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EC Explorer
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EC Tree
1 Oxidoreductases
2 Transferases
3 Hydrolases
4 Lyases
5 Isomerases
5.1 Racemases and epimerases
5.2
cis-trans-
Isomerases
5.3 Intramolecular oxidoreductases
5.3.1 Interconverting aldoses and ketoses, and related compounds
5.3.2 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
5.3.99.1 created 1972, deleted 1992
5.3.99.2 prostaglandin-D synthase
5.3.99.3 prostaglandin-E synthase
5.3.99.4 prostaglandin-I synthase
5.3.99.5 thromboxane-A synthase
5.3.99.6 allene-oxide cyclase
5.3.99.7 styrene-oxide isomerase
5.3.99.8 capsanthin/capsorubin synthase
5.3.99.9 neoxanthin synthase
5.3.99.10 thiazole tautomerase
5.3.99.11 2-keto-
myo
-inositol isomerase
5.3.99.12 lachrymatory-factor synthase
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
5.99.1.1 thiocyanate isomerase
5.99.1.2 DNA topoisomerase
5.99.1.3 DNA topoisomerase (ATP-hydrolysing)
5.99.1.4 2-hydroxychromene-2-carboxylate isomerase
6 Ligases
7 Translocases