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.
questin reductase (EC 1.1.1.443)
questin reductase. EC 1.1.1.443.. questin hydroquinone + NADP(+) = questin + NADPH + 2 H(+).
quinaldate 4-oxidoreductase (EC 1.3.99.18)
quinaldate 4-oxidoreductase. EC 1.3.99.18.. quinaldate + A + H2O = kynurenate + AH2.
quinate O-hydroxycinnamoyltransferase (EC 2.3.1.99)
quinate O-hydroxycinnamoyltransferase. EC 2.3.1.99.. L-quinate + (E)-feruloyl-CoA = 4-O-feruloyl-D-quinate + CoA.
quinate/shikimate dehydrogenase (NAD(+)) (EC 1.1.1.24)
quinate/shikimate dehydrogenase (NAD(+)). EC 1.1.1.24.. L-quinate + NAD(+) = 3-dehydroquinate + NADH + H(+).
quinate/shikimate dehydrogenase (quinone) (EC 1.1.5.8)
quinate/shikimate dehydrogenase (quinone). EC 1.1.5.8.. L-quinate + a quinone = 3-dehydroquinate + a quinol.
quinate/shikimate dehydrogenase [NAD(P)(+)] (EC 1.1.1.282)
quinate/shikimate dehydrogenase [NAD(P)(+)]. EC 1.1.1.282.. (1) L-quinate + NADP(+) = 3-dehydroquinate + NADPH + H(+).
quinine 3-monooxygenase (EC 1.14.14.55)
quinine 3-monooxygenase. EC 1.14.14.55.. quinine + reduced [NADPH--hemoprotein reductase] + O2 = 3-hydroxyquinine
quinol--cytochrome-c reductase (EC 7.1.1.8)
quinol--cytochrome-c reductase. EC 7.1.1.8.. a quinol + 2 Fe(III)-[cytochrome c](out) = a quinone + 2 Fe(II)-
quinolinate synthase (EC 2.5.1.72)
quinolinate synthase. EC 2.5.1.72.. iminosuccinate + dihydroxyacetone phosphate = quinolinate + phosphate +
quinoline 2-oxidoreductase (EC 1.3.99.17)
quinoline 2-oxidoreductase. EC 1.3.99.17.. quinoline + A + H2O = quinolin-2(1H)-one + AH2.
quinoline-4-carboxylate 2-oxidoreductase (EC 1.3.99.19)
quinoline-4-carboxylate 2-oxidoreductase. EC 1.3.99.19.. quinoline-4-carboxylate + A + H2O = 2-oxo-1,2-dihydroquinoline-4-
quinoprotein glucose dehydrogenase (PQQ, quinone) (EC 1.1.5.2)
quinoprotein glucose dehydrogenase (PQQ, quinone). EC 1.1.5.2.. a ubiquinone + D-glucose = D-glucono-1,5-lactone + a ubiquinol.
quinoprotein inositol dehydrogenase (EC 1.1.5.n1)
quinoprotein inositol dehydrogenase. EC 1.1.5.n1.. pyrroloquinoline quinone + myo-inositol = pyrroloquinoline quinol +
quorum-quenching N-acyl-homoserine lactonase (EC 3.1.1.81)
quorum-quenching N-acyl-homoserine lactonase. EC 3.1.1.81.. an N-acyl-L-homoserine lactone + H2O = an N-acyl-L-homoserine + H(+).
R-linalool synthase (EC 4.2.3.26)
R-linalool synthase. EC 4.2.3.26.. (2E)-geranyl diphosphate + H2O = (R)-linalool + diphosphate.
R-phycocyanin alpha-cysteine-84 phycourobilin lyase/isomerase (EC 4.4.1.33)
R-phycocyanin alpha-cysteine-84 phycourobilin lyase/isomerase. EC 4.4.1.33.. phycourobilin-L-cysteinyl(84)-[R-phycocyanin alpha-subunit] = apo-L-
raffinose--raffinose alpha-galactosyltransferase (EC 2.4.1.166)
raffinose--raffinose alpha-galactosyltransferase. EC 2.4.1.166.. 2 raffinose = 1(F)-alpha-D-galactosylraffinose + sucrose.
raucaffricine beta-glucosidase (EC 3.2.1.125)
raucaffricine beta-glucosidase. EC 3.2.1.125.. raucaffricine + H2O = vomilenine + D-glucose.
