Welcome to the MedLibrary.org Wikipedia Supplement on List of EC numbers (EC 3) -- Please Click to Return to Front Page

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.

Contents 1 EC 3.1: Acting on Ester Bonds 1.1 EC 3.1.1: Carboxylic Ester Hydrolases 1.2 EC 3.1.2: Thioester Hydrolases 1.3 EC 3.1.3: Phosphoric Monoester Hydrolases 1.4 EC 3.1.4: Phosphoric Diester Hydrolases 1.5 EC 3.1.5: Triphosphoric Monoester Hydrolases 1.6 EC 3.1.6: Sulfuric Ester Hydrolases 1.7 EC 3.1.7: Diphosphoric Monoester Hydrolases 1.8 EC 3.1.8: Phosphoric Triester Hydrolases 1.9 EC 3.1.11: Exodeoxyribonucleases Producing 5'-Phosphomonoesters 1.10 EC 3.1.13: Exoribonucleases Producing 5'-Phosphomonoesters 1.11 EC 3.1.14: Exoribonucleases Producing 3'-Phosphomonoesters 1.12 EC 3.1.15: Exonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 5'-Phosphomonoesters 1.13 EC 3.1.16: Exonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 3'-Phosphomonoesters 1.14 EC 3.1.21: Endodeoxyribonucleases Producing 5'-Phosphomonoesters 1.15 EC 3.1.22: Endodeoxyribonucleases Producing 3'-Phosphomonoesters 1.16 EC 3.1.23: and EC 3.1.24 now EC 3.1.21.3, EC 3.1.21.4 and EC 3.1.21.5 1.17 EC 3.1.25: Site-Specific Endodeoxyribonucleases Specific for Altered Bases 1.18 EC 3.1.26: Endoribonucleases Producing 5'-Phosphomonoesters 1.19 EC 3.1.27: Endoribonucleases Producing 3'-Phosphomonoesters 1.20 EC 3.1.30: Endoribonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 5'-Phosphomonoesters 1.21 EC 3.1.31: Endoribonucleases Active with either Ribo- or Deoxyribonucleic Acids and Producing 3'-Phosphomonoesters 2 EC 3.2: Glycosylases 2.1 EC 3.2.1: Glycosidases, i.e. enzymes hydrolysing O- and S-glycosyl compounds 2.2 EC 3.2.2: Hydrolysing N-Glycosyl Compounds 2.3 EC 3.2.3: Hydrolysing S-Glycosyl Compounds 3 EC 3.3: Acting on Ether Bonds 3.1 EC 3.3.1: Thioether and trialkylsulfonium hydrolases 3.2 EC 3.3.2: Ether Hydrolases 4 EC 3.4: act on peptide bonds - Peptidase 4.1 EC 3.4.1 α-amino acyl peptide hydrolases (discontinued) 4.2 EC 3.4.2 Peptidyl amino acid hydrolases (discontinued) 4.3 EC 3.4.3 Dipeptide Hydrolases (discontinued) 4.4 EC 3.4.4 Peptidyl Peptide Hydrolases (discontinued) 4.5 EC 3.4.11 Aminopeptidases 4.6 EC 3.4.13 Dipeptidases 4.7 EC 3.4.14 Dipeptidyl peptidases and tripeptidyl peptidases 4.8 EC 3.4.15 Peptidyl dipeptidases 4.9 EC 3.4.16 Serine type carboxypeptidases 4.10 EC 3.4.17 Metallocarboxypeptidases 4.11 EC 3.4.18 Cysteine type carboxypeptidases 4.12 EC 3.4.19 Omega peptidases 4.13 EC 3.4.21: Serine proteases 4.14 EC 3.4.22 Cysteine proteases 4.15 EC 3.4.23 Aspartic endopeptidases 4.16 EC 3.4.24: Metallopeptidases 4.17 EC 3.4.25 Threonine endopeptidases 4.18 EC 3.4.99 Endopeptidases of unknown catalytic mechanism 5 EC 3.5: act on carbon-nitrogen bonds, other than peptide bonds 6 EC 3.6: act on acid anhydrides 7 EC 3.7: act on carbon-carbon bonds 8 EC 3.8: act on halide bonds 9 EC 3.9: act on phosphorus-nitrogen bonds 10 EC 3.10: act on sulfur-nitrogen bonds 11 EC 3.11: act on carbon-phosphorus bonds 12 EC 3.12: act on sulfur-sulfur bonds 13 EC 3.13: act on carbon-sulfur bonds

