ENZYME - Browse Classes and Subclasses
The following list contains the definitions of enzyme classes, subclasses and sub-subclasses. If you click on one of the following lines, you will get a list of all enzymes in the corresponding classes, with the possibility to obtain a list of all corresponding UniProtKB/Swiss-Prot entries.A single file containing all enzyme entries can be found at https://ftp.expasy.org/databases/enzyme/enzyme.dat.
View options:
1. -. -.- Oxidoreductases. 1. 1. -.- Acting on the CH-OH group of donors. 1. 2. -.- Acting on the aldehyde or oxo group of donors. 1. 3. -.- Acting on the CH-CH group of donors. 1. 4. -.- Acting on the CH-NH2 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 donors. 1.13. -.- Acting on single donors with incorporation of molecular oxygen (oxygenases). The oxygen incorporated need not be derived from O2. 1.14. -.- Acting on paired donors, with incorporation or reduction of molecular oxygen. The oxygen incorporated need not be derived from O2. 1.15. -.- Acting on superoxide as acceptor. 1.16. -.- Oxidizing metal ions. 1.17. -.- Acting on CH or CH2 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. -.- Catalyzing the reaction X-H + Y-H = 'X-Y'. 1.22. -.- Acting on halogen in donors. 1.23. -.- Reducing C-O-C group as acceptor. 1.97. -.- Other oxidoreductases. 1.98. -.- Enzymes using H2 as reductant. 1.99. -.- Other enzymes using O2 as oxidant. 2. -. -.- Transferases. 2. 1. -.- Transferring one-carbon groups. 2. 2. -.- Transferring aldehyde or ketonic groups. 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. 3. -. -.- Hydrolases. 3. 1. -.- Acting on ester bonds. 3. 2. -.- Glycosylases. 3. 3. -.- Acting on ether bonds. 3. 4. -.- Acting on peptide bonds (peptidases). 3. 5. -.- Acting on carbon-nitrogen bonds, other than peptide bonds. 3. 6. -.- Acting on acid anhydrides. 3. 7. -.- Acting on carbon-carbon bonds. 3. 8. -.- Acting on halide bonds. 3. 9. -.- Acting on phosphorus-nitrogen bonds. 3.10. -.- Acting on sulfur-nitrogen bonds. 3.11. -.- Acting on carbon-phosphorus bonds. 3.12. -.- Acting on sulfur-sulfur bonds. 3.13. -.- Acting on carbon-sulfur bonds. 4. -. -.- Lyases. 4. 1. -.- Carbon-carbon lyases. 4. 2. -.- Carbon-oxygen lyases. 4. 3. -.- Carbon-nitrogen lyases. 4. 4. -.- Carbon-sulfur lyases. 4. 5. -.- Carbon-halide lyases. 4. 6. -.- Phosphorus-oxygen lyases. 4. 7. -.- Carbon-phosphorus lyases. 4. 8. -.- Nitrogen-oxygen lyases. 4.98. -.- ATP-independent chelatases. 4.99. -.- Other lyases. 5. -. -.- Isomerases. 5. 1. -.- Racemases and epimerases. 5. 2. -.- Cis-trans-isomerases. 5. 3. -.- Intramolecular oxidoreductases. 5. 4. -.- Intramolecular transferases. 5. 5. -.- Intramolecular lyases. 5. 6. -.- Isomerases altering macromolecular conformation. 5.99. -.- Other isomerases. 6. -. -.- Ligases. 6. 1. -.- Forming carbon-oxygen bonds. 6. 2. -.- Forming carbon-sulfur bonds. 6. 3. -.- Forming carbon-nitrogen bonds. 6. 4. -.- Forming carbon-carbon bonds. 6. 5. -.- Forming phosphoric ester bonds. 6. 6. -.- Forming nitrogen-metal bonds. 6. 7. -.- Forming nitrogen-nitrogen bonds. 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 amino acids and peptides. 7. 5. -.- Catalysing the translocation carbohydrates and their derivatives. 7. 6. -.- Catalysing the translocation of other compounds.