Enzymes A-Z
Complete database of 6965 enzymes with EC numbers, catalytic activities, alternative names, and UniProt cross-references. Browse by EC class or search for specific enzymes.
Enzymes A-Z
Complete database of 6965 enzymes with EC numbers, catalytic activities, alternative names, and UniProt cross-references. Browse by EC class or search for specific enzymes.
nucleoside-diphosphate kinase (EC 2.7.4.6)
nucleoside-diphosphate kinase. EC 2.7.4.6.. (1) a ribonucleoside 5'-diphosphate + ATP = a ribonucleoside
nucleoside-phosphate kinase (EC 2.7.4.4)
nucleoside-phosphate kinase. EC 2.7.4.4.. a ribonucleoside 5'-phosphate + ATP = a ribonucleoside 5'-diphosphate +
nucleoside-triphosphate phosphatase (EC 3.6.1.15)
nucleoside-triphosphate phosphatase. EC 3.6.1.15.. a ribonucleoside 5'-triphosphate + H2O = a ribonucleoside 5'-diphosphate
nucleoside-triphosphate--adenylate kinase (EC 2.7.4.10)
nucleoside-triphosphate--adenylate kinase. EC 2.7.4.10.. a ribonucleoside 5'-triphosphate + AMP = a ribonucleoside 5'-diphosphate
nucleoside-triphosphate-aldose-1-phosphate nucleotidyltransferase (EC 2.7.7.28)
nucleoside-triphosphate-aldose-1-phosphate nucleotidyltransferase. EC 2.7.7.28.. nucleoside triphosphate + alpha-D-aldose 1-phosphate = diphosphate + NDP-
nucleotide diphosphatase (EC 3.6.1.9)
nucleotide diphosphatase. EC 3.6.1.9.. (1) a ribonucleoside 5'-triphosphate + H2O = a ribonucleoside
nucleotide diphosphokinase (EC 2.7.6.4)
nucleotide diphosphokinase. EC 2.7.6.4.. a nucleoside 5'-phosphate + ATP = a 5'-phosphonucleoside 3'-diphosphate +
O-acetyl-ADP-ribose deacetylase (EC 3.1.1.106)
O-acetyl-ADP-ribose deacetylase. EC 3.1.1.106.. (1) 3''-O-acetyl-ADP-D-ribose + H2O = ADP-D-ribose + acetate + H(+).
O-acetylhomoserine aminocarboxypropyltransferase (EC 2.5.1.49)
O-acetylhomoserine aminocarboxypropyltransferase. EC 2.5.1.49.. O-acetyl-L-homoserine + methanethiol = L-methionine + acetate + H(+).
o-aminophenol oxidase (EC 1.10.3.4)
o-aminophenol oxidase. EC 1.10.3.4.. 4 2-aminophenol + 3 O2 = 2 2-aminophenoxazin-3-one + 6 H2O.
O-antigen ligase (EC 2.4.99.26)
O-antigen ligase. EC 2.4.99.26.. a lipid-linked O antigen + a lipid A-core oligosaccharide =
O-antigen polymerase Wzy (EC 2.4.99.27)
O-antigen polymerase Wzy. EC 2.4.99.27.. n lipid-linked O-antigen repeat units = a lipid-linked O antigen + (n-1)
O-demethylpuromycin O-methyltransferase (EC 2.1.1.38)
O-demethylpuromycin O-methyltransferase. EC 2.1.1.38.. O-demethylpuromycin + S-adenosyl-L-methionine = puromycin + S-adenosyl-L-
o-dihydroxycoumarin 7-O-glucosyltransferase (EC 2.4.1.104)
o-dihydroxycoumarin 7-O-glucosyltransferase. EC 2.4.1.104.. 7,8-dihydroxycoumarin + UDP-alpha-D-glucose = daphnin + UDP + H(+).
O-fucosylpeptide 3-beta-N-acetylglucosaminyltransferase (EC 2.4.1.222)
O-fucosylpeptide 3-beta-N-acetylglucosaminyltransferase. EC 2.4.1.222.. (1) 3-O-(alpha-L-fucosyl)-L-seryl-[EGF-like domain protein] + UDP-N-
O-mycaminosyltylonolide 6-deoxyallosyltransferase (EC 2.4.1.317)
O-mycaminosyltylonolide 6-deoxyallosyltransferase. EC 2.4.1.317.. 5-O-beta-D-mycaminosyltylonolide + dTDP-6-deoxy-alpha-D-allose =
O-phospho-L-seryl-tRNA:Cys-tRNA synthase (EC 2.5.1.73)
O-phospho-L-seryl-tRNA:Cys-tRNA synthase. EC 2.5.1.73.. O-phospho-L-seryl-tRNA(Cys) + hydrogen sulfide + H(+) = L-cysteinyl-
O-phospho-L-seryl-tRNA(Sec):L-selenocysteinyl-tRNA synthase (EC 2.9.1.2)
O-phospho-L-seryl-tRNA(Sec):L-selenocysteinyl-tRNA synthase. EC 2.9.1.2.. O-phospho-L-seryl-tRNA(Sec) + selenophosphate + H2O = L-selenocysteinyl-
O-phosphoserine sulfhydrylase (EC 2.5.1.65)
O-phosphoserine sulfhydrylase. EC 2.5.1.65.. O-phospho-L-serine + hydrogen sulfide + H(+) = L-cysteine + phosphate.