EC 3.1: Acting on Ester Bonds

EC 3.1.1: Carboxylic Ester Hydrolases

• EC 3.1.1.1: carboxylesterase
• EC 3.1.1.2: arylesterase
• EC 3.1.1.3: triacylglycerol lipase
• EC 3.1.1.4: phospholipase A2
• EC 3.1.1.5: lysophospholipase
• EC 3.1.1.6: acetylesterase
• EC 3.1.1.7: acetylcholinesterase
• EC 3.1.1.8: cholinesterase
• EC 3.1.1.9: deleted
• EC 3.1.1.10: tropinesterase
• EC 3.1.1.11: pectinesterase
• EC 3.1.1.12: deleted
• EC 3.1.1.13: sterol esterase
• EC 3.1.1.14: chlorophyllase
• EC 3.1.1.15: L-arabinonolactonase
• EC 3.1.1.16: deleted, mixture of EC 5.3.3.4 and EC 3.1.1.24
• EC 3.1.1.17: gluconolactonase
• EC 3.1.1.18: deleted, included in EC 3.1.1.17
• EC 3.1.1.19: uronolactonase
• EC 3.1.1.20: tannase
• EC 3.1.1.21: retinyl-palmitate esterase
• EC 3.1.1.22: hydroxybutyrate-dimer hydrolase
• EC 3.1.1.23: acylglycerol lipase
• EC 3.1.1.24: 3-oxoadipate enol-lactonase
• EC 3.1.1.25: 1,4-lactonase
• EC 3.1.1.26: galactolipase
• EC 3.1.1.27: 4-pyridoxolactonase
• EC 3.1.1.28: acylcarnitine hydrolase
• EC 3.1.1.29: aminoacyl-tRNA hydrolase
• EC 3.1.1.30: D-arabinonolactonase
• EC 3.1.1.31: 6-phosphogluconolactonase
• EC 3.1.1.32: phospholipase A1
• EC 3.1.1.33: 6-acetylglucose deacetylase
• EC 3.1.1.34: lipoprotein lipase
• EC 3.1.1.35: dihydrocoumarin hydrolase
• EC 3.1.1.36: limonin-D-ring-lactonase
• EC 3.1.1.37: steroid-lactonase
• EC 3.1.1.38: triacetate-lactonase
• EC 3.1.1.39: actinomycin lactonase
• EC 3.1.1.40: orsellinate-depside hydrolase
• EC 3.1.1.41: cephalosporin-C deacetylase
• EC 3.1.1.42: chlorogenate hydrolase
• EC 3.1.1.43: a-amino-acid esterase
• EC 3.1.1.44: 4-methyloxaloacetate esterase
• EC 3.1.1.45: carboxymethylenebutenolidase
• EC 3.1.1.46: deoxylimonate A-ring-lactonase
• EC 3.1.1.47: 1-alkyl-2-acetylglycerophosphocholine esterase
• EC 3.1.1.48: fusarinine-C ornithinesterase
• EC 3.1.1.49: sinapine esterase
• EC 3.1.1.50: wax-ester hydrolase
• EC 3.1.1.51: phorbol-diester hydrolase
• EC 3.1.1.52: phosphatidylinositol deacylase
• EC 3.1.1.53: sialate O-acetylesterase
• EC 3.1.1.54: acetoxybutynylbithiophene deacetylase
• EC 3.1.1.55: acetylsalicylate deacetylase
• EC 3.1.1.56: methylumbelliferyl-acetate deacetylase
• EC 3.1.1.57: 2-pyrone-4,6-dicarboxylate lactonase
• EC 3.1.1.58: N-acetylgalactosaminoglycan deacetylase
• EC 3.1.1.59: juvenile-hormone esterase
• EC 3.1.1.60: bis(2-ethylhexyl)phthalate esterase
• EC 3.1.1.61: protein-glutamate methylesterase
• EC 3.1.1.62: now EC 3.5.1.47
• EC 3.1.1.63: 11-cis-retinyl-palmitate hydrolase
• EC 3.1.1.64: all-trans-retinyl-palmitate hydrolase
• EC 3.1.1.65: L-rhamnono-1,4-lactonase
• EC 3.1.1.66: 5-(3,4-diacetoxybut-1-ynyl)-2,2'-bithiophene deacetylase
• EC 3.1.1.67: fatty-acyl-ethyl-ester synthase
• EC 3.1.1.68: xylono-1,4-lactonase
• EC 3.1.1.69: now EC 3.5.1.89
• EC 3.1.1.70: cetraxate benzylesterase
• EC 3.1.1.71: acetylalkylglycerol acetylhydrolase
• EC 3.1.1.72: acetylxylan esterase
• EC 3.1.1.73: feruloyl esterase
• EC 3.1.1.74: cutinase
• EC 3.1.1.75: poly(3-hydroxybutyrate) depolymerase
• EC 3.1.1.76: poly(3-hydroxyoctanoate) depolymerase
• EC 3.1.1.77: acyloxyacyl hydrolase
• EC 3.1.1.78: polyneuridine-aldehyde esterase
• EC 3.1.1.79: hormone-sensitive lipase

