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1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.2 Acting on the aldehyde or oxo group of donors
1.2.1 With NAD
+
or NADP
+
as acceptor
1.2.2 With a cytochrome as acceptor
1.2.3 With oxygen as acceptor
1.2.4 With a disulfide as acceptor
1.2.5 With a quinone or similar compound as acceptor
1.2.7 With an iron-sulfur protein as acceptor
1.2.98 With other, known, physiological acceptors
1.2.99 With unknown physiological acceptors
1.3 Acting on the CH-CH group of donors
1.4 Acting on the CH-NH
2
group of donors
1.5 Acting on the CH-NH group of donors
1.6 Acting on NADH or NADPH
1.7 Acting on other nitrogenous compounds as donors
1.8 Acting on a sulfur group of donors
1.9 Acting on a heme group of donors
1.10 Acting on diphenols and related substances as donors
1.11 Acting on a peroxide as acceptor
1.12 Acting on hydrogen as donor
1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)
1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
1.15 Acting on superoxide as acceptor
1.16 Oxidizing metal ions
1.17 Acting on CH or CH
2
groups
1.18 Acting on iron-sulfur proteins as donors
1.19 Acting on reduced flavodoxin as donor
1.20 Acting on phosphorus or arsenic in donors
1.21 Catalysing the reaction X-H + Y-H = X-Y
1.21.1 With NAD
+
or NADP
+
as acceptor
1.21.3 With oxygen as acceptor
1.21.4 With a disulfide as acceptor
1.21.98 With other, known, physiological acceptors
1.21.99 With unknown physiological acceptors
1.22 Acting on halogen in donors
1.23 Reducing C-O-C group as acceptor
1.97 Other oxidoreductases
1.98 Enzymes using H
2
as reductant (deleted subclass)
1.98.1. undefined
1.99 Other enzymes using O
2
as oxidant (deleted subclass)
2 Transferases
3 Hydrolases
4 Lyases
5 Isomerases
6 Ligases
6.1 Forming carbon-oxygen bonds
6.2 Forming carbon-sulfur bonds
6.3 Forming carbon-nitrogen bonds
6.3.1 Acidammonia (or amine) ligases (amide synthases)
6.3.2 Acidamino-acid ligases (peptide synthases)
6.3.2.1 pantoate—β-alanine ligase (AMP-forming)
6.3.2.2 glutamate—cysteine ligase
6.3.2.3 glutathione synthase
6.3.2.4
D
-alanine—
D
-alanine ligase
6.3.2.5 phosphopantothenate—cysteine ligase (CTP)
6.3.2.6 phosphoribosylaminoimidazolesuccinocarboxamide synthase
6.3.2.7 UDP-
N
-acetylmuramoyl-
L
-alanyl-
D
-glutamate—
L
-lysine ligase
6.3.2.8 UDP-
N
-acetylmuramate—
L
-alanine ligase
6.3.2.9 UDP-
N
-acetylmuramoyl-
L
-alanine—
D
-glutamate ligase
6.3.2.10 UDP-
N
-acetylmuramoyl-tripeptide—
D
-alanyl-
D
-alanine ligase
6.3.2.11 carnosine synthase
6.3.2.12 dihydrofolate synthase
6.3.2.13 UDP-
N
-acetylmuramoyl-
L
-alanyl-
D
-glutamate—2,6-diaminopimelate ligase
6.3.2.14 enterobactin synthase
6.3.2.15 created 1976, deleted 2002
6.3.2.16
D
-alanine—alanyl-poly(glycerolphosphate) ligase
6.3.2.17 tetrahydrofolate synthase
6.3.2.18 γ-glutamylhistamine synthase
6.3.2.19 ubiquitin—protein ligase
6.3.2.20 indoleacetate—lysine synthetase
6.3.2.21 ubiquitin—calmodulin ligase
6.3.2.22 diphthine—ammonia ligase
6.3.2.23 homoglutathione synthase
6.3.2.24 tyrosine—arginine ligase
6.3.2.25 tubulin—tyrosine ligase
6.3.2.26
N
-(5-amino-5-carboxypentanoyl)-
L
-cysteinyl-
D
-valine synthase
6.3.2.27 aerobactin synthase
6.3.2.28
L
-amino-acid α-ligase
6.3.2.29 cyanophycin synthase (
L
-aspartate-adding)
6.3.2.30 cyanophycin synthase (
L
-arginine-adding)
6.3.2.31 coenzyme F
420
-0:
L
-glutamate ligase
6.3.2.32 coenzyme γ-F
420
-2:α-
L
-glutamate ligase
6.3.2.33 tetrahydrosarcinapterin synthase
6.3.2.34 coenzyme F
420
-1:γ-
L
-glutamate ligase
6.3.2.35
D
-alanine—
D
-serine ligase
6.3.2.36 4-phosphopantoate—β-alanine ligase
6.3.2.37 UDP-
N
-acetylmuramoyl-
L
-alanyl-
D
-glutamate—
D
-lysine ligase
6.3.2.38
N
2
-citryl-
N
6
-acetyl-
N
6
-hydroxylysine synthase
6.3.2.39 aerobactin synthase
6.3.2.40 cyclopeptine synthase
6.3.2.41
N
-acetylaspartylglutamate synthase
6.3.2.42
N
-acetylaspartylglutamylglutamate synthase
6.3.2.43 [amino-group carrier protein]—
L
-2-aminoadipate ligase
6.3.2.44 pantoate—β-alanine ligase (ADP-forming)
6.3.2.45 UDP-
N
-acetylmuramate—
L
-alanyl-γ-
D
-glutamyl-
meso
-2,6-diaminoheptanedioate ligase
6.3.2.46 fumarate—(
S
)-2,3-diaminopropanoate ligase
6.3.2.47 dapdiamide synthase
6.3.2.48
L
-arginine-specific
L
-amino acid ligase
6.3.2.49
L
-alanine—
L
-anticapsin ligase
6.3.2.50 tenuazonic acid synthetase
6.3.2.51 phosphopantothenate—cysteine ligase (ATP)
6.3.2.52 jasmonoyl—
L
-amino acid ligase
6.3.2.53 UDP-
N
-acetylmuramoyl-
L
-alanine—
L
-glutamate ligase
6.3.2.54
L
-2,3-diaminopropanoate—citrate ligase
6.3.2.55 2-[(
L
-alanin-3-ylcarbamoyl)methyl]-3-(2-aminoethylcarbamoyl)-2-hydroxypropanoate synthase
6.3.2.56 staphyloferrin B synthase
6.3.2.57 staphyloferrin A synthase
6.3.2.58
D
-ornithine—citrate ligase
6.3.2.59 3-methyl-
D
-ornithine—
L
-lysine ligase
6.3.2.60 glutamate—[amino group carrier protein] ligase
6.3.2.61 tubulin-glutamate ligase
6.3.2.62 β-tubulin-glutamate ligase
6.3.3 Cyclo-ligases
6.3.4 Other carbon-nitrogen ligases
6.3.5 Carbon-nitrogen ligases with glutamine as amido-N-donor
6.4 Forming carbon-carbon bonds
6.5 Forming phosphoric-ester bonds
6.6 Forming nitrogenmetal bonds
6.7 Forming nitrogen-nitrogen bonds
7 Translocases