O-phosphoserine--tRNA ligase (EC 6.1.1.27)
O-phosphoserine--tRNA ligase. EC 6.1.1.27.. tRNA(Cys) + O-phospho-L-serine + ATP = O-phospho-L-seryl-tRNA(Cys) +
O-phosphoseryl-tRNA(Sec) kinase (EC 2.7.1.164)
O-phosphoseryl-tRNA(Sec) kinase. EC 2.7.1.164.. L-seryl-tRNA(Sec) + ATP = O-phospho-L-seryl-tRNA(Sec) + ADP.
o-pyrocatechuate decarboxylase (EC 4.1.1.46)
o-pyrocatechuate decarboxylase. EC 4.1.1.46.. 2,3-dihydroxybenzoate + H(+) = catechol + CO2.
O-sialoglycoprotein endopeptidase (EC 3.4.24.57)
O-sialoglycoprotein endopeptidase. EC 3.4.24.57.. Hydrolysis of O-sialoglycoproteins. Cleaves 31-Arg-|-Asp-32 bond in
o-succinylbenzoate synthase (EC 4.2.1.113)
o-succinylbenzoate synthase. EC 4.2.1.113.. (1R,6R)-6-hydroxy-2-succinyl-cyclohexa-2,4-diene-1-carboxylate =
o-succinylbenzoate--CoA ligase (EC 6.2.1.26)
o-succinylbenzoate--CoA ligase. EC 6.2.1.26.. 2-succinylbenzoate + ATP + CoA = 2-succinylbenzoyl-CoA + AMP +
O-ureido-D-serine cyclo-ligase (EC 6.3.3.5)
O-ureido-D-serine cyclo-ligase. EC 6.3.3.5.. O-ureido-D-serine + ATP + H2O + H(+) = D-cycloserine + NH4(+) + ADP +
O-ureido-L-serine synthase (EC 2.6.99.3)
O-ureido-L-serine synthase. EC 2.6.99.3.. hydroxyurea + O-acetyl-L-serine = O-ureido-L-serine + acetate + H(+).
O-ureido-serine racemase (EC 5.1.1.19)
O-ureido-serine racemase. EC 5.1.1.19.. O-ureido-L-serine = O-ureido-D-serine.
octanol dehydrogenase (EC 1.1.1.73)
octanol dehydrogenase. EC 1.1.1.73.. octan-1-ol + NAD(+) = octanal + NADH + H(+).
octanoyl-[GcvH]:protein N-octanoyltransferase (EC 2.3.1.204)
octanoyl-[GcvH]:protein N-octanoyltransferase. EC 2.3.1.204.. N(6)-octanoyl-L-lysyl-[glycine-cleavage complex H protein] + L-lysyl-
octopamine dehydratase (EC 4.2.1.87)
octopamine dehydratase. EC 4.2.1.87.. (R)-octopamine = (4-hydroxyphenyl)acetaldehyde + NH4(+).
oleanolate 3-O-glucosyltransferase (EC 2.4.1.368)
oleanolate 3-O-glucosyltransferase. EC 2.4.1.368.. oleanolate + UDP-alpha-D-glucose = oleanolate 3-O-beta-D-glucoside +
oleate 10S-lipoxygenase (EC 1.13.11.77)
oleate 10S-lipoxygenase. EC 1.13.11.77.. (1) (9Z)-octadecenoate + O2 = (8E,10S)-10-hydroperoxy-octadeca-8-enoate.
oleate hydratase (EC 4.2.1.53)
oleate hydratase. EC 4.2.1.53.. (R)-10-hydroxyoctadecanoate = (9Z)-octadecenoate + H2O.
olefin beta-lactone synthetase (EC 6.1.3.1)
olefin beta-lactone synthetase. EC 6.1.3.1.. a (2R,3S)-2-alkyl-3-hydroxyalkanoate + ATP = a cis-3-alkyl-4-alkyloxetan-
oleoyl-[acyl-carrier-protein] hydrolase (EC 3.1.2.14)
oleoyl-[acyl-carrier-protein] hydrolase. EC 3.1.2.14.. (9Z)-octadecenoyl-[ACP] + H2O = (9Z)-octadecenoate + holo-[ACP] + H(+).
oleuropein beta-glucosidase (EC 3.2.1.206)
oleuropein beta-glucosidase. EC 3.2.1.206.. oleuropein + H2O = oleuropein aglycone + D-glucose.