RBR-type E3 ubiquitin transferase (EC 2.3.2.31)
RBR-type E3 ubiquitin transferase. EC 2.3.2.31.. [E2 ubiquitin-conjugating enzyme]-S-ubiquitinyl-L-cysteine + [acceptor
RCR-type E3 ubiquitin transferase (EC 2.3.2.33)
RCR-type E3 ubiquitin transferase. EC 2.3.2.33.. [E2 ubiquitin-conjugating enzyme]-S-ubiquitinyl-L-cysteine + [acceptor
receptor protein serine/threonine kinase (EC 2.7.11.30)
receptor protein serine/threonine kinase. EC 2.7.11.30.. (1) L-seryl-[receptor-protein] + ATP = O-phospho-L-seryl-[receptor-
receptor protein-tyrosine kinase (EC 2.7.10.1)
receptor protein-tyrosine kinase. EC 2.7.10.1.. L-tyrosyl-[protein] + ATP = O-phospho-L-tyrosyl-[protein] + ADP + H(+).
red chlorophyll catabolite reductase (EC 1.3.7.12)
red chlorophyll catabolite reductase. EC 1.3.7.12.. primary fluorescent chlorophyll catabolite + 2 oxidized [2Fe-2S]-
renalase (EC 1.6.3.5)
renalase. EC 1.6.3.5.. (1) 1,2-dihydro-beta-NAD + O2 + H(+) = H2O2 + NAD(+).
Renilla-luciferin sulfotransferase (EC 2.8.2.10)
Renilla-luciferin sulfotransferase. EC 2.8.2.10.. coelenterazine h + 3'-phosphoadenylyl sulfate = luciferyl sulfate +
Renilla-type luciferase (EC 1.13.12.5)
Renilla-type luciferase. EC 1.13.12.5.. coelenterazine h + O2 = excited coelenteramide h monoanion + hnu + CO2 +
renin (EC 3.4.23.15)
renin. EC 3.4.23.15.. Cleavage of Leu-|-Xaa bond in angiotensinogen to generate angiotensin I.
repressor LexA (EC 3.4.21.88)
repressor LexA. EC 3.4.21.88.. Hydrolysis of Ala-|-Gly bond in repressor LexA.
resorcinol 4-hydroxylase (FADH2) (EC 1.14.14.27)
resorcinol 4-hydroxylase (FADH2). EC 1.14.14.27.. resorcinol + FADH2 + O2 = benzene-1,2,4-triol + FAD + H2O + H(+).
resorcinol 4-hydroxylase (NADH) (EC 1.14.13.220)
resorcinol 4-hydroxylase (NADH). EC 1.14.13.220.. resorcinol + NADH + O2 + H(+) = benzene-1,2,4-triol + NAD(+) + H2O.
resorcinol 4-hydroxylase (NADPH) (EC 1.14.13.219)
resorcinol 4-hydroxylase (NADPH). EC 1.14.13.219.. resorcinol + NADPH + O2 + H(+) = benzene-1,2,4-triol + NADP(+) + H2O.
resorcinol O-methyltransferase (EC 2.1.1.n1)
resorcinol O-methyltransferase. EC 2.1.1.n1.. resorcinol + S-adenosyl-L-methionine = 3-methoxyphenol + S-adenosyl-L-
respiratory dimethylsulfoxide reductase (EC 1.8.5.3)
respiratory dimethylsulfoxide reductase. EC 1.8.5.3.. dimethyl sulfide + a menaquinone + H2O = dimethyl sulfoxide +
resveratrol 4'-O-methyltransferase (EC 2.1.1.399)
resveratrol 4'-O-methyltransferase. EC 2.1.1.399.. trans-resveratrol + S-adenosyl-L-methionine = 4'-O-methyl-trans-
reticuline N-methyltransferase (EC 2.1.1.337)
reticuline N-methyltransferase. EC 2.1.1.337.. (1) (S)-reticuline + S-adenosyl-L-methionine = (S)-tembetarine +
reticuline oxidase (EC 1.21.3.3)
reticuline oxidase. EC 1.21.3.3.. (S)-reticuline + O2 = (S)-scoulerine + H2O2 + H(+).
retinal dehydrogenase (EC 1.2.1.36)
retinal dehydrogenase. EC 1.2.1.36.. retinal + NAD(+) + H2O = retinoate + NADH + 2 H(+).
retinoid isomerohydrolase (EC 3.1.1.64)
retinoid isomerohydrolase. EC 3.1.1.64.. an all-trans-retinyl ester + H2O = 11-cis-retinol + a fatty acid + H(+).
retinol O-fatty-acyltransferase (EC 2.3.1.76)
retinol O-fatty-acyltransferase. EC 2.3.1.76.. all-trans-retinol + an acyl-CoA = an all-trans-retinyl ester + CoA.
retroviral ribonuclease H (EC 3.1.26.13)
retroviral ribonuclease H. EC 3.1.26.13.. Endohydrolysis of RNA in RNA/DNA hybrids. Three different cleavage modes:
reuteransucrase (EC 2.4.1.395)
reuteransucrase. EC 2.4.1.395.. formation of reuteran from sucrose.