EC 3.1.2: Thioester Hydrolases

• EC 3.1.2.1: acetyl-CoA hydrolase
• EC 3.1.2.2: palmitoyl-CoA hydrolase
• EC 3.1.2.3: succinyl-CoA hydrolase
• EC 3.1.2.4: 3-hydroxyisobutyryl-CoA hydrolase
• EC 3.1.2.5: hydroxymethylglutaryl-CoA hydrolase
• EC 3.1.2.6: hydroxyacylglutathione hydrolase
• EC 3.1.2.7: glutathione thiolesterase
• EC 3.1.2.8: deleted, included in EC 3.1.2.6
• EC 3.1.2.9: deleted
• EC 3.1.2.10: formyl-CoA hydrolase
• EC 3.1.2.11: acetoacetyl-CoA hydrolase
• EC 3.1.2.12: S-formylglutathione hydrolase
• EC 3.1.2.13: S-succinylglutathione hydrolase
• EC 3.1.2.14: oleoyl-(acyl-carrier-protein) hydrolase
• EC 3.1.2.15: ubiquitin thiolesterase
• EC 3.1.2.16: citrate lyase deacetylase
• EC 3.1.2.17: (S)-methylmalonyl-CoA hydrolase
• EC 3.1.2.18: ADP-dependent short-chain-acyl-CoA hydrolase
• EC 3.1.2.19: ADP-dependent medium-chain-acyl-CoA hydrolase
• EC 3.1.2.20: acyl-CoA hydrolase
• EC 3.1.2.21: dodecanoyl-(acyl-carrier protein) hydrolase
• EC 3.1.2.22: palmitoyl(protein) hydrolase
• EC 3.1.2.23: 4-hydroxybenzoyl-CoA thioesterase
• EC 3.1.2.24: transferred entry now EC 3.13.1.3
• EC 3.1.2.25: phenylacetyl-CoA hydrolase
• EC 3.1.2.26: bile-acid-CoA hydrolase
• EC 3.1.2.27: choloyl-CoA hydrolase

