EC Explorer

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EC Tree

1 Oxidoreductases

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

5.1 Racemases and epimerases

5.2 cis-trans-Isomerases

5.3 Intramolecular oxidoreductases

5.4 Intramolecular transferases

5.4.1 Transferring acyl groups

5.4.2 Phosphotransferases (phosphomutases)

5.4.3 Transferring amino groups

5.4.4 Transferring hydroxy groups

5.4.99 Transferring other groups

5.5 Intramolecular lyases

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

5.6 Isomerases altering macromolecular conformation

5.6.1 Enzymes altering polypeptide conformation or assembly

5.6.2 Enzymes altering nucleic acid conformation

5.99 Other isomerases

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

6.5.1 Ligases that form phosphoric-ester bonds (only sub-subclass identified to date)

6.6 Forming nitrogen—metal bonds

6.7 Forming nitrogen-nitrogen bonds

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Release 2023.1 (January 2023)