FB2026_02 , released June 18, 2026
FB2026_02 , released June 18, 2026
CV Term Report
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General Information
Term hydro-lyase activity ID (Ontology) GO:0016836 (Gene Ontology)
Definition Catalysis of the cleavage of a carbon-oxygen bond by elimination of water.[ EC:4 ]
Comment
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Annotations
Records annotated with this term OR any of its CHILD TERMS
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Data Class Field Records
Genes (FBgn)  GO_MOLECULAR_FUNCTION       2
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
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 Gene Groups Genes
 hydro-lyase activity (all annotations which use CV term, excluding "NOT" statements)       2      2
     enables | hydro-lyase activity       --       2
Spanning Tree (Parents/Children)
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  lyase activity
   |__carbon-oxygen lyase activity
       |__hydro-lyase activity  50 rec.
           |__(3R)-hydroxyacyl-[acyl-carrier-protein] dehydratase activity 1 rec.
           |__(R)-2-methylmalate dehydratase activity
           |__(S)-2-methylmalate dehydratase activity
           |__1,5-anhydro-D-fructose dehydratase activity
           |__2-(omega-methylthio)alkylmalate dehydratase activity
           |__2-dehydro-3-deoxy-L-arabinonate dehydratase activity
           |__2-hydroxyglutaryl-CoA dehydratase activity
           |__2-hydroxyhexa-2,4-dienoate hydratase activity
           |__2-hydroxyisoflavanone dehydratase activity
           |__2-keto-3-deoxygalactonate aldolase activity
           |__2-methylcitrate dehydratase activity
           |__2-methylisocitrate dehydratase activity
           |__2-oxo-hept-3-ene-1,7-dioate hydratase activity
           |__2-oxopent-4-enoate hydratase activity
           |__3-cyanoalanine hydratase activity
           |__3-dehydroquinate dehydratase activity
           |__3-dehydroshikimate dehydratase activity
           |__3-isopropylmalate dehydratase activity
           |__3alpha,7alpha,12alpha-trihydroxy-5beta-cholest-24-enoyl-CoA hydratase activity
           |__4-alpha-hydroxytetrahydrobiopterin dehydratase activity 1 rec.
           |__4-hydroxybutanoyl-CoA dehydratase activity
           |__4-oxalmesaconate hydratase activity
           |__5-alpha-hydroxysteroid dehydratase activity
           |__5-dehydro-4-deoxyglucarate dehydratase activity
           |__14betaH-scalarane-17alpha-19-diol synthase activity
           |__16-alpha-hydroxyprogesterone dehydratase activity
           |__17(E)-cheilanthenediol synthase activity
           |__acetylene hydratase activity
           |__acetylenecarboxylate hydratase activity
           |__aconitate hydratase activity 5 rec.
           |__ADP-dependent NAD(P)H-hydrate dehydratase activity
           |__aldos-2-ulose dehydratase activity
           |__allene oxide synthase activity
           |__altronate dehydratase activity
           |__arabinonate dehydratase activity
           |__arogenate dehydratase activity
           |__ATP-dependent NAD(P)H-hydrate dehydratase activity 1 rec.
           |__bile-acid 7alpha-dehydratase activity
           |__carbonate dehydratase activity 17 rec.
           |__CDP-glucose 4,6-dehydratase activity
           |__colneleate synthase activity
           |__copal-8-ol diphosphate synthase activity
           |__cyanamide hydratase activity
           |__cyanate hydratase activity
           |__cyanide hydratase activity
           |__cyclohexa-1,5-dienecarbonyl-CoA hydratase activity
           |__cyclohexyl-isocyanide hydratase activity
           |__cystathionine beta-synthase activity 1 rec.
           |__D(-)-tartrate dehydratase activity
           |__D-fuconate dehydratase activity
           |__D-glutamate cyclase activity
           |__dihydroxy-acid dehydratase activity
           |__dimethylmaleate hydratase activity
           |__dTDP-glucose 4,6-dehydratase activity
           |__ectoine synthase activity
           |__enoyl-CoA hydratase activity 10 rec.
           |   |__3-hydroxyacyl-CoA dehydratase activity(+) 4 rec.
           |   |__3-hydroxypropionyl-CoA dehydratase activity 1 rec.
           |__fumarate hydratase activity 5 rec.
           |__galactarate dehydratase activity
           |__galactonate dehydratase activity
           |__GDP-mannose 4,6-dehydratase activity 1 rec.
           |__glucarate dehydratase activity
           |__gluconate dehydratase activity
           |__glycerol dehydratase activity
           |__glyoxalase (glycolic acid-forming) activity
           |__glyoxalase III activity
           |__homoaconitate hydratase activity
           |__hydroperoxy icosatetraenoate dehydratase activity
           |__imidazoleglycerol-phosphate dehydratase activity
           |__isohexenylglutaconyl-CoA hydratase activity
           |__itaconyl-CoA hydratase activity
           |__kievitone hydratase activity
           |__L(+)-tartrate dehydratase activity
           |__L-altrarate dehydratase activity
           |__L-arabinonate dehydratase activity
           |__L-fuconate dehydratase activity
           |__L-lyxonate dehydratase activity
           |__L-rhamnonate dehydratase activity
           |__L-serine hydro-lyase (adding indole, L-tryptophan-forming) activity
           |__lactoyl-CoA dehydratase activity
           |__lupan-3beta,20-diol synthase activity
           |__maleate hydratase activity
           |__mannonate dehydratase activity
           |__mesaconyl-CoA hydratase activity
           |__methylglutaconyl-CoA hydratase activity 1 rec.
           |__methylthioribulose 1-phosphate dehydratase activity 1 rec.
           |__myo-inosose-2 dehydratase activity
           |__nitrile hydratase activity
           |   |__indole-3-acetonitrile nitrile hydratase activity
           |__O-succinylbenzoate synthase activity
           |__octopamine dehydratase activity
           |__oleate hydratase activity
           |__peregrinol diphosphate synthase activity
           |__phaseollidin hydratase activity
           |__phosphogluconate dehydratase activity
           |__phosphopyruvate hydratase activity 1 rec.
           |__porphobilinogen synthase activity 1 rec.
           |__prephenate dehydratase activity
           |__propanediol dehydratase activity
           |__protoaphin-aglucone dehydratase (cyclizing) activity
           |__pseudouridylate synthase activity 1 rec.
           |__pterin-4alpha-carbinolamine dehydratase activity
           |__pterocarpan synthase activity
           |__pyrazolylalanine synthase activity
           |__retinol dehydratase activity
           |__scytalone dehydratase activity
           |__selenocystathionine beta-synthase activity
           |__synephrine dehydratase activity
           |__trans-L-3-hydroxyproline dehydratase activity
           |__tRNA threonylcarbamoyladenosine dehydratase activity
           |__tryptophan synthase activity
           |__UDP-glucose 4,6-dehydratase activity
           |__urocanate hydratase activity
           |__uroporphyrinogen-III synthase activity 2 rec.
           |__versicolorin B synthase activity
           |__xylonate dehydratase activity
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Is a carbon-oxygen lyase activity
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EC:4.2.1.-
Reactome:R-HSA-2161659 "PGE2 is dehydrated to PGA2"