EC 3.1.3: Phosphoric Monoester Hydrolases

• EC 3.1.3.1: alkaline phosphatase
• EC 3.1.3.2: acid phosphatase
• EC 3.1.3.3: phosphoserine phosphatase
• EC 3.1.3.4: phosphatidate phosphatase
• EC 3.1.3.5: 5'-nucleotidase
• EC 3.1.3.6: 3'-nucleotidase
• EC 3.1.3.7: 3'(2'),5'-bisphosphate nucleotidase
• EC 3.1.3.8: 3-phytase
• EC 3.1.3.9: glucose-6-phosphatase
• EC 3.1.3.10: glucose-1-phosphatase
• EC 3.1.3.11: fructose-bisphosphatase
• EC 3.1.3.12: trehalose-phosphatase
• EC 3.1.3.13: bisphosphoglycerate phosphatase
• EC 3.1.3.14: methylphosphothioglycerate phosphatase
• EC 3.1.3.15: histidinol-phosphatase
• EC 3.1.3.16: phosphoprotein phosphatase
• EC 3.1.3.17: (phosphorylase) phosphatase
• EC 3.1.3.18: phosphoglycolate phosphatase
• EC 3.1.3.19: glycerol-2-phosphatase
• EC 3.1.3.20: phosphoglycerate phosphatase
• EC 3.1.3.21: glycerol-1-phosphatase
• EC 3.1.3.22: mannitol-1-phosphatase
• EC 3.1.3.23: sugar-phosphatase
• EC 3.1.3.24: sucrose-phosphatase
• EC 3.1.3.25: inositol-phosphate phosphatase
• EC 3.1.3.26: 4-phytase
• EC 3.1.3.27: phosphatidylglycerophosphatase
• EC 3.1.3.28: ADP-phosphoglycerate phosphatase
• EC 3.1.3.29: N-acylneuraminate-9-phosphatase
• EC 3.1.3.30: deleted, included in EC 3.1.3.31
• EC 3.1.3.31: nucleotidase
• EC 3.1.3.32: polynucleotide 3'-phosphatase
• EC 3.1.3.33: polynucleotide 5'-phosphatase
• EC 3.1.3.34: deoxynucleotide 3'-phosphatase
• EC 3.1.3.35: thymidylate 5'-phosphatase
• EC 3.1.3.36: phosphoinositide 5-phosphatase
• EC 3.1.3.37: sedoheptulose-bisphosphatase
• EC 3.1.3.38: 3-phosphoglycerate phosphatase
• EC 3.1.3.39: streptomycin-6-phosphatase
• EC 3.1.3.40: guanidinodeoxy-scyllo-inositol-4-phosphatase
• EC 3.1.3.41: 4-nitrophenylphosphatase
• EC 3.1.3.42: (glycogen-synthase-D) phosphatase
• EC 3.1.3.43: (pyruvate dehydrogenase (acetyl-transferring))-phosphatase
• EC 3.1.3.44: (acetyl-CoA carboxylase)-phosphatase
• EC 3.1.3.45: 3-deoxy-manno-octulosonate-8-phosphatase
• EC 3.1.3.46: fructose-2,6-bisphosphate 2-phosphatase
• EC 3.1.3.47: (hydroxymethylglutaryl-CoA reductase (NADPH))-phosphatase
• EC 3.1.3.48: protein-tyrosine-phosphatase
• EC 3.1.3.49: (pyruvate kinase)-phosphatase
• EC 3.1.3.50: sorbitol-6-phosphatase
• EC 3.1.3.51: dolichyl-phosphatase
• EC 3.1.3.52: (3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring))-phosphatase
• EC 3.1.3.53: (myosin-light-chain) phosphatase
• EC 3.1.3.54: fructose-2,6-bisphosphate 6-phosphatase
• EC 3.1.3.55: caldesmon-phosphatase
• EC 3.1.3.56: inositol-polyphosphate 5-phosphatase
• EC 3.1.3.57: inositol-1,4-bisphosphate 1-phosphatase
• EC 3.1.3.58: sugar-terminal-phosphatase
• EC 3.1.3.59: alkylacetylglycerophosphatase
• EC 3.1.3.60: phosphoenolpyruvate phosphatase
• EC 3.1.3.61: deleted
• EC 3.1.3.62: multiple inositol-polyphosphate phosphatase
• EC 3.1.3.63: 2-carboxy-D-arabinitol-1-phosphatase
• EC 3.1.3.64: phosphatidylinositol-3-phosphatase
• EC 3.1.3.65: now with EC 3.1.3.64
• EC 3.1.3.66: phosphatidylinositol-3,4-bisphosphate 4-phosphatase
• EC 3.1.3.67: phosphatidylinositol-3,4,5-trisphosphate 3-phosphatase
• EC 3.1.3.68: 2-deoxyglucose-6-phosphatase
• EC 3.1.3.69: glucosylglycerol 3-phosphatase
• EC 3.1.3.70: mannosyl-3-phosphoglycerate phosphatase
• EC 3.1.3.71: 2-phosphosulfolactate phosphatase
• EC 3.1.3.72: 5-phytase
• EC 3.1.3.73: a-ribazole phosphatase
• EC 3.1.3.74: pyridoxal phosphatase
• EC 3.1.3.75: phosphoethanolamine/phosphocholine phosphatase

