1. 3.1.1.65 enzyme   L-rhamnonate dehydratase
                      L-rhamno-gamma-lactonase
                      L-rhamnono-gamma-lactonase
                      L-rhamnono-1,4-lactonase
                      L-rhamnono-1,4-lactone lactonohydrolase

2. 4.2.1.1 enzyme   carbonate dehydratase
                      anhydrase
                      carboxyanhydrase
                      carbonate anhydrase
                      carbonic anhydrase
                      carbonate hydro-lyase
                      carbonic acid anhydrase
                      carbonic anhydrase A

3. 4.2.1.10 enzyme   dehydroquinate dehydratase
                      3-dehydroquinate dehydratase
                      5-dehydroquinate dehydratase
                      DHQase
                      dehydroquinase
                      3-dehydroquinase
                      5-dehydroquinase
                      3-dehydroquinate hydrolase
                      3-dehydroquinate hydro-lyase
                      5-dehydroquinate hydro-lyase

4. 4.2.1.105 enzyme   2-hydroxyisoflavanone dehydratase
                      2,7,4'-trihydroxyisoflavanone hydro-lyase

5. 4.2.1.108 enzyme   N-acetyldiaminobutanoate dehydratase
                      N-acetyldiaminobutyrate dehydratase
                      EctC
                      ectoine synthase
                      L-ectoine synthase
                      4-N-acetyl-L-2,4-diaminobutanoate hydro-lyase (L-ectoine-forming)

6. 4.2.1.11 enzyme   2-phosphoglycerate dehydratase
                      2-phosphoglyceric dehydratase
                      enolase
                      gamma-enolase
                      phosphoenolpyruvate hydratase
                      phosphopyruvate hydratase
                      2-phosphoglycerate enolase
                      14-3-2-protein
                      nervous-system specific enolase
                      2-phospho-D-glycerate hydro-lyase

7. 4.2.1.12 enzyme   phosphogluconate dehydratase
                      6-phosphogluconate dehydratase
                      gluconate 6-phosphate dehydratase
                      gluconate-6-phosphate dehydratase
                      6-phosphogluconate dehydrase
                      6-phosphogluconic dehydrase
                      6-phospho-D-gluconate hydro-lyase

8. 4.2.1.19 enzyme   IGP dehydratase
                      imidazoleglycerol-phosphate dehydratase
                      D-erythro-1-(imidazol-4-yl)glycerol 3-phosphate hydro-lyase

9. 4.2.1.24 enzyme   aminolevulinate dehydratase
                      aminolevulinic dehydratase
                      delta-aminolevulinate dehydratase
                      delta-aminolevulinic dehydratase
                      5-levulinic acid dehydratase
                      delta-aminolevulinic acid dehydratase
                      porphobilinogen synthase
                      delta-aminolevulinic acid dehydrase
                      5-aminolevulinate hydro-lyase (adding 5-aminolevulinate and cyclizing)

10. 4.2.1.25 enzyme   L-arabinonate dehydratase
                      L-arabonate dehydratase
                      L-arabonate dehydrase
                      L-arabinonate hydro-lyase

11. 4.2.1.28 enzyme   dioldehydratase
                      diol dehydratase
                      propanediol dehydratase
                      1,2-propanediol dehydratase
                      adenosylcobalamin-dependent diol dehydratase
                      diol dehydrase
                      propanediol dehydrase
                      coenzyme B12-dependent diol dehydrase
                      meso-2,3-butanediol dehydrase
                      DL-1,2-propanediol hydro-lyase
                      propane-1,2-diol hydro-lyase

12. 4.2.1.30 enzyme   glycerol dehydratase
                      glycerol dehydrase
                      glycerol hydro-lyase

13. 4.2.1.32 enzyme   tartrate dehydratase
                      L(+)-tartrate dehydratase
                      L-tartrate dehydratase
                      L-(+)-tartaric acid dehydratase
                      tartaric acid dehydrase
                      (R,R)-tartrate hydro-lyase

