, hydroxymethylbilane synthase : glucosaminate ammonia-lyase : serine-sulfate ammonia-lyase EC 4.3.1.11: Deleted: inadequately characterized : ornithine cyclodeaminase : carbamoyl-serine ammonia-lyase : 3-aminobutyryl-CoA ammonia-lyase : diaminopropionate ammonia-lyase : threo-3-hydroxy-L-aspartate ammonia-lyase : L-serine ammonia-lyase : D-serine ammonia-lyase : threonine ammonia-lyase : erythro-3-hydroxy-L-aspartate ammonia-lyase EC 4.3.1.21: identical to , glucosaminate ammonia-lyase : 3,4-dihydroxyphenylalanine reductive deaminase : tyrosine ammonia-lyase : phenylalanine ammonia-lyase : phenylalanine/tyrosine ammonia-lyase EC 4.3.1.26: Now , dichlorochromopyrrolate synthase : threo-3-hydroxy-D-aspartate ammonia-lyase : L-lysine cyclodeaminase : D-glucosaminate-6-phosphate ammonia-lyase * : dTDP-4-amino-4,6-dideoxy-D-glucose ammonia-lyase * : L-tryptophan ammonia lyase * : 7,8-didemethyl-8-hydroxy-5-deazariboflavin synthase * *No Wikipedia article EC 4.3.2: Amidine-Lyases : argininosuccinate lyase : adenylosuccinate lyase : ureidoglycolate lyase : purine imidazole-ring cyclase : peptidylamidoglycolate lyase : γ-L-glutamyl-butirosin B γ-glutamyl cyclotransferase : glutathione-specific γ-glutamylcyclotransferase * : γ-glutamylamine cyclotransferase * : γ-glutamylcyclotransferase * : imidazole glycerol-phosphate synthase * *No Wikipedia article EC 4.3.3: Amine-Lyases : 3-ketovalidoxylamine C-N-lyase : strictosidine synthase : deacetylisoipecoside synthase : deacetylipecoside synthase : 4′-demethylrebeccamycin synthase : pyridoxal 5′-phosphate synthase (glutamine hydrolysing) : 4-hydroxy-tetrahydrodipicolinate synthase EC 4.3.99: Other Carbon-Nitrogen Lyases EC 4.3.99.1: Now , cyanate hydratase EC 4.3.99.2: Now , carboxybiotin decarboxylase : 7-carboxy-7-deazaguanine synthase : choline trimethylamine-lyase * *No Wikipedia article EC 4.4: Carbon-Sulfur Lyases EC 4.4.1: Carbon-sulfur lyases (only sub-subclass identified to date) : cystathionine γ-lyase : homocysteine desulfhydrase : dimethylpropiothetin dethiomethylase : alliin lyase : lactoylglutathione lyase EC 4.4.1.6: Now included in , cysteine-S-conjugate β-lyase EC 4.4.1.7: Now included with glutathione transferase EC 4.4.1.8: Now included in , cysteine-S-conjugate β-lyase : L-3-cyanoalanine synthase : cysteine lyase : methionine γ-lyase EC 4.4.1.12: deleted: activity due to , sulfoacetaldehyde acetyltransferase : cysteine-S-conjugate β-lyase : 1-aminocyclopropane-1-carboxylate synthase : D-cysteine desulfhydrase : selenocysteine lyase : holocytochrome-c synthase EC 4.4.1.18: Now , prenylcysteine oxidase : phosphosulfolactate synthase : leukotriene-C4 synthase : S-ribosylhomocysteine lyase : S-(hydroxymethyl)glutathione synthase : 2-hydroxypropyl-CoM lyase : (2R)-sulfolactate sulfo-lyase : L-cysteate sulfo-lyase : olivetolic acid cyclase EC 4.4.1.27: Now , carbon disulfide hydrolase *No Wikipedia article EC 4.5: Carbon-Halide Lyases EC 4.5.1: Carbon-halide lyases (only sub-subclass identified to date) : DDT-dehydrochlorinase : 3-chloro-D-alanine dehydrochlorinase : dichloromethane dehalogenase : L-2-amino-4-chloropent-4-enoate dehydrochlorinase : S-carboxymethylcysteine synthase EC 4.6: Phosphorus-Oxygen Lyases EC 4.6.1: Phosphorus-oxygen lyases (only sub-subclass identified to date) : adenylate cyclase : guanylate cyclase EC 4.6.1.3: Now , 3-dehydroquinate synthase EC 4.6.1.4: Now , chorismate synthase EC 4.6.1.5: Now , pentalenene synthase : cytidylate cyclase EC 4.6.1.7: Now , casbene synthase EC 4.6.1.8: Now , (-)-endo-fenchol synthase EC 4.6.1.9: Now Now , sabinene-hydrate