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.
phosphoribosyl 1,2-cyclic phosphate 1,2-diphosphodiesterase (EC 3.1.4.57)
phosphoribosyl 1,2-cyclic phosphate 1,2-diphosphodiesterase. EC 3.1.4.57.. (1) alpha-D-ribose 1,2-cyclic phosphate 5-phosphate + H2O = D-ribose 2,5-
phosphoribosyl 1,2-cyclic phosphate phosphodiesterase (EC 3.1.4.55)
phosphoribosyl 1,2-cyclic phosphate phosphodiesterase. EC 3.1.4.55.. alpha-D-ribose 1,2-cyclic phosphate 5-phosphate + H2O = alpha-D-ribose
phosphoribosyl-AMP cyclohydrolase (EC 3.5.4.19)
phosphoribosyl-AMP cyclohydrolase. EC 3.5.4.19.. 1-(5-phospho-beta-D-ribosyl)-5'-AMP + H2O = 1-(5-phospho-beta-D-ribosyl)-
phosphoribosyl-ATP diphosphatase (EC 3.6.1.31)
phosphoribosyl-ATP diphosphatase. EC 3.6.1.31.. 1-(5-phospho-beta-D-ribosyl)-ATP + H2O = 1-(5-phospho-beta-D-ribosyl)-
phosphoribosylamine--glycine ligase (EC 6.3.4.13)
phosphoribosylamine--glycine ligase. EC 6.3.4.13.. 5-phospho-beta-D-ribosylamine + glycine + ATP = N(1)-(5-phospho-beta-D-
phosphoribosylaminoimidazole carboxylase (EC 4.1.1.21)
phosphoribosylaminoimidazole carboxylase. EC 4.1.1.21.. 5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate + H(+) = 5-amino-
phosphoribosylaminoimidazolecarboxamide formyltransferase (EC 2.1.2.3)
phosphoribosylaminoimidazolecarboxamide formyltransferase. EC 2.1.2.3.. (6R)-10-formyltetrahydrofolate + 5-amino-1-(5-phospho-beta-D-
phosphoribosylaminoimidazolesuccinocarboxamide synthase (EC 6.3.2.6)
phosphoribosylaminoimidazolesuccinocarboxamide synthase. EC 6.3.2.6.. 5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate + L-aspartate +
phosphoribosylanthranilate isomerase (EC 5.3.1.24)
phosphoribosylanthranilate isomerase. EC 5.3.1.24.. N-(5-phospho-beta-D-ribosyl)anthranilate = 1-(2-carboxyphenylamino)-1-
phosphoribosylformylglycinamidine cyclo-ligase (EC 6.3.3.1)
phosphoribosylformylglycinamidine cyclo-ligase. EC 6.3.3.1.. 2-formamido-N(1)-(5-O-phospho-beta-D-ribosyl)acetamidine + ATP = 5-amino-
phosphoribosylformylglycinamidine synthase (EC 6.3.5.3)
phosphoribosylformylglycinamidine synthase. EC 6.3.5.3.. N(2)-formyl-N(1)-(5-phospho-beta-D-ribosyl)glycinamide + L-glutamine +
phosphoribosylglycinamide formyltransferase 1 (EC 2.1.2.2)
phosphoribosylglycinamide formyltransferase 1. EC 2.1.2.2.. N(1)-(5-phospho-beta-D-ribosyl)glycinamide + (6R)-10-
phosphoribosylglycinamide formyltransferase 2 (EC 6.3.1.21)
phosphoribosylglycinamide formyltransferase 2. EC 6.3.1.21.. N(1)-(5-phospho-beta-D-ribosyl)glycinamide + formate + ATP = N(2)-formyl-
phosphoribulokinase (EC 2.7.1.19)
phosphoribulokinase. EC 2.7.1.19.. D-ribulose 5-phosphate + ATP = D-ribulose 1,5-bisphosphate + ADP + H(+).
phosphorylase kinase (EC 2.7.11.19)
phosphorylase kinase. EC 2.7.11.19.. 2 ATP + phosphorylase b = 2 ADP + phosphorylase a.
phosphorylated butenolide synthase (EC 2.3.1.277)
phosphorylated butenolide synthase. EC 2.3.1.277.. a medium-chain 3-oxoacyl-[ACP] + dihydroxyacetone phosphate =
phosphoserine phosphatase (EC 3.1.3.3)
phosphoserine phosphatase. EC 3.1.3.3.. (1) O-phospho-L-serine + H2O = L-serine + phosphate.
phosphoserine transaminase (EC 2.6.1.52)
phosphoserine transaminase. EC 2.6.1.52.. (1) O-phospho-L-serine + 2-oxoglutarate = 3-phosphooxypyruvate +
phosphosulfolactate synthase (EC 4.4.1.19)
phosphosulfolactate synthase. EC 4.4.1.19.. (2R)-O-phospho-3-sulfolactate = phosphoenolpyruvate + sulfite + H(+).