14. 4.2.1.33 enzyme   3-isopropylmalate dehydratase
                      beta-isopropylmalate dehydratase
                      isopropylmalate isomerase
                      alpha-isopropylmalate isomerase
                      (2R,3S)-3-isopropylmalate hydro-lyase

15. 4.2.1.34 enzyme   citramalate dehydratase
                      (S)-2-methylmalate dehydratase
                      mesaconase
                      mesaconate hydratase
                      mesaconate mesaconase
                      (+)-citramalate hydro-lyase
                      (+)-citramalic hydro-lyase
                      L-citramalate hydrolase
                      (S)-2-methylmalate hydro-lyase

16. 4.2.1.35 enzyme   (R)-2-methylmalate dehydratase
                      citraconase
                      citraconate hydratase
                      (-)-citramalate hydro-lyase
                      citramalate hydro-lyase
                      (R)-2-methylmalate hydro-lyase

17. 4.2.1.39 enzyme   gluconate dehydratase
                      D-gluconate dehydratase"
                      D-gluconate hydro-lyase

18. 4.2.1.4 enzyme   citrate dehydratase
                      citrate hydro-lyase

19. 4.2.1.40 enzyme   glucarate dehydratase
                      D-glucarate dehydratase
                      D-glucarate hydro-lyase

20. 4.2.1.41 enzyme   deoxyketoglucarate dehydratase
                      5-dehydro-4-deoxyglucarate dehydratase
                      5-keto-4-deoxy-glucarate dehydratase
                      D-4-deoxy-5-ketoglucarate hydro-lyase
                      5-dehydro-4-deoxy-D-glucarate hydro-lyase (decarboxylating)

21. 4.2.1.42 enzyme   galactarate dehydratase
                      D-galactarate hydro-lyase

22. 4.2.1.44 enzyme   ketoinositol dehydratase
                      inosose 2,3-dehydratase
                      myo-inosose-2 dehydratase
                      2,4,6/3,5-pentahydroxycyclohexanone hydro-lyase

23. 4.2.1.5 enzyme   arabinonate dehydratase
                      D-arabinonate hydro-lyase

24. 4.2.1.51 enzyme   prephenate dehydratase
                      prephenate hydro-lyase (decarboxylating)

25. 4.2.1.6 enzyme   galactonate dehydratase
                      D-galactonate dehydratase
                      D-galactonate dehydrase
                      D-galactonate hydro-lyase

26. 4.2.1.66 enzyme   formamide dehydratase
                      cyanide hydratase
                      formamide hydro-lyase

27. 4.2.1.67 enzyme   D-fuconate dehydratase
                      D-fuconate hydro-lyase

28. 4.2.1.68 enzyme   L-fuconate dehydratase
                      L-fuconate hydro-lyase

29. 4.2.1.7 enzyme   altronate dehydratase
                      D-altronate hydro-lyase

30. 4.2.1.73 enzyme   protoaphin dehydratase
                      protoaphin dehydratase (cyclizing)
                      protoaphin-aglucone dehydratase (cyclizing)
                      protoaphin-aglucone hydro-lyase (cyclizing)

31. 4.2.1.79 enzyme   2-methylcitrate dehydratase
                      2-methylcitrate hydro-lyase
                      2-hydroxybutane-1,2,3-tricarboxylate hydro-lyase

32. 4.2.1.8 enzyme   mannonate dehydratase
                      altronate hydrolase
                      mannonate hydrolyase
                      mannonic hydrolase
                      D-mannonate hydrolyase
                      altronic hydro-lyase
                      D-mannonate hydro-lyase

33. 4.2.1.81 enzyme   D(-)-tartrate dehydratase
                      D-tartrate dehydratase
                      (S,S)-tartrate hydro-lyase

34. 4.2.1.82 enzyme   xylonate dehydratase
                      D-xylonate dehydratase
                      D-xylo-aldonate dehydratase
                      D-xylonate hydro-lyase

35. 4.2.1.87 enzyme   octopamine dehydratase
                      octopamine hydrolyase
                      octopamine hydro-lyase (deaminating)

36. 4.2.1.88 enzyme   synephrine dehydratase
                      1-(4-hydroxyphenyl)-2-(methylamino)ethanol hydro-lyase (methylamine-forming)

