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EC Tree
1 Oxidoreductases
2 Transferases
3 Hydrolases
4 Lyases
5 Isomerases
5.1 Racemases and epimerases
5.1.1 Acting on amino acids and derivatives
5.1.2 Acting on hydroxy acids and derivatives
5.1.3 Acting on carbohydrates and derivatives
5.1.3.1 ribulose-phosphate 3-epimerase
5.1.3.2 UDP-glucose 4-epimerase
5.1.3.3 aldose 1-epimerase
5.1.3.4
L
-ribulose-5-phosphate 4-epimerase
5.1.3.5 UDP-arabinose 4-epimerase
5.1.3.6 UDP-glucuronate 4-epimerase
5.1.3.7 UDP-
N
-acetylglucosamine 4-epimerase
5.1.3.8
N
-acylglucosamine 2-epimerase
5.1.3.9
N
-acylglucosamine-6-phosphate 2-epimerase
5.1.3.10 CDP-paratose 2-epimerase
5.1.3.11 cellobiose epimerase
5.1.3.12 UDP-glucuronate 5′-epimerase
5.1.3.13 dTDP-4-dehydrorhamnose 3,5-epimerase
5.1.3.14 UDP-
N
-acetylglucosamine 2-epimerase (non-hydrolysing)
5.1.3.15 glucose-6-phosphate 1-epimerase
5.1.3.16 UDP-glucosamine 4-epimerase
5.1.3.17 heparosan-
N
-sulfate-glucuronate 5-epimerase
5.1.3.18 GDP-mannose 3,5-epimerase
5.1.3.19 chondroitin-glucuronate 5-epimerase
5.1.3.20 ADP-
glycero
manno
-heptose 6-epimerase
5.1.3.21 maltose epimerase
5.1.3.22
L
-ribulose-5-phosphate 3-epimerase
5.1.3.23 UDP-2,3-diacetamido-2,3-dideoxyglucuronic acid 2-epimerase
5.1.3.24
N
-acetylneuraminate epimerase
5.1.3.25 dTDP-
L
-rhamnose 4-epimerase
5.1.3.26
N
-acetyl-α-
D
-glucosaminyl-diphospho-
di
trans
,
octacis
-undecaprenol 4-epimerase
5.1.3.27 dTDP-4-dehydro-6-deoxy-
D
-glucose 3-epimerase
5.1.3.28 UDP-
N
-acetyl-
L
-fucosamine synthase
5.1.3.29
L
-fucose mutarotase
5.1.3.30
D
-psicose 3-epimerase
5.1.3.31
D
-tagatose 3-epimerase
5.1.3.32
L
-rhamnose mutarotase
5.1.3.33 2-
epi
-5-
epi
-valiolone epimerase
5.1.3.34 monoglucosyldiacylglycerol epimerase
5.1.3.35 2-
epi
-5-
epi
-valiolone 7-phosphate 2-epimerase
5.1.3.36 heparosan-glucuronate 5-epimerase
5.1.3.37 mannuronan 5-epimerase
5.1.3.38
D
-erythrulose 1-phosphate 3-epimerase
5.1.3.39
L
-erythrulose 4-phosphate epimerase
5.1.3.40
D
-tagatose 6-phosphate 4-epimerase
5.1.3.41 fructoselysine 3-epimerase
5.1.3.42
D
-glucosamine-6-phosphate 4-epimerase
5.1.3.43 sulfoquinovose mutarotase
5.1.3.44 mannose 2-epimerase
5.1.99 Acting on other compounds
5.2
cis-trans-
Isomerases
5.3 Intramolecular oxidoreductases
5.3.1 Interconverting aldoses and ketoses, and related compounds
5.3.2 Interconverting keto- and enol-groups
5.3.3 Transposing C=C bonds
5.3.4 Transposing S-S bonds
5.3.99 Other intramolecular oxidoreductases
5.4 Intramolecular transferases
5.5 Intramolecular lyases
5.6 Isomerases altering macromolecular conformation
5.99 Other isomerases
5.99.1 Sole sub-subclass for isomerases that do not belong in the other subclasses
6 Ligases
7 Translocases
7.1 Catalysing the translocation of hydrons
7.2 Catalysing the translocation of inorganic cations
7.3 Catalysing the translocation of inorganic anions and their chelates
7.4 Catalysing the translocation of amino acids and peptides
7.5 Catalysing the translocation of carbohydrates and their derivatives
7.6 Catalysing the translocation of other compounds