EC 3.1.4: Phosphoric Diester Hydrolases

• EC 3.1.4.1: phosphodiesterase I
• EC 3.1.4.2: glycerophosphocholine phosphodiesterase
• EC 3.1.4.3: lecithinase C
• EC 3.1.4.4: phospholipase D
• EC 3.1.4.5: now EC 3.1.21.1
• EC 3.1.4.6: now EC 3.1.22.1
• EC 3.1.4.7: now EC 3.1.31.1
• EC 3.1.4.8: now EC 3.1.27.3
• EC 3.1.4.9: now EC 3.1.30.2
• EC 3.1.4.10: now EC 4.6.1.13
• EC 3.1.4.11: phosphoinositide phospholipase C
• EC 3.1.4.12: sphingomyelin phosphodiesterase
• EC 3.1.4.13: serine-ethanolaminephosphate phosphodiesterase
• EC 3.1.4.14: (acyl-carrier-protein) phosphodiesterase
• EC 3.1.4.15: adenylyl-(glutamate—ammonia ligase) hydrolase
• EC 3.1.4.16: 2',3'-cyclic-nucleotide 2'-phosphodiesterase
• EC 3.1.4.17: 3',5'-cyclic-nucleotide phosphodiesterase
• EC 3.1.4.18: now EC 3.1.16.1
• EC 3.1.4.19: now EC 3.1.13.3
• EC 3.1.4.20: now EC 3.1.13.1
• EC 3.1.4.21: now EC 3.1.30.1
• EC 3.1.4.22: now EC 3.1.27.5
• EC 3.1.4.23: now EC 3.1.27.1
• EC 3.1.4.24: deleted
• EC 3.1.4.25: now EC 3.1.11.1
• EC 3.1.4.26: deleted
• EC 3.1.4.27: now EC 3.1.11.2
• EC 3.1.4.28: now EC 3.1.11.3
• EC 3.1.4.29: deleted
• EC 3.1.4.30: now EC 3.1.21.2
• EC 3.1.4.31: now EC 3.1.11.4
• EC 3.1.4.32: deleted
• EC 3.1.4.33: deleted
• EC 3.1.4.34: deleted
• EC 3.1.4.35: 3',5'-cyclic-GMP phosphodiesterase
• EC 3.1.4.36: now with EC 3.1.4.43
• EC 3.1.4.37: 2',3'-cyclic-nucleotide 3'-phosphodiesterase
• EC 3.1.4.38: glycerophosphocholine cholinephosphodiesterase
• EC 3.1.4.39: alkylglycerophosphoethanolamine phosphodiesterase
• EC 3.1.4.40: CMP-N-acylneuraminate phosphodiesterase
• EC 3.1.4.41: sphingomyelin phosphodiesterase D
• EC 3.1.4.42: glycerol-1,2-cyclic-phosphate 2-phosphodiesterase
• EC 3.1.4.43: glycerophosphoinositol inositolphosphodiesterase
• EC 3.1.4.44: glycerophosphoinositol glycerophosphodiesterase
• EC 3.1.4.45: N-acetylglucosamine-1-phosphodiester a-N-acetylglucosaminidase
• EC 3.1.4.46: glycerophosphodiester phosphodiesterase
• EC 3.1.4.47: now EC 4.6.1.14
• EC 3.1.4.48: dolichylphosphate-glucose phosphodiesterase
• EC 3.1.4.49: dolichylphosphate-mannose phosphodiesterase
• EC 3.1.4.50: glycosylphosphatidylinositol phospholipase D
• EC 3.1.4.51: glucose-1-phospho-D-mannosylglycoprotein phosphodiesterase

EC 3.1.5: Triphosphoric Monoester Hydrolases

• EC 3.1.5.1: dGTPase

EC 3.1.6: Sulfuric Ester Hydrolases

• EC 3.1.6.1: arylsulfatase
• EC 3.1.6.2: steryl-sulfatase
• EC 3.1.6.3: glycosulfatase
• EC 3.1.6.4: N-acetylgalactosamine-6-sulfatase
• EC 3.1.6.5: deleted
• EC 3.1.6.6: choline-sulfatase
• EC 3.1.6.7: cellulose-polysulfatase
• EC 3.1.6.8: cerebroside-sulfatase
• EC 3.1.6.9: chondro-4-sulfatase
• EC 3.1.6.10: chondro-6-sulfatase
• EC 3.1.6.11: disulfoglucosamine-6-sulfatase
• EC 3.1.6.12: N-acetylgalactosamine-4-sulfatase
• EC 3.1.6.13: iduronate-2-sulfatase
• EC 3.1.6.14: N-acetylglucosamine-6-sulfatase
• EC 3.1.6.15: N-sulfoglucosamine-3-sulfatase
• EC 3.1.6.16: monomethyl-sulfatase
• EC 3.1.6.17: D-lactate-2-sulfatase
• EC 3.1.6.18: glucuronate-2-sulfatase