37. 4.2.1.89 enzyme   carnitine dehydratase
                      L-carnitine hydro-lyase

38. 4.2.1.9 enzyme   acetohydroxyacid dehydratase
                      dihydroxy-acid dehydratase
                      2,3-dihydroxyisovalerate dehydratase
                      alpha,beta-dihydroxyacid dehydratase
                      alpha,beta-dihydroxyisovalerate dehydratase
                      DHAD
                      dihydroxy acid dehydrase
                      2,3-dihydroxy-acid hydro-lyase

39. 4.2.1.90 enzyme   L-rhamnonate dehydratase
                      L-rhamnonate hydro-lyase

40. 4.2.1.91 enzyme   arogenate dehydratase
                      carboxycyclohexadienyl dehydratase
                      L-arogenate hydro-lyase (decarboxylating)

41. 4.2.1.92 enzyme   hydroperoxide dehydratase
                      HPI
                      hydroperoxide isomerase
                      linoleate hydroperoxide isomerase
                      linoleic acid hydroperoxide isomerase
                      (9Z,11E,14Z)-(13S)-hydroperoxyoctadeca-9,11,14-trienoate 12,13-hydro-lyase

42. 4.2.1.94 enzyme   scytalone dehydratase
                      scytalone 7,8-hydro-lyase

43. 4.2.1.96 enzyme   4a-hydroxytetrahydrobiopterin dehydratase
                      4alpha-hydroxy-tetrahydropterin dehydratase
                      pterin-4alpha-carbinolamine dehydratase
                      4a-hydroxytetrahydrobiopterin hydro-lyase

44. 4.2.1.99 enzyme   2-methylisocitrate dehydratase
                      (2S,3R)-3-hydroxybutane-1,2,3-tricarboxylate hydro-lyase

45. 4.3.1.17 enzyme   L-hydroxyaminoacid dehydratase
                      L-serine dehydratase
                      serine deaminase
                      L-serine deaminase
                      L-serine ammonia-lyase
                      L-serine ammonia-lyase
                      L-serine hydro-lyase (deaminating)

46. 4.3.1.18 enzyme   D-hydroxyaminoacid dehydratase
                      D-serine dehydratase (deaminating)
                      D-hydroxy amino acid dehydratase
                      D-serine deaminase
                      D-serine dehydrase
                      D-serine hydrolase
                      D-serine ammonia-lyase
                      D-serine ammonia-lyase
                      D-serine hydro-lyase (deaminating)

47. 4.3.1.19 enzyme   threonine dehydratase
                      L-serine dehydratase
                      L-threonine dehydratase
                      serine deaminase
                      threonine deaminase
                      threonine dehydrase
                      L-threonine deaminase
                      threonine ammonia-lyase
                      L-threonine ammonia-lyase
                      L-threonine hydro-lyase (deaminating)

48. 4.3.1.20 enzyme   3-hydroxyaspartate dehydratase
                      erythro-3-hydroxyaspartate dehydratase
                      erythro-beta-hydroxyaspartate dehydratase
                      erythro-3-hydroxyaspartate ammonia-lyase
                      erythro-3-hydroxy-L(s)-aspartate ammonia-lyase
                      erythro-3-hydroxy-L(s)-aspartate hydro-lyase (deaminating)

49. 4.3.1.9 enzyme   aminodeoxygluconate dehydratase
                      D-glucosaminate dehydratase
                      glucosaminic dehydrase
                      aminodeoxygluconate ammonia-lyase
                      glucosaminate ammonia-lyase
                      D-glucosaminic acid dehydrase
                      D-glucosaminate ammonia-lyase (isomerizing)
                      2-amino-2-deoxy-D-gluconate ammonia-lyase
                      2-amino-2-deoxy-D-gluconate hydro-lyase (deaminating)

50. 4.4.1.1 enzyme   homoserine dehydratase
                      cystalysin
                      cystathionase
                      cysteine desulfhydrase
                      cysteine lyase
                      cystine desulfhydrase
                      gamma-CTL
                      gamma-cystathionase
                      homoserine deaminase
                      cystathionine gamma-lyase
                      homoserine deaminase-cystathionase
                      L-cystathionine cysteine-lyase (deaminating)

