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.
inosine kinase (EC 2.7.1.73)
inosine kinase. EC 2.7.1.73.. inosine + ATP = IMP + ADP + H(+).
inosine nucleosidase (EC 3.2.2.2)
inosine nucleosidase. EC 3.2.2.2.. inosine + H2O = hypoxanthine + D-ribose.
inosine/xanthosine triphosphatase (EC 3.6.1.73)
inosine/xanthosine triphosphatase. EC 3.6.1.73.. (1) ITP + H2O = IDP + phosphate + H(+).
inositol 1-methyltransferase (EC 2.1.1.40)
inositol 1-methyltransferase. EC 2.1.1.40.. myo-inositol + S-adenosyl-L-methionine = 1D-1-O-methyl-myo-inositol +
inositol 2-dehydrogenase (EC 1.1.1.18)
inositol 2-dehydrogenase. EC 1.1.1.18.. myo-inositol + NAD(+) = scyllo-inosose + NADH + H(+).
inositol 3-alpha-galactosyltransferase (EC 2.4.1.123)
inositol 3-alpha-galactosyltransferase. EC 2.4.1.123.. myo-inositol + UDP-alpha-D-galactose = alpha-D-galactosyl-(1->3)-1D-myo-
inositol 3-kinase (EC 2.7.1.64)
inositol 3-kinase. EC 2.7.1.64.. myo-inositol + ATP = 1D-myo-inositol 3-phosphate + ADP + H(+).
inositol 3-methyltransferase (EC 2.1.1.39)
inositol 3-methyltransferase. EC 2.1.1.39.. myo-inositol + S-adenosyl-L-methionine = 1D-3-O-methyl-myo-inositol +
inositol 4-methyltransferase (EC 2.1.1.129)
inositol 4-methyltransferase. EC 2.1.1.129.. myo-inositol + S-adenosyl-L-methionine = 1D-4-O-methyl-myo-inositol +
inositol oxygenase (EC 1.13.99.1)
inositol oxygenase. EC 1.13.99.1.. myo-inositol + O2 = D-glucuronate + H2O + H(+).
inositol phosphorylceramide mannosyltransferase (EC 2.4.1.370)
inositol phosphorylceramide mannosyltransferase. EC 2.4.1.370.. a 1D-myo-inositol-1-phospho-N-[(R)-2-hydroxy-very-long-chain fatty acyl]-
inositol phosphorylceramide synthase (EC 2.7.1.227)
inositol phosphorylceramide synthase. EC 2.7.1.227.. an N-(2R-hydroxy-very-long-chain fatty acyl)-(R)-4-hydroxysphingoid base
inositol-1,3,4-trisphosphate 5/6-kinase (EC 2.7.1.159)
inositol-1,3,4-trisphosphate 5/6-kinase. EC 2.7.1.159.. (1) 1D-myo-inositol 1,3,4-trisphosphate + ATP = 1D-myo-inositol 1,3,4,5-
inositol-1,4-bisphosphate 1-phosphatase (EC 3.1.3.57)
inositol-1,4-bisphosphate 1-phosphatase. EC 3.1.3.57.. 1D-myo-inositol 1,4-bisphosphate + H2O = 1D-myo-inositol 4-phosphate +
inositol-3-phosphate synthase (EC 5.5.1.4)
inositol-3-phosphate synthase. EC 5.5.1.4.. D-glucose 6-phosphate = 1D-myo-inositol 3-phosphate.
inositol-hexakisphosphate 5-kinase (EC 2.7.4.21)
inositol-hexakisphosphate 5-kinase. EC 2.7.4.21.. (1) 1D-myo-inositol hexakisphosphate + ATP = 5-diphospho-1D-myo-inositol
inositol-pentakisphosphate 2-kinase (EC 2.7.1.158)
inositol-pentakisphosphate 2-kinase. EC 2.7.1.158.. 1D-myo-inositol 1,3,4,5,6-pentakisphosphate + ATP = 1D-myo-inositol
inositol-phosphate phosphatase (EC 3.1.3.25)
inositol-phosphate phosphatase. EC 3.1.3.25.. a myo-inositol phosphate + H2O = myo-inositol + phosphate.