oligo-1,6-glucosidase (EC 3.2.1.10)
oligo-1,6-glucosidase. EC 3.2.1.10.. (1) Hydrolysis of (1->6)-alpha-D-glucosidic linkages in some
oligo-alginate lyase (EC 4.2.2.26)
oligo-alginate lyase. EC 4.2.2.26.. Cleavage of 4-deoxy-alpha-L-erythro-hex-4-enopyranuronoside
oligogalacturonide lyase (EC 4.2.2.6)
oligogalacturonide lyase. EC 4.2.2.6.. 4-(4-deoxy-alpha-D-galact-4-enuronosyl)-D-galacturonate = 2 5-dehydro-4-
oligonucleotidase (EC 3.1.13.3)
oligonucleotidase. EC 3.1.13.3.. Exonucleolytic cleavage of oligonucleotides to yield nucleoside
oligopeptidase A (EC 3.4.24.70)
oligopeptidase A. EC 3.4.24.70.. Hydrolysis of oligopeptides, with broad specificity. Gly or Ala commonly
oligopeptidase B (EC 3.4.21.83)
oligopeptidase B. EC 3.4.21.83.. Hydrolysis of -Arg-|-Xaa- and -Lys-|-Xaa- bonds in oligopeptides, even
oligosaccharide 4-alpha-D-glucosyltransferase (EC 2.4.1.161)
oligosaccharide 4-alpha-D-glucosyltransferase. EC 2.4.1.161.. Transfers the non-reducing terminal alpha-D-glucose residue from a
oligosaccharide reducing-end xylanase (EC 3.2.1.156)
oligosaccharide reducing-end xylanase. EC 3.2.1.156.. Hydrolysis of (1->4)-beta-D-xylose residues from the reducing end of
oligosaccharide-diphosphodolichol diphosphatase (EC 3.6.1.44)
oligosaccharide-diphosphodolichol diphosphatase. EC 3.6.1.44.. a di-trans,poly-cis-dolichyl diphosphooligosaccharide + H2O =
oligoxyloglucan beta-glycosidase (EC 3.2.1.120)
oligoxyloglucan beta-glycosidase. EC 3.2.1.120.. Hydrolysis of (1->4)-beta-D-glucosidic links in oligoxyloglucans so as to
oligoxyloglucan reducing-end-specific cellobiohydrolase (EC 3.2.1.150)
oligoxyloglucan reducing-end-specific cellobiohydrolase. EC 3.2.1.150.. Hydrolysis of cellobiose from the reducing end of xyloglucans consisting
olivetolic acid cyclase (EC 4.4.1.26)
olivetolic acid cyclase. EC 4.4.1.26.. 3,5,7-trioxododecanoyl-CoA = olivetolate + CoA + H(+).
omega-amidase (EC 3.5.1.3)
omega-amidase. EC 3.5.1.3.. a monoamide of a dicarboxylate + H2O = a dicarboxylate + NH4(+).
omega-hydroxy-beta-dihydromenaquinone-9 sulfotransferase (EC 2.8.2.40)
omega-hydroxy-beta-dihydromenaquinone-9 sulfotransferase. EC 2.8.2.40.. omega-hydroxy-beta-dihydromenaquinone-9 + 3'-phosphoadenylyl sulfate =
omega-hydroxyceramide transacylase (EC 2.3.1.296)
omega-hydroxyceramide transacylase. EC 2.3.1.296.. an N-(omega-hydroxy-ultra-long chain fatty acyl)-sphingoid base +
omega-hydroxydecanoate dehydrogenase (EC 1.1.1.66)
omega-hydroxydecanoate dehydrogenase. EC 1.1.1.66.. 10-hydroxydecanoate + NAD(+) = 10-oxodecanoate + NADH + H(+).
omega-hydroxypalmitate O-feruloyl transferase (EC 2.3.1.188)
omega-hydroxypalmitate O-feruloyl transferase. EC 2.3.1.188.. 16-hydroxyhexadecanoate + (E)-feruloyl-CoA =
omptin (EC 3.4.23.49)
omptin. EC 3.4.23.49.. Has a virtual requirement for Arg in the P1 position and a slightly less
opheline kinase (EC 2.7.3.7)
opheline kinase. EC 2.7.3.7.. guanidinoethyl methyl phosphate + ATP =
ophiobolin F synthase (EC 4.2.3.145)
ophiobolin F synthase. EC 4.2.3.145.. (2E,6E,10E,14E)-geranylfarnesyl diphosphate + H2O = ophiobolin F +
ophiolysin (EC 3.4.24.51)
ophiolysin. EC 3.4.24.51.. Cleavage of 3-Asn-|-Gln-4, 4-Gln-|-His-5, 10-His-|-Leu-11, 14-Ala-|-Leu-
opine dehydrogenase (EC 1.5.1.28)
opine dehydrogenase. EC 1.5.1.28.. (2S)-2-[(R)-1-carboxyethylamino]pentanoate + NAD(+) + H2O = L-2-
Oplophorus-luciferin 2-monooxygenase (EC 1.13.12.13)
Oplophorus-luciferin 2-monooxygenase. EC 1.13.12.13.. coelenterazine + O2 = coelenteramide + hnu + CO2.