51. 4.99.1.6 enzyme   indoleacetaldoxime dehydratase
                      indoleacetaldoxime hydro-lyase
                      3-indoleacetaldoxime hydro-lyase
                      indole-3-acetaldoxime hydro-lyase
                      indole-3-acetaldehyde-oxime hydro-lyase

52. 4.99.1.7 enzyme   PAOx dehydratase
                      arylacetaldoxime dehydratase
                      phenylacetaldoxime dehydratase
                      OxdB
                      (Z)-phenylacetaldehyde-oxime hydro-lyase

53. 4.2.1.109 enzyme   1-PMT-ribulose dehydratase
                      methylthioribulose 1-phosphate dehydratase
                      S-methyl-5-thio-D-ribulose-1-phosphate hydro-lyase

54. 4.2.1.17 enzyme   D-3-hydroxyacyl-CoA dehydratase
                      ECH
                      crotonase
                      crotonyl hydrase
                      enoyl hydrase
                      beta-hydroxyacid dehydrase
                      enol-CoA hydratase
                      enoyl-CoA hydratase
                      2-enoyl-CoA hydratase
                      acyl coenzyme A hydrase
                      beta-hydroxyacyl-CoA dehydrase
                      enoyl coenzyme A hydratase
                      hydratase, enoyl coenzyme A
                      unsaturated acyl-CoA hydratase
                      2-octenoyl coenzyme A hydrase
                      enoyl coenzyme A hydrase (D)
                      enoyl coenzyme A hydrase (L)
                      short-chain enoyl-CoA hydratase
                      trans-2-enoyl-CoA hydratase
                      (3S)-3-hydroxyacyl-CoA hydro-lyase
                      short chain enoyl coenzyme A hydratase

55. 4.2.1.27 enzyme   malonate-semialdehyde dehydratase
                      acetylenecarboxylate hydratase
                      acetylenemonocarboxylate hydrase
                      acetylenemonocarboxylate hydratase
                      alkynoate hydratase
                      acetylenemonocarboxylic acid hydrase
                      3-oxopropanoate hydro-lyase

56. 4.2.1.45 enzyme   CDP-glucose 4,6-dehydratase
                      cytidine diphosphoglucose oxidoreductase
                      CDP-glucose 4,6-hydro-lyase

57. 4.2.1.46 enzyme   dTDP-glucose 4,6-dehydratase
                      TDP-glucose oxidoreductase
                      thymidine diphosphoglucose oxidoreductase
                      dTDP-glucose 4,6-hydro-lyase

58. 4.2.1.47 enzyme   GDP-D-mannose dehydratase
                      GDP-mannose 4,6-dehydratase
                      guanosine diphosphomannose 4,6-dehydratase
                      GDP-D-mannose 4,6-dehydratase
                      Gmd
                      guanosine diphosphomannose oxidoreductase
                      GDP-mannose 4,6-hydro-lyase
                      guanosine 5'-diphosphate-D-mannose oxidoreductase

59. 4.2.1.54 enzyme   lactoyl-CoA dehydratase
                      lactyl CoA dehydratase
                      lactoyl coenzyme A dehydratase
                      acrylyl coenzyme A hydratase
                      lactoyl-CoA hydro-lyase
                      lactyl-coenzyme A dehydrase

60. 4.2.1.55 enzyme   3-hydroxybutyryl-CoA dehydratase
                      D-3-hydroxybutyryl-CoA dehydratase
                      D-3-hydroxybutyryl coenzyme A dehydratase
                      enoyl coenzyme A hydrase (D)
                      (3R)-3-hydroxybutanoyl-CoA hydro-lyase

61. 4.2.1.62 enzyme   5alpha-hydroxysteroid dehydratase
                      5alpha-ergosta-7,22-diene-3beta,5-diol 5,6-hydro-lyase