rhamnogalacturonan acetylesterase (EC 3.1.1.86)
rhamnogalacturonan acetylesterase. EC 3.1.1.86.. Hydrolytic cleavage of 2-O-acetyl- or 3-O-acetyl groups of alpha-D-
rhamnogalacturonan endolyase (EC 4.2.2.23)
rhamnogalacturonan endolyase. EC 4.2.2.23.. Endotype eliminative cleavage of L-alpha-rhamnopyranosyl-(1->4)-alpha-D-
rhamnogalacturonan exolyase (EC 4.2.2.24)
rhamnogalacturonan exolyase. EC 4.2.2.24.. Exotype eliminative cleavage of alpha-L-rhamnopyranosyl-(1->4)-alpha-D-
rhamnogalacturonan galacturonohydrolase (EC 3.2.1.173)
rhamnogalacturonan galacturonohydrolase. EC 3.2.1.173.. Exohydrolysis of the alpha-D-GalA-(1->2)-alpha-L-Rha bond in
rhamnogalacturonan hydrolase (EC 3.2.1.171)
rhamnogalacturonan hydrolase. EC 3.2.1.171.. Endohydrolysis of alpha-D-GalA-(1->2)-alpha-L-Rha glycosidic bond in the
rhamnogalacturonan I galactosyltransferase (EC 2.4.1.375)
rhamnogalacturonan I galactosyltransferase. EC 2.4.1.375.. Transfer of a beta-galactosyl residue in a beta-(1->4) linkage from UDP-
rhamnogalacturonan I rhamnosyltransferase (EC 2.4.1.351)
rhamnogalacturonan I rhamnosyltransferase. EC 2.4.1.351.. alpha-D-galacturonosyl-[(1->2)-alpha-L-rhamnosyl-(1->4)-alpha-D-
rhamnogalacturonan rhamnohydrolase (EC 3.2.1.174)
rhamnogalacturonan rhamnohydrolase. EC 3.2.1.174.. Exohydrolysis of the alpha-L-Rha-(1->4)-alpha-D-GalA bond in
rhamnopyranosyl-N-acetylglucosaminyl-diphospho-decaprenol beta-1,4/1,5- (EC 2.4.1.287)
rhamnopyranosyl-N-acetylglucosaminyl-diphospho-decaprenol beta-1,4/1,5-. EC 2.4.1.287.. alpha-L-rhamnosyl-(1->3)-N-acetyl-alpha-D-glucosaminyl-diphospho-
rhamnulokinase (EC 2.7.1.5)
rhamnulokinase. EC 2.7.1.5.. L-rhamnulose + ATP = L-rhamnulose 1-phosphate + ADP + H(+).
rhamnulose-1-phosphate aldolase (EC 4.1.2.19)
rhamnulose-1-phosphate aldolase. EC 4.1.2.19.. L-rhamnulose 1-phosphate = (S)-lactaldehyde + dihydroxyacetone phosphate.
rhazimal reductase (EC 1.1.1.440)
rhazimal reductase. EC 1.1.1.440.. rhazimol + NADP(+) = rhazimal + NADPH + 2 H(+).
rhazimal synthase (EC 1.14.14.187)
rhazimal synthase. EC 1.14.14.187.. (19E)-geissoschizine + reduced [NADPH--hemoprotein reductase] + O2 =
rhizathalene A synthase (EC 4.2.3.195)
rhizathalene A synthase. EC 4.2.3.195.. (2E,6E,10E)-geranylgeranyl diphosphate = rhizathalene A + diphosphate.
Rhizobium leguminosarum exopolysaccharide glucosyl ketal-pyruvate- (EC 2.5.1.98)
Rhizobium leguminosarum exopolysaccharide glucosyl ketal-pyruvate-. EC 2.5.1.98.. [4)-beta-D-GlcA-(1->4)-2-O-Ac-beta-D-GlcA-(1->4)-beta-D-Glc-(1->4)-[3-O-
rhizopuspepsin (EC 3.4.23.21)
rhizopuspepsin. EC 3.4.23.21.. Hydrolysis of proteins with broad specificity similar to that of pepsin
rhodopsin kinase (EC 2.7.11.14)
rhodopsin kinase. EC 2.7.11.14.. (1) L-seryl-[rhodopsin] + ATP = O-phospho-L-seryl-[rhodopsin] + ADP +
rhodotorulapepsin (EC 3.4.23.26)
rhodotorulapepsin. EC 3.4.23.26.. Specificity similar to that of pepsin A. Cleaves Z-Lys-|-Ala-Ala-Ala and
rhomboid protease (EC 3.4.21.105)
rhomboid protease. EC 3.4.21.105.. Cleaves type-1 transmembrane domains using a catalytic dyad composed of