inositol-polyphosphate 5-phosphatase (EC 3.1.3.56)
inositol-polyphosphate 5-phosphatase. EC 3.1.3.56.. (1) 1D-myo-inositol 1,4,5-trisphosphate + H2O = 1D-myo-inositol 1,4-
inositol-polyphosphate multikinase (EC 2.7.1.151)
inositol-polyphosphate multikinase. EC 2.7.1.151.. 1D-myo-inositol 1,4,5-trisphosphate + 2 ATP = 1D-myo-inositol 1,3,4,5,6-
inositol-tetrakisphosphate 1-kinase (EC 2.7.1.134)
inositol-tetrakisphosphate 1-kinase. EC 2.7.1.134.. 1D-myo-inositol 3,4,5,6-tetrakisphosphate + ATP = 1D-myo-inositol
inositol-tetrakisphosphate 5-kinase (EC 2.7.1.140)
inositol-tetrakisphosphate 5-kinase. EC 2.7.1.140.. 1D-myo-inositol 1,3,4,6-tetrakisphosphate + ATP = 1D-myo-inositol
inositol-trisphosphate 3-kinase (EC 2.7.1.127)
inositol-trisphosphate 3-kinase. EC 2.7.1.127.. 1D-myo-inositol 1,4,5-trisphosphate + ATP = 1D-myo-inositol 1,3,4,5-
insulysin (EC 3.4.24.56)
insulysin. EC 3.4.24.56.. Degradation of insulin, glucagon and other polypeptides. No action on
intermediate cleaving peptidase 55 (EC 3.4.11.26)
intermediate cleaving peptidase 55. EC 3.4.11.26.. The enzyme cleaves the 36-Pro-Pro-37 bond of cysteine desulfurase
interstitial collagenase (EC 3.4.24.7)
interstitial collagenase. EC 3.4.24.7.. Cleavage of the triple helix of collagen at about three-quarters of the
intramembrane prenyl-peptidase Rce1 (EC 3.4.26.1)
intramembrane prenyl-peptidase Rce1. EC 3.4.26.1.. Hydrolyzes the peptide bond -P2-(S-farnesyl or
intrinsic cysteine-dependent pyridinium-3,5-bisthiocarboxylic acid (EC 4.4.1.37)
intrinsic cysteine-dependent pyridinium-3,5-bisthiocarboxylic acid. EC 4.4.1.37.. (1) pyridinium-3,5-dicarboxylate mononucleotide + [LarE protein]-L-
inulin fructotransferase (DFA-I-forming) (EC 4.2.2.17)
inulin fructotransferase (DFA-I-forming). EC 4.2.2.17.. Produces alpha-D-fructofuranose beta-D-fructofuranose
inulin fructotransferase (DFA-III-forming) (EC 4.2.2.18)
inulin fructotransferase (DFA-III-forming). EC 4.2.2.18.. Produces alpha-D-fructofuranose beta-D-fructofuranose
inulinase (EC 3.2.1.7)
inulinase. EC 3.2.1.7.. Endohydrolysis of (2->1)-beta-D-fructosidic linkages in inulin.
inulosucrase (EC 2.4.1.9)
inulosucrase. EC 2.4.1.9.. [(2->1)-beta-D-fructosyl](n) + sucrose = [(2->1)-beta-D-fructosyl](n+1) +
iodide peroxidase (EC 1.11.1.8)
iodide peroxidase. EC 1.11.1.8.. (1) 2 iodide + H2O2 + 2 H(+) = diiodine + 2 H2O.
iodophenol O-methyltransferase (EC 2.1.1.26)
iodophenol O-methyltransferase. EC 2.1.1.26.. 2-iodophenol + S-adenosyl-L-methionine = 1-iodo-2-methoxybenzene +
iodotyrosine deiodinase (EC 1.21.1.1)
iodotyrosine deiodinase. EC 1.21.1.1.. 2 iodide + L-tyrosine + 2 NADP(+) = 3,5-diiodo-L-tyrosine + 2 NADPH +
iota-carrageenase (EC 3.2.1.157)
iota-carrageenase. EC 3.2.1.157.. Endohydrolysis of 1,4-beta-D-linkages between D-galactose 4-sulfate and
ipecoside beta-D-glucosidase (EC 3.2.1.220)
ipecoside beta-D-glucosidase. EC 3.2.1.220.. (1) ipecoside + H2O = ipecoside aglycone + D-glucose.
ipsdienol dehydrogenase (EC 1.1.1.386)
ipsdienol dehydrogenase. EC 1.1.1.386.. (1) (4R)-ipsdienol + NADP(+) = ipsdienone + NADPH + H(+).
ipsdienol synthase (EC 1.14.14.31)
ipsdienol synthase. EC 1.14.14.31.. beta-myrcene + reduced [NADPH--hemoprotein reductase] + O2 = (4R)-
iron--cytochrome-c reductase (EC 1.16.2.1)
iron--cytochrome-c reductase. EC 1.16.2.1.. Fe(3+) + Fe(II)-[cytochrome c] = Fe(2+) + Fe(III)-[cytochrome c].
