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EC Tree

1 Oxidoreductases

2.1 Transferring one-carbon groups

2.2 Transferring aldehyde or ketonic groups

2.2.1 Transketolases and transaldolases

2.3 Acyltransferases

2.4 Glycosyltransferases

2.5 Transferring alkyl or aryl groups, other than methyl groups

2.6 Transferring 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

2.10.1 Molybdenumtransferases or tungstentransferases with sulfide groups as acceptors

5.1 Racemases and epimerases

5.2 cis-trans-Isomerases

5.3 Intramolecular oxidoreductases

5.3.1 Interconverting aldoses and ketoses, and related compounds

5.3.1.1 triose-phosphate isomerase

5.3.1.2 created 1961, deleted 1976

5.3.1.3 D-arabinose isomerase

5.3.1.4 L-arabinose isomerase

5.3.1.5 xylose isomerase

5.3.1.6 ribose-5-phosphate isomerase

5.3.1.7 mannose isomerase

5.3.1.8 mannose-6-phosphate isomerase

5.3.1.9 glucose-6-phosphate isomerase

5.3.1.10 created 1961, deleted 2000

5.3.1.11 created 1961, deleted 1978

5.3.1.12 glucuronate isomerase

5.3.1.13 arabinose-5-phosphate isomerase

5.3.1.14 L-rhamnose isomerase

5.3.1.15 D-lyxose ketol-isomerase

5.3.1.16 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino]imidazole-4-carboxamide isomerase

5.3.1.17 5-dehydro-4-deoxy-D-glucuronate isomerase

5.3.1.18 created 1972, deleted 1978

5.3.1.19 created 1972, deleted 1984

5.3.1.20 ribose isomerase

5.3.1.21 corticosteroid side-chain-isomerase

5.3.1.22 hydroxypyruvate isomerase

5.3.1.23 S-methyl-5-thioribose-1-phosphate isomerase

5.3.1.24 phosphoribosylanthranilate isomerase

5.3.1.25 L-fucose isomerase

5.3.1.26 galactose-6-phosphate isomerase

5.3.1.27 6-phospho-3-hexuloisomerase

5.3.1.28 D-sedoheptulose-7-phosphate isomerase

5.3.1.29 ribose-1,5-bisphosphate isomerase

5.3.1.30 5-deoxy-glucuronate isomerase

5.3.1.31 sulfoquinovose isomerase

5.3.1.32 (4S)-4-hydroxy-5-phosphooxypentane-2,3-dione isomerase

5.3.1.33 L-erythrulose-1-phosphate isomerase

5.3.1.34 D-erythrulose 4-phosphate isomerase

5.3.1.35 2-dehydrotetronate isomerase

5.3.1.36 D-apiose isomerase

5.3.1.37 4-deoxy-4-sulfo-D-erythrose isomerase

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

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Release 2023.1 (January 2023)