EC 3.1.7: Diphosphoric Monoester Hydrolases

• EC 3.1.7.1: prenyl-diphosphatase
• EC 3.1.7.2: guanosine-3',5'-bis(diphosphate) 3'-diphosphatase
• EC 3.1.7.3: monoterpenyl-diphosphatase

EC 3.1.8: Phosphoric Triester Hydrolases

• EC 3.1.8.1: aryldialkylphosphatase
• EC 3.1.8.2: diisopropyl-fluorophosphatase

EC 3.1.11: Exodeoxyribonucleases Producing 5'-Phosphomonoesters

• EC 3.1.11.1: exodeoxyribonuclease I
• EC 3.1.11.2: exodeoxyribonuclease III
• EC 3.1.11.3: exodeoxyribonuclease (lambda-induced)
• EC 3.1.11.4: exodeoxyribonuclease (phage SP3-induced)
• EC 3.1.11.5: exodeoxyribonuclease V
• EC 3.1.11.6: exodeoxyribonuclease VII

EC 3.1.13: Exoribonucleases Producing 5'-Phosphomonoesters

• EC 3.1.13.1: exoribonuclease II
• EC 3.1.13.2: exoribonuclease H
• EC 3.1.13.3: oligonucleotidase
• EC 3.1.13.4: poly(A)-specific ribonuclease

EC 3.1.14: Exoribonucleases Producing 3'-Phosphomonoesters

• EC 3.1.14.1: yeast ribonuclease

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

• EC 3.1.15.1: venom exonuclease

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

• EC 3.1.16.1: spleen exonuclease

EC 3.1.21: Endodeoxyribonucleases Producing 5'-Phosphomonoesters

• EC 3.1.21.1: deoxyribonuclease I
• EC 3.1.21.2: deoxyribonuclease IV (phage-T4-induced)
• EC 3.1.21.3: type I site-specific deoxyribonuclease
• EC 3.1.21.4: type II site-specific deoxyribonuclease
• EC 3.1.21.5: type III site-specific deoxyribonuclease
• EC 3.1.21.6: CC-preferring endodeoxyribonuclease
• EC 3.1.21.7: deoxyribonuclease V

EC 3.1.22: Endodeoxyribonucleases Producing 3'-Phosphomonoesters

• EC 3.1.22.1: deoxyribonuclease II
• EC 3.1.22.2: Aspergillus deoxyribonuclease K1
• EC 3.1.22.3: now EC 3.1.21.7
• EC 3.1.22.4: crossover junction endodeoxyribonuclease
• EC 3.1.22.5: deoxyribonuclease X

EC 3.1.23: and EC 3.1.24 now EC 3.1.21.3, EC 3.1.21.4 and EC 3.1.21.5

EC 3.1.25: Site-Specific Endodeoxyribonucleases Specific for Altered Bases

• EC 3.1.25.1: deoxyribonuclease (pyrimidine dimer)
• EC 3.1.25.2: now EC 4.2.99.18

EC 3.1.26: Endoribonucleases Producing 5'-Phosphomonoesters

• EC 3.1.26.1: Physarum polycephalum ribonuclease
• EC 3.1.26.2: ribonuclease alpha
• EC 3.1.26.3: ribonuclease III
• EC 3.1.26.4: calf thymus ribonuclease H
• EC 3.1.26.5: ribonuclease P
• EC 3.1.26.6: ribonuclease IV
• EC 3.1.26.7: ribonuclease P4
• EC 3.1.26.8: ribonuclease M5
• EC 3.1.26.9: ribonuclease (poly-(U)-specific)
• EC 3.1.26.10: ribonuclease IX
• EC 3.1.26.11: tRNase Z

EC 3.1.27: Endoribonucleases Producing 3'-Phosphomonoesters

• EC 3.1.27.1: ribonuclease T2
• EC 3.1.27.2: Bacillus subtilis ribonuclease
• EC 3.1.27.3: ribonuclease T1
• EC 3.1.27.4: ribonuclease U2
• EC 3.1.27.5: pancreatic ribonuclease
• EC 3.1.27.6: Enterobacter ribonuclease
• EC 3.1.27.7: ribonuclease F
• EC 3.1.27.8: ribonuclease V
• EC 3.1.27.9: tRNA-intron endonuclease
• EC 3.1.27.10: rRNA endonuclease

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

• EC 3.1.30.1: Aspergillus nuclease S1
• EC 3.1.30.2: Serratia marcescens nuclease

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

• EC