EC Explorer

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EC Tree

1 Oxidoreductases

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)

5.6 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

5.99.1 Sole sub-subclass for isomerases that do not belong in the other subclasses

6.1 Forming carbon-oxygen bonds

6.2 Forming carbon-sulfur bonds

6.2.1 Acid-thiol ligases

6.2.2 Amide---thiol ligases

6.3 Forming carbon-nitrogen bonds

6.3.1 Acid—ammonia (or amine) ligases (amide synthases)

6.3.2 Acid—amino-acid ligases (peptide synthases)

6.3.3 Cyclo-ligases

6.3.4 Other carbon-nitrogen ligases

6.3.5 Carbon-nitrogen ligases with glutamine as amido-N-donor

6.4 Forming carbon-carbon bonds

6.5 Forming phosphoric-ester bonds

6.6 Forming nitrogen—metal bonds

6.7 Forming nitrogen-nitrogen bonds

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Release 2023.1 (January 2023)