photosystem I (EC 1.97.1.12)
photosystem I. EC 1.97.1.12.. reduced [plastocyanin] + hnu + oxidized [2Fe-2S]-[ferredoxin] = oxidized
photosystem II (EC 1.10.3.9)
photosystem II. EC 1.10.3.9.. 2 a plastoquinone + 4 hnu + 2 H2O = 2 a plastoquinol + O2.
phthalate 4,5-cis-dihydrodiol dehydrogenase (EC 1.3.1.64)
phthalate 4,5-cis-dihydrodiol dehydrogenase. EC 1.3.1.64.. cis-4,5-dihydroxycyclohexa-2,6-diene-1,2-dicarboxylate + NAD(+) = 4,5-
phthalate 4,5-dioxygenase (EC 1.14.12.7)
phthalate 4,5-dioxygenase. EC 1.14.12.7.. phthalate + NADH + O2 + H(+) = cis-4,5-dihydroxycyclohexa-2,6-diene-1,2-
phthalyl amidase (EC 3.5.1.79)
phthalyl amidase. EC 3.5.1.79.. a phtalamide + H2O = phthalate + a primary amine.
phthioceranic/hydroxyphthioceranic acid synthase (EC 2.3.1.287)
phthioceranic/hydroxyphthioceranic acid synthase. EC 2.3.1.287.. (1) hexadecanoyl-[(hydroxy)phthioceranic acid synthase] + 8 (S)-
phycobiliprotein beta-cysteine-155 phycobilin lyase (EC 4.4.1.30)
phycobiliprotein beta-cysteine-155 phycobilin lyase. EC 4.4.1.30.. (1) phycocyanobilin-L-cysteinyl(155)-[C-phycocyanin beta-subunit] = apo-
phycobiliprotein cysteine-84 phycobilin lyase (EC 4.4.1.29)
phycobiliprotein cysteine-84 phycobilin lyase. EC 4.4.1.29.. (1) phycocyanobilin-L-cysteinyl(84)-[C-phycocyanin beta-subunit] = apo-L-
phycocyanobilin:ferredoxin oxidoreductase (EC 1.3.7.5)
phycocyanobilin:ferredoxin oxidoreductase. EC 1.3.7.5.. (2R,3Z)-phycocyanobilin + 4 oxidized [2Fe-2S]-[ferredoxin] = biliverdin
phycoerythrobilin synthase (EC 1.3.7.6)
phycoerythrobilin synthase. EC 1.3.7.6.. (3Z)-phycoerythrobilin + 2 oxidized 2[4Fe-4S]-[ferredoxin] = biliverdin
phycoerythrobilin:ferredoxin oxidoreductase (EC 1.3.7.3)
phycoerythrobilin:ferredoxin oxidoreductase. EC 1.3.7.3.. (3Z)-phycoerythrobilin + oxidized 2[4Fe-4S]-[ferredoxin] = 15,16-
phycoerythrocyanin alpha-cysteine-84 phycoviolobilin lyase/isomerase (EC 4.4.1.31)
phycoerythrocyanin alpha-cysteine-84 phycoviolobilin lyase/isomerase. EC 4.4.1.31.. phycoviolobilin-L-cysteinyl(84)-[phycoerythrocyanin alpha-subunit] = apo-
phyllocladan-16alpha-ol synthase (EC 4.2.3.45)
phyllocladan-16alpha-ol synthase. EC 4.2.3.45.. (+)-copalyl diphosphate + H2O = phyllocladan-16alpha-ol + diphosphate.
phylloquinone monooxygenase (2,3-epoxidizing) (EC 1.14.99.20)
phylloquinone monooxygenase (2,3-epoxidizing). EC 1.14.99.20.. phylloquinone + AH2 + O2 = 2,3-epoxyphylloquinone + A + H2O.
phylloquinone omega-hydroxylase (EC 1.14.14.78)
phylloquinone omega-hydroxylase. EC 1.14.14.78.. phylloquinone + reduced [NADPH--hemoprotein reductase] + O2 = omega-
physarolisin (EC 3.4.21.103)
physarolisin. EC 3.4.21.103.. Milk clotting activity. Preferential cleavage of 8-Gly-|-Ser-9 in B chain
Physarum polycephalum ribonuclease (EC 3.1.26.1)
Physarum polycephalum ribonuclease. EC 3.1.26.1.. Endonucleolytic cleavage to 5'-phosphomonoester.
phytanate--CoA ligase (EC 6.2.1.24)
phytanate--CoA ligase. EC 6.2.1.24.. 3,7,11,15-tetramethylhexadecanoate + ATP + CoA = phytanoyl-CoA + AMP +
phytanoyl-CoA dioxygenase (EC 1.14.11.18)
phytanoyl-CoA dioxygenase. EC 1.14.11.18.. phytanoyl-CoA + 2-oxoglutarate + O2 = 2-hydroxyphytanoyl-CoA +
phytepsin (EC 3.4.23.40)
phytepsin. EC 3.4.23.40.. Prefers hydrophobic residues Phe, Val, Ile, Leu, and Ala at P1 and P1',
phytochromobilin:ferredoxin oxidoreductase (EC 1.3.7.4)
phytochromobilin:ferredoxin oxidoreductase. EC 1.3.7.4.. (3Z)-phytochromobilin + 2 oxidized [2Fe-2S]-[ferredoxin] = biliverdin
phytoene desaturase (3,4-didehydrolycopene-forming) (EC 1.3.99.30)
phytoene desaturase (3,4-didehydrolycopene-forming). EC 1.3.99.30.. 15-cis-phytoene + 5 A = all-trans-3,4-didehydrolycopene + 5 AH2.