62. 4.2.1.76 enzyme   UDP-glucose 4,6-dehydratase
                      UDP-D-glucose oxidoreductase
                      UDP-D-glucose-4,6-hydrolyase
                      UDP-glucose 4,6-hydro-lyase

63. 4.2.1.77 enzyme   trans-L-3-hydroxyproline dehydratase
                      trans-L-3-hydroxyproline hydro-lyase

64. 4.2.1.98 enzyme   16alpha-hydroxyprogesterone dehydratase
                      16alpha-dehydroxylase
                      hydroxyprogesterone dehydroxylase
                      16alpha-hydroxyprogesterone dehydroxylase
                      16alpha-hydroxyprogesterone hydro-lyase

65. 4.3.1.16 enzyme   threo-3-hydroxyaspartate dehydratase
                      L-threo-3-hydroxyaspartate dehydratase
                      threo-3-hydroxyaspartate ammonia-lyase
                      threo-3-hydroxy-L-aspartate ammonia-lyase

66. 4.99.1.5 enzyme   aliphatic aldoxime dehydratase
                      OxdA
                      aliphatic aldoxime hydro-lyase

67. 4.2.1.106 enzyme   bile-acid 7alpha-dehydratase
                      7alpha,12alpha-dihydroxy-3-oxochol-4-enoate hydro-lyase

68. 4.2.1.43 enzyme   2-dehydro-3-deoxy-L-arabinonate dehydratase
                      2-keto-3-deoxy-L-arabinonate dehydratase
                      2-dehydro-3-deoxy-L-arabinonate hydro-lyase

69. 4.2.1.59 enzyme   beta-hydroxyoctanoyl thioester dehydratase
                      3-hydroxyoctanoyl-[acyl-carrier-protein] dehydratase
                      D-3-hydroxyoctanoyl-[acyl carrier protein] dehydratase
                      D-3-hydroxyoctanoyl-acyl carrier protein dehydratase
                      beta-hydroxyoctanoyl-ACP-dehydrase
                      beta-hydroxyoctanoyl-acyl carrier protein dehydrase
                      (3R)-3-hydroxyoctanoyl-[acyl-carrier-protein] hydro-lyase

70. 4.2.1.61 enzyme   beta-hydroxypalmitoyl thioester dehydratase
                      3-hydroxypalmitoyl-[acyl-carrier-protein] dehydratase
                      D-3-hydroxypalmitoyl-[acyl-carrier-protein] dehydratase
                      beta-hydroxypalmityl-ACP dehydrase
                      beta-hydroxypalmitoyl-acyl carrier protein dehydrase
                      (3R)-3-hydroxypalmitoyl-[acyl-carrier-protein] hydro-lyase

71. 4.2.1.58 enzyme   3-hydroxybutyryl acyl carrier protein dehydratase
                      crotonoyl-[acyl-carrier-protein] hydratase
                      crotonyl acyl carrier protein hydratase
                      enoyl acyl carrier protein hydrase
                      beta-hydroxybutyryl acyl carrier protein dehydrase
                      beta-hydroxybutyryl acyl carrier protein (ACP) dehydrase
                      (3R)-3-hydroxybutanoyl-[acyl-carrier-protein] hydro-lyase

72. 4.2.1.60 enzyme   3-hydroxydecanoyl-[acyl-carrier-protein] dehydratase
                      3-hydroxydecanoyl-acyl carrier protein dehydratase
                      D-3-hydroxydecanoyl-[acyl-carrier protein] dehydratase
                      beta-hydroxydecanoate dehydrase
                      beta-hydroxydecanoyl thioester dehydrase
                      3-hydroxydecanoyl-acyl carrier protein dehydrase
                      (3R)-3-hydroxydecanoyl-[acyl-carrier-protein] hydro-lyase

73. 4.2.1.93 enzyme   ATP-dependent H4NAD(P)OH dehydratase
                      reduced nicotinamide adenine dinucleotide hydrate dehydratase
                      ATP-dependent NAD(P)H-hydrate dehydratase
                      (6S)-beta-6-hydroxy-1,4,5,6-tetrahydronicotinamide-adenine- dinucleotide hydro-lyase(ATP-hydrolysing)