List of EC numbers (EC 4)

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This list contains a list of EC numbers for the fourth group, EC 4, lyases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology. All official information is tabulated at the website of the committee.[1] The database is developed and maintained by Andrew McDonald.[2]

EC 4.1: Carbon-Carbon Lyases[edit]

EC 4.1.1: Carboxy-lyases[edit]

*No Wikipedia article

EC 4.1.2: Aldehyde-lyases[edit]

*No Wikipedia article

EC 4.1.3: Oxo-Acid-Lyases[edit]

*No Wikipedia article

EC 4.1.99: Other Carbon-Carbon Lyases[edit]

*No Wikipedia article

EC 4.2: Carbon-Oxygen Lyases[edit]

EC 4.2.1: Hydro-lyases[edit]

*No Wikipedia article

EC 4.2.2: Acting on Polysaccharides[edit]

*No Wikipedia article

EC 4.2.3: Acting on phosphates[edit]

Enzymes from EC on have no Wikipedia articles
  • EC sclareol synthase
  • EC 7-epizingiberene synthase [(2Z,6Z)-farnesyl diphosphate cyclizing]
  • EC kunzeaol synthase
  • EC geranyllinalool synthase
  • EC ophiobolin F synthase
  • EC cyclooctat-9-en-7-ol synthase
  • EC pimaradiene synthase
  • EC cembrene C synthase
  • EC nephthenol synthase
  • EC cembrene A synthase
  • EC pentamethylcyclopentadecatrienol synthase
  • EC 2-epi-5-epi-valiolone synthase
  • EC (5-formylfuran-3-yl)methyl phosphate synthase
  • EC demethyl-4-deoxygadusol synthase
  • EC 2-epi-valiolone synthase
  • EC hydroxysqualene synthase
  • EC (+)-isoafricanol synthase
  • EC (–)-spiroviolene synthase
  • EC tsukubadiene synthase
  • EC (2S,3R,6S,9S)-(–)-protoillud-7-ene synthase
  • EC (3S)-(+)-asterisca-2(9),6-diene synthase
  • EC (–)-α-amorphene synthase
  • EC (+)-corvol ether B synthase
  • EC (+)-eremophilene synthase
  • EC (1R,4R,5S)-(–)-guaia-6,10(14)-diene synthase
  • EC (+)-(1E,4E,6S,7R)-germacra-1(10),4-dien-6-ol synthase
  • EC dolabella-3,7-dien-18-ol synthase
  • EC dolathalia-3,7,11-triene synthase
  • EC 7-epi-α-eudesmol synthase
  • EC 4-epi-cubebol synthase
  • EC (+)-corvol ether A synthase
  • EC 10-epi-juneol synthase
  • EC τ-cadinol synthase
  • EC (2E,6E)-hedycaryol synthase
  • EC 10-epi-cubebol synthase
  • EC sesterfisherol synthase
  • EC β-thujene synthase
  • EC stellata-2,6,19-triene synthase
  • EC guaia-4,6-diene synthase
  • EC pseudolaratriene synthase
  • EC selina-4(15),7(11)-diene synthase
  • EC pristinol synthase
  • EC nezukol synthase
  • EC 5-hydroxy-α-gurjunene synthase
  • EC ent-atiserene synthase
  • EC ent-13-epi-manoyl oxide synthase
  • EC (2Z,6E)-hedycaryol synthase
  • EC β-geranylfarnesene synthase
  • EC 9,13-epoxylabd-14-ene synthase
  • EC manoyl oxide synthase
  • EC cycloaraneosene synthase
  • EC labda-7,13(16),14-triene synthase
  • EC (12E)-labda-8(17),12,14-triene synthase
  • EC (–)-drimenol synthase
  • EC rhizathalene A synthase
  • EC dolabradiene synthase
  • EC eudesmane-5,11-diol synthase
  • EC α-selinene synthase
  • EC (–)-5-epieremophilene synthase
  • EC β-pinacene synthase
  • EC hydropyrene synthase
  • EC hydropyrenol synthase
  • EC isoelisabethatriene synthase
  • EC valerianol synthase
  • EC sodorifen synthase

EC 4.2.99: Other Carbon-Oxygen Lyases[edit]

  • EC Now EC, hyaluronate lyase
  • EC Now EC, threonine synthase
  • EC Now EC, pectate lyase
  • EC EC, poly(β-D-mannuronate) lyase
  • EC deleted
  • EC Now included with EC (chondroitin ABC lyase) and EC (chondroitin AC lyase)
  • EC Now EC, ethanolamine-phosphate phospho-lyase
  • EC Now EC, cysteine synthase
  • EC Now EC, cystathionine γ-synthase
  • EC EC, O-acetylhomoserine aminocarboxypropyltransferase
  • EC Now EC, methylglyoxal synthase
  • EC carboxymethyloxysuccinate lyase
  • EC Now EC, zeatin 9-aminocarboxyethyltransferase
  • EC Now EC, β-pyrazolylalanine synthase
  • EC EC, L-mimosine synthase
  • EC Now EC, uracilylalanine synthase]
  • EC Listed as EC, β-pyrazolylalanine synthase
  • EC DNA-(apurinic or apyrimidinic site) lyase
  • EC Now EC, 2-hydroxypropyl-CoM lyase
  • EC 2-succinyl-6-hydroxy-2,4-cyclohexadiene-1-carboxylate synthase
  • EC isochorismate lyase
  • EC tuliposide A-converting enzyme *
  • EC tuliposide B-converting enzyme *
  • EC thebaine synthase *
*No Wikipedia article

EC 4.3: Carbon-Nitrogen Lyases[edit]

EC 4.3.1: Ammonia-Lyases[edit]

*No Wikipedia article

EC 4.3.2: Amidine-Lyases[edit]

*No Wikipedia article

EC 4.3.3: Amine-Lyases[edit]

EC 4.3.99: Other Carbon-Nitrogen Lyases[edit]

*No Wikipedia article

EC 4.4: Carbon-Sulfur Lyases[edit]

EC 4.4.1: Carbon-sulfur lyases (only sub-subclass identified to date)[edit]

*No Wikipedia article

EC 4.5: Carbon-Halide Lyases[edit]

EC 4.5.1: Carbon-halide lyases (only sub-subclass identified to date)[edit]

EC 4.6: Phosphorus-Oxygen Lyases[edit]

EC 4.6.1: Phosphorus-oxygen lyases (only sub-subclass identified to date)[edit]

*No Wikipedia article

EC 4.99: Other Lyases[edit]

EC 4.99.1: Sole sub-subclass for lyases that do not belong in the other subclasses[edit]

*No Wikipedia article


  1. ^ "ExplorEnz – The Enzyme Database".
  2. ^ McDonald, A.G.; Boyce, S.; K.F., Tipton (2009). "ExplorEnz: the primary source of the IUBMB enzyme list". Nucleic Acids Res. 37: D593–D597. doi:10.1093/nar/gkn582.