List of EC numbers (EC 3)

This list contains a list of EC numbers for the third group, EC 3, hydrolases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.

EC 3.1: Acting on Ester Bonds

EC 3.1.1: Carboxylic Ester Hydrolases

EC 3.1.2: Thioester Hydrolases

EC 3.1.3: Phosphoric Monoester Hydrolases

EC 3.1.4: Phosphoric Diester Hydrolases

EC 3.1.5: Triphosphoric Monoester Hydrolases

EC 3.1.6: Sulfuric Ester Hydrolases

EC 3.1.7: Diphosphoric Monoester Hydrolases

EC 3.1.8: Phosphoric Triester Hydrolases

EC 3.1.11: Exodeoxyribonucleases Producing 5'-Phosphomonoesters

EC 3.1.13: Exoribonucleases Producing 5'-Phosphomonoesters

EC 3.1.14: Exoribonucleases Producing 3'-Phosphomonoesters

EC 3.1.15: Exonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 5'-Phosphomonoesters

EC 3.1.16: Exonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 3'-Phosphomonoesters

EC 3.1.21: Endodeoxyribonucleases Producing 5'-Phosphomonoesters

EC 3.1.22: Endodeoxyribonucleases Producing 3'-Phosphomonoesters

EC 3.1.25: Site-Specific Endodeoxyribonucleases Specific for Altered Bases

EC 3.1.26: Endoribonucleases Producing 5'-Phosphomonoesters

EC 3.1.27: Endoribonucleases Producing 3'-Phosphomonoesters

EC 3.1.30: Endoribonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 5'-Phosphomonoesters

EC 3.1.31: Endoribonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 3'-Phosphomonoesters

EC 3.2: Glycosylases

EC 3.2.1: Glycosidases, i.e. enzymes hydrolysing O- and S-glycosyl compounds

EC 3.2.2: Hydrolysing N-Glycosyl Compounds

EC 3.2.3: Hydrolysing S-Glycosyl Compounds

EC 3.3: Acting on Ether Bonds

EC 3.3.1: Thioether and trialkylsulfonium hydrolases

EC 3.3.2: Ether Hydrolases

EC 3.4: act on peptide bonds - Peptidase

EC 3.4.1 α-amino acyl peptide hydrolases (discontinued)

EC 3.4.2 Peptidyl amino acid hydrolases (discontinued)

EC 3.4.3 Dipeptide Hydrolases (discontinued)

EC 3.4.4 Peptidyl Peptide Hydrolases (discontinued)

EC 3.4.11 Aminopeptidases

EC 3.4.13 Dipeptidases

EC 3.4.14 Dipeptidyl peptidases and tripeptidyl peptidases

EC 3.4.15 Peptidyl dipeptidases

EC 3.4.16 Serine type carboxypeptidases

EC 3.4.17 Metallocarboxypeptidases

EC 3.4.18 Cysteine type carboxypeptidases

EC 3.4.19 Omega peptidases

EC 3.4.21: Serine proteases

EC 3.4.22 Cysteine proteases

EC 3.4.23 Aspartic endopeptidases

EC 3.4.24: Metallopeptidases

EC 3.4.25 Threonine endopeptidases

EC 3.4.99 Endopeptidases of unknown catalytic mechanism

EC 3.5: act on carbon-nitrogen bonds, other than peptide bonds

3.5.1: linear amides

3.5.2: cyclic amides

3.5.3: linear amidines

3.5.4: cyclic amidines

3.5.5: nitriles

3.5.99: other compounds

EC 3.6: Act on acid anhydrides

3.6.1

3.6.2

3.6.3

3.6.4

3.6.5

EC 3.7: act on carbon-carbon bonds

EC 3.8: act on halide bonds

EC 3.9: act on phosphorus-nitrogen bonds

EC 3.10: act on sulfur-nitrogen bonds

EC 3.11: act on carbon-phosphorus bonds

EC 3.12: act on sulfur-sulfur bonds

EC 3.13: act on carbon-sulfur bonds

Hydrolase: sugar hydrolases (EC 3.2)
3.2.1: Glycoside hydrolases
Disaccharidase
Glucosidases
Other
3.2.2: Hydrolysing
N-Glycosyl compounds
Hydrolases: ether bond (EC 3.3)
3.3.1
3.3.2
3.4.11-19: Exopeptidase
3.4.11
3.4.13
3.4.14
3.4.15
3.4.16
3.4.17
Other/ungrouped
3.4.21-25: Endopeptidase
3.4.99: Unknown
Hydrolases: carbon-nitrogen non-peptide (EC 3.5)
3.5.1: Linear amides /
Amidohydrolases
3.5.2: Cyclic amides/
Amidohydrolases
3.5.3: Linear amidines/
Ureohydrolases
3.5.4: Cyclic amidines/
Aminohydrolases
3.5.5: Nitriles/
Aminohydrolases
3.5.99: Other
3.6.1
3.6.2
3.6.3-4: ATPase
3.6.3
Cu++ (3.6.3.4)
Ca+ (3.6.3.8)
Na+/K+ (3.6.3.9)
H+/K+ (3.6.3.10)
  • ATP4A
Other P-type ATPase
3.6.4
3.6.5: GTPase
3.6.5.1: Heterotrimeric G protein
3.6.5.2: Small GTPase > Ras superfamily
3.6.5.3: Protein-synthesizing GTPase
3.6.5.5-6: Polymerization motors
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