iron:rusticyanin reductase (EC 1.16.9.1)
iron:rusticyanin reductase. EC 1.16.9.1.. Fe(II) + rusticyanin = Fe(III) + reduced rusticyanin.
iron(III) enterobactin esterase (EC 3.1.1.108)
iron(III) enterobactin esterase. EC 3.1.1.108.. Fe(III)-enterobactin + 3 H2O + H(+) = Fe(III)-[N-(2,3-dihydroxybenzoyl)-
iron(III) salmochelin esterase (EC 3.1.1.109)
iron(III) salmochelin esterase. EC 3.1.1.109.. (1) Fe(III)-di(C-5-deoxy-beta-D-glucosyl)-enterobactin + H2O = Fe(III)-
isatin hydrolase (EC 3.5.2.20)
isatin hydrolase. EC 3.5.2.20.. isatin + H2O = isatinate + H(+).
isethionate sulfite-lyase (EC 4.4.1.38)
isethionate sulfite-lyase. EC 4.4.1.38.. 2-hydroxyethane-1-sulfonate = acetaldehyde + sulfite + H(+).
ISG15--protein ligase (EC 6.3.2.n3)
ISG15--protein ligase. EC 6.3.2.n3.. ATP + [ISG15] + [protein]-lysine = AMP + diphosphate + [protein]-N-
isoamyl acetate esterase (EC 3.1.1.112)
isoamyl acetate esterase. EC 3.1.1.112.. 3-methylbutyl acetate + H2O = 3-methylbutan-1-ol + acetate + H(+).
isoamylase (EC 3.2.1.68)
isoamylase. EC 3.2.1.68.. Hydrolysis of (1->6)-alpha-D-glucosidic branch linkages in glycogen,
isobutylamine N-monooxygenase (EC 1.14.14.30)
isobutylamine N-monooxygenase. EC 1.14.14.30.. (1) 2-methylpropan-1-amine + FADH2 + O2 = N-(2-methylpropyl)hydroxylamine
isobutyraldoxime O-methyltransferase (EC 2.1.1.91)
isobutyraldoxime O-methyltransferase. EC 2.1.1.91.. 2-methylpropanal oxime + S-adenosyl-L-methionine = 2-methylpropanal
isobutyryl-CoA mutase (EC 5.4.99.13)
isobutyryl-CoA mutase. EC 5.4.99.13.. 2-methylpropanoyl-CoA = butanoyl-CoA.
isochorismatase (EC 3.3.2.1)
isochorismatase. EC 3.3.2.1.. isochorismate + H2O = (2S,3S)-2,3-dihydroxy-2,3-dihydrobenzoate +
isochorismate lyase (EC 4.2.99.21)
isochorismate lyase. EC 4.2.99.21.. isochorismate = salicylate + pyruvate.
isochorismate synthase (EC 5.4.4.2)
isochorismate synthase. EC 5.4.4.2.. chorismate = isochorismate.
isocitrate dehydrogenase (NAD(+)) (EC 1.1.1.41)
isocitrate dehydrogenase (NAD(+)). EC 1.1.1.41.. D-threo-isocitrate + NAD(+) = 2-oxoglutarate + CO2 + NADH.
isocitrate dehydrogenase (NADP(+)) (EC 1.1.1.42)
isocitrate dehydrogenase (NADP(+)). EC 1.1.1.42.. D-threo-isocitrate + NADP(+) = 2-oxoglutarate + CO2 + NADPH.
isocitrate epimerase (EC 5.1.2.6)
isocitrate epimerase. EC 5.1.2.6.. D-threo-isocitrate = D-erythro-isocitrate.
isocitrate lyase (EC 4.1.3.1)
isocitrate lyase. EC 4.1.3.1.. D-threo-isocitrate = glyoxylate + succinate.
isocitrate O-dihydroxycinnamoyltransferase (EC 2.3.1.126)
isocitrate O-dihydroxycinnamoyltransferase. EC 2.3.1.126.. D-threo-isocitrate + (E)-caffeoyl-CoA = 2-[(E)-caffeoyl]-D-threo-
isocitrate--homoisocitrate dehydrogenase (EC 1.1.1.286)
isocitrate--homoisocitrate dehydrogenase. EC 1.1.1.286.. (1) D-threo-isocitrate + NAD(+) = 2-oxoglutarate + CO2 + NADH.