phytoene desaturase (lycopene-forming) (EC 1.3.99.31)
phytoene desaturase (lycopene-forming). EC 1.3.99.31.. 15-cis-phytoene + 4 A = all-trans-lycopene + 4 AH2.
phytoene desaturase (neurosporene-forming) (EC 1.3.99.28)
phytoene desaturase (neurosporene-forming). EC 1.3.99.28.. 15-cis-phytoene + 3 A = all-trans-neurosporene + 3 AH2.
phytoene desaturase (zeta-carotene-forming) (EC 1.3.99.29)
phytoene desaturase (zeta-carotene-forming). EC 1.3.99.29.. 15-cis-phytoene + 2 A = all-trans-zeta-carotene + 2 AH2.
phytol kinase (EC 2.7.1.182)
phytol kinase. EC 2.7.1.182.. phytol + CTP = phytyl phosphate + CDP + H(+).
phytol O-acyltransferase (EC 2.3.1.314)
phytol O-acyltransferase. EC 2.3.1.314.. phytol + a fatty acyl-CoA = a fatty acid phytyl ester + CoA.
picornain 2A (EC 3.4.22.29)
picornain 2A. EC 3.4.22.29.. Selective cleavage of Tyr-|-Gly bond in the picornavirus polyprotein.
picornain 3C (EC 3.4.22.28)
picornain 3C. EC 3.4.22.28.. Selective cleavage of Gln-|-Gly bond in the poliovirus polyprotein. In
pikromycin synthase (EC 1.14.15.33)
pikromycin synthase. EC 1.14.15.33.. (1) narbomycin + 2 reduced [2Fe-2S]-[ferredoxin] + O2 + 2 H(+) =
pimaradiene synthase (EC 4.2.3.147)
pimaradiene synthase. EC 4.2.3.147.. (+)-copalyl diphosphate = (-)-pimara-8(14),15-diene + diphosphate.
pimeloyl-[acyl-carrier protein] methyl ester esterase (EC 3.1.1.85)
pimeloyl-[acyl-carrier protein] methyl ester esterase. EC 3.1.1.85.. 6-carboxyhexanoyl-[ACP] methyl ester + H2O = 6-carboxyhexanoyl-[ACP] +
pimeloyl-[acyl-carrier protein] synthase (EC 1.14.14.46)
pimeloyl-[acyl-carrier protein] synthase. EC 1.14.14.46.. a C2-C8-saturated long-chain fatty acyl-[ACP] + 2 reduced [flavodoxin] +
pimeloyl-CoA dehydrogenase (EC 1.3.1.62)
pimeloyl-CoA dehydrogenase. EC 1.3.1.62.. 6-carboxyhexanoyl-CoA + NAD(+) = 6-carboxyhex-2-enoyl-CoA + NADH + H(+).
pinosylvin synthase (EC 2.3.1.146)
pinosylvin synthase. EC 2.3.1.146.. (E)-cinnamoyl-CoA + 3 malonyl-CoA + 3 H(+) = (E)-pinosylvin + 4 CO2 +
piperidine N-piperoyltransferase (EC 2.3.1.145)
piperidine N-piperoyltransferase. EC 2.3.1.145.. piperidine + (E,E)-piperoyl-CoA = piperine + CoA + H(+).
pitrilysin (EC 3.4.24.55)
pitrilysin. EC 3.4.24.55.. Preferential cleavage of 16-Tyr-|-Leu-17 and 25-Phe-|-Tyr-26 bonds of
plant 3beta-hydroxysteroid-4alpha-carboxylate 3-dehydrogenase (EC 1.1.1.418)
plant 3beta-hydroxysteroid-4alpha-carboxylate 3-dehydrogenase. EC 1.1.1.418.. a 3beta-hydroxysteroid-4alpha-carboxylate + NAD(+) = a 3-oxosteroid +
plant 4,4-dimethylsterol C-4alpha-methyl-monooxygenase (EC 1.14.18.10)
plant 4,4-dimethylsterol C-4alpha-methyl-monooxygenase. EC 1.14.18.10.. 24-methylenecycloartanol + 6 Fe(II)-[cytochrome b5] + 3 O2 + 5 H(+) =
plant 4alpha-monomethylsterol monooxygenase (EC 1.14.18.11)
plant 4alpha-monomethylsterol monooxygenase. EC 1.14.18.11.. 24-methylidenelophenol + 6 Fe(II)-[cytochrome b5] + 3 O2 + 5 H(+) =
plant cystathionine gamma-synthase (EC 2.5.1.160)
plant cystathionine gamma-synthase. EC 2.5.1.160.. O-phospho-L-homoserine + L-cysteine = L,L-cystathionine + phosphate.