49 dihydroxyphenylalanine transaminase; dopa transaminase; dihydroxyphenylalanine
aminotransferase; aspartate-DOPP transaminase (ADT); L-dopa transaminase; dopa
aminotransferase; glutamate-DOPP transaminase (GDT); phenylalanine-DOPP transaminase
(PDT); DOPA 2-oxoglutarate aminotransferase; DOPAATS
2.6.1.50 glutamine---scyllo-inositol transaminase; glutamine scyllo-inosose aminotransferase; L-
glutamine-keto-scyllo-inositol aminotransferase; glutamine-scyllo-inosose transaminase;
L-glutamine-scyllo-inosose transaminase
2.6.1.51 serine---pyruvate transaminase; SPT; hydroxypyruvate:L-alanine transaminase
2.6.1.52 phosphoserine transaminase; PSAT; phosphoserine aminotransferase; 3-phosphoserine
aminotransferase; hydroxypyruvic phosphate-glutamic transaminase; L-phosphoserine
aminotransferase; phosphohydroxypyruvate transaminase; phosphohydroxypyruvic-glutamic
transaminase; 3-O-phospho-L-serine:2-oxoglutarate aminotransferase; SerC; PdxC; 3PHP
transaminase
2.6.1.53 Transferred to 1.4.1.13
2.6.1.54 pyridoxamine-phosphate transaminase; pyridoxamine phosphate aminotransferase;
pyridoxamine 5'-phosphate-alpha-ketoglutarate transaminase; pyridoxamine 5'-phosphate
transaminase
2.6.1.55 taurine---2-oxoglutarate transaminase; taurine aminotransferase; taurine transaminase;
taurine---alpha-ketoglutarate aminotransferase; taurine---glutamate transaminase
2.6.1.56 1D-1-guanidino-3-amino-1,3-dideoxy-scyllo-inositol transaminase; guanidinoaminodideoxy-
scyllo-inositol-pyruvate aminotransferase; L-alanine-N-amidino-3-(or 5-)keto-scyllo-
inosamine transaminase
2.6.1.57 aromatic-amino-acid transaminase; aromatic amino acid aminotransferase; aromatic
aminotransferase; ArAT
2.6.1.58 phenylalanine(histidine) transaminase; phenylalanine (histidine) aminotransferase;
phenylalanine(histidine):pyruvate aminotransferase; histidine:pyruvate aminotransferase;
L-phenylalanine(L-histidine):pyruvate aminotransferase
2.6.1.59 dTDP-4-amino-4,6-dideoxygalactose transaminase; thymidine diphosphoaminodideoxygalactose
aminotransferase; thymidine diphosphate 4-keto-6-deoxy-D-glucose transaminase
2.6.1.60 aromatic-amino-acid---glyoxylate transaminase
2.6.1.61 Deleted entry
2.6.1.62 adenosylmethionine---8-amino-7-oxononanoate transaminase; 7,8-diaminonanoate
transaminase; 7,8-diaminononanoate transaminase; DAPA transaminase; 7,8-diaminopelargonic
acid aminotransferase; DAPA aminotransferase; 7-keto-8-aminopelargonic acid;
diaminopelargonate synthase; 7-keto-8-aminopelargonic acid aminotransferase
2.6.1.63 kynurenine---glyoxylate transaminase; kynurenine-glyoxylate aminotransferase
2.6.1.64 glutamine---phenylpyruvate transaminase; glutamine transaminase K; glutamine-
phenylpyruvate aminotransferase
2.6.1.65 N6-acetyl-beta-lysine transaminase; epsilon-acetyl-beta-lysine aminotransferase
2.6.1.66 valine---pyruvate transaminase; transaminase C; valine-pyruvate aminotransferase;
alanine-oxoisovalerate aminotransferase
2.6.1.67 2-aminohexanoate transaminase; norleucine transaminase; norleucine (leucine)
aminotransferase; leucine L-norleucine: 2-oxoglutarate aminotransferase
2.6.1.68 ornithine(lysine) transaminase; ornithine(lysine) aminotransferase; lysine/ornithine:2-
oxoglutarate aminotransferase; L-ornithine(L-lysine):2-oxoglutarate-aminotransferase
2.6.1.69 Deleted entry
2.6.1.70 aspartate---phenylpyruvate transaminase; aspartate-phenylpyruvate aminotransferase
2.6.1.71 lysine---pyruvate 6-transaminase; lysine-pyruvate aminotransferase; Lys-AT
2.6.1.72 D-4-hydroxyphenylglycine transaminase; D-hydroxyphenylglycine aminotransferase
2.6.1.73 methionine---glyoxylate transaminase; methionine-glyoxylate aminotransferase; MGAT
2.6.1.74 cephalosporin-C transaminase; cephalosporin C aminotransferase; L-alanine:cephalosporin-C
aminotransferase
2.6.1.75 cysteine-conjugate transaminase; cysteine conjugate aminotransferase; cysteine-conjugate
alpha-ketoglutarate transaminase (CAT-1)
2.6.1.76 diaminobutyrate---2-oxoglutarate transaminase; L-2,4-diaminobutyrate:2-ketoglutarate 4-
aminotransferase; 2,4-diaminobutyrate 4-aminotransferase; diaminobutyrate
aminotransferase; DABA aminotransferase; DAB aminotransferase; EctB; diaminibutyric acid
aminotransferase; L-2,4-diaminobutyrate:2-oxoglutarate 4-aminotransferase
2.6.1.77 taurine---pyruvate aminotransferase; Tpa
2.6.1.78 aspartate---prephenate aminotransferase; prephenate transaminase (ambiguous); PAT
(ambiguous); prephenate aspartate aminotransferase; L-aspartate:prephenate
aminotransferase
2.6.1.79 glutamate---prephenate aminotransferase; prephenate transaminase (ambiguous); PAT
(ambiguous); L-glutamate:prephenate aminotransferase
2.6.1.80 nicotianamine aminotransferase; NAAT; NAAT-I; NAAT-II; NAAT-III; nicotianamine
transaminase
2.6.1.81 succinylornithine transaminase; succinylornithine aminotransferase; N2-succinylornithine
5-aminotransferase; AstC; SOAT; 2-N-succinyl-L-ornithine:2-oxoglutarate 5-
aminotransferase
2.6.1.82 putrescine aminotransferase; putrescine-alpha-ketoglutarate transaminase; YgjG;
putrescine:alpha-ketoglutarate aminotransferase; PAT; putrescine:2-oxoglutarate
aminotransferase; putrescine transaminase
2.6.1.83 LL-diaminopimelate aminotransferase; LL-diaminopimelate transaminase; LL-DAP
aminotransferase; LL-DAP-AT
2.6.1.84 arginine---pyruvate transaminase; arginine:pyruvate transaminase; AruH; ATase
2.6.1.85 aminodeoxychorismate synthase; ADC synthase; 4-amino-4-deoxychorismate synthase; PabB;
chorismate:L-glutamine amido-ligase (incorrect)
2.6.1.86 2-amino-4-deoxychorismate synthase; ADIC synthase; 2-amino-2-deoxyisochorismate synthase;
SgcD
2.6.1.- 2-amino-4-deoxychorismate synthase; ADIC synthase; 2-amino-2-deoxyisochorismate synthase;
SgcD
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Last updated: January 26, 2010