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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

5.1 Racemases and epimerases

5.2 cis-trans-Isomerases

5.3 Intramolecular oxidoreductases

5.4 Intramolecular transferases

5.5 Intramolecular lyases

5.5.1 Intramolecular lyases (only sub-subclass identified to date)

5.5.1.1 muconate cycloisomerase

5.5.1.2 3-carboxy-cis,cis-muconate cycloisomerase

5.5.1.3 tetrahydroxypteridine cycloisomerase

5.5.1.4 inositol-3-phosphate synthase

5.5.1.5 carboxy-cis,cis-muconate cyclase

5.5.1.6 chalcone isomerase

5.5.1.7 chloromuconate cycloisomerase

5.5.1.8 (+)-bornyl diphosphate synthase

5.5.1.9 cycloeucalenol cycloisomerase

5.5.1.10 α-pinene-oxide decyclase

5.5.1.11 dichloromuconate cycloisomerase

5.5.1.12 copalyl diphosphate synthase

5.5.1.13 ent-copalyl diphosphate synthase

5.5.1.14 syn-copalyl-diphosphate synthase

5.5.1.15 terpentedienyl-diphosphate synthase

5.5.1.16 halimadienyl-diphosphate synthase

5.5.1.17 (S)-β-macrocarpene synthase

5.5.1.18 lycopene ε-cyclase

5.5.1.19 lycopene β-cyclase

5.5.1.20 prosolanapyrone-III cycloisomerase

5.5.1.21 copal-8-ol diphosphate synthase

5.5.1.22 (–)-bornyl diphosphate synthase

5.5.1.23 aklanonic acid methyl ester cyclase

5.5.1.24 tocopherol cyclase

5.5.1.25 3,6-anhydro-L-galactonate cycloisomerase

5.5.1.26 nogalonic acid methyl ester cyclase

5.5.1.27 D-galactarolactone cycloisomerase

5.5.1.28 (–)-kolavenyl diphosphate synthase

5.5.1.29 (+)-kolavenyl diphosphate synthase

5.5.1.30 labda-7,13-dienyl diphosphate synthase

5.5.1.31 hapalindole H synthase

5.5.1.32 12-epi-hapalindole U synthase

5.5.1.33 12-epi-fischerindole U synthase

5.5.1.34 (+)-cis,trans-nepetalactol synthase

5.5.1.35 (+)-cis,cis-nepetalactol synthase

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

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Release 2023.1 (January 2023)