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.
ribitol 2-dehydrogenase (EC 1.1.1.56)
ribitol 2-dehydrogenase. EC 1.1.1.56.. ribitol + NAD(+) = D-ribulose + NADH + H(+).
ribitol-5-phosphate 2-dehydrogenase (EC 1.1.1.137)
ribitol-5-phosphate 2-dehydrogenase. EC 1.1.1.137.. (1) D-ribitol 5-phosphate + NADP(+) = D-ribulose 5-phosphate + NADPH +
ribitol-5-phosphate 2-dehydrogenase (NADP(+)) (EC 1.1.1.405)
ribitol-5-phosphate 2-dehydrogenase (NADP(+)). EC 1.1.1.405.. D-ribitol 5-phosphate + NADP(+) = D-ribulose 5-phosphate + NADPH + H(+).
riboflavin kinase (EC 2.7.1.26)
riboflavin kinase. EC 2.7.1.26.. riboflavin + ATP = FMN + ADP + H(+).
riboflavin phosphotransferase (EC 2.7.1.42)
riboflavin phosphotransferase. EC 2.7.1.42.. riboflavin + alpha-D-glucose 1-phosphate = FMN + D-glucose.
riboflavin reductase [NAD(P)H] (EC 1.5.1.41)
riboflavin reductase [NAD(P)H]. EC 1.5.1.41.. (1) reduced riboflavin + NAD(+) = riboflavin + NADH + 2 H(+).
riboflavin synthase (EC 2.5.1.9)
riboflavin synthase. EC 2.5.1.9.. 2 6,7-dimethyl-8-(1-D-ribityl)lumazine + H(+) = 5-amino-6-
riboflavinase (EC 3.5.99.1)
riboflavinase. EC 3.5.99.1.. riboflavin + H2O + H(+) = lumichrome + ribitol.
ribokinase (EC 2.7.1.15)
ribokinase. EC 2.7.1.15.. D-ribose + ATP = D-ribose 5-phosphate + ADP + H(+).
ribonuclease [poly-(U)-specific] (EC 3.1.26.9)
ribonuclease [poly-(U)-specific]. EC 3.1.26.9.. Endonucleolytic cleavage of poly(U) to fragments terminated by 3'-hydroxy
ribonuclease alpha (EC 3.1.26.2)
ribonuclease alpha. EC 3.1.26.2.. Endonucleolytic cleavage to 5'-phosphomonoester.
ribonuclease D (EC 3.1.13.5)
ribonuclease D. EC 3.1.13.5.. Exonucleolytic cleavage that removes extra residues from the 3'-terminus
ribonuclease E (EC 3.1.26.12)
ribonuclease E. EC 3.1.26.12.. Endonucleolytic cleavage of single-stranded RNA in A- and U-rich regions.
ribonuclease F (EC 3.1.27.7)
ribonuclease F. EC 3.1.27.7.. Endonucleolytic cleavage of RNA precursor into two, leaving 5'-hydroxy
ribonuclease H (EC 3.1.26.4)
ribonuclease H. EC 3.1.26.4.. Endonucleolytic cleavage to 5'-phosphomonoester.
ribonuclease III (EC 3.1.26.3)
ribonuclease III. EC 3.1.26.3.. Endonucleolytic cleavage to 5'-phosphomonoester.
ribonuclease IV (EC 3.1.26.6)
ribonuclease IV. EC 3.1.26.6.. Endonucleolytic cleavage of poly(A) to fragments terminated by 3'-hydroxy
ribonuclease IX (EC 3.1.26.10)
ribonuclease IX. EC 3.1.26.10.. Endonucleolytic cleavage of poly(U) or poly(C) to fragments terminated by
ribonuclease M5 (EC 3.1.26.8)
ribonuclease M5. EC 3.1.26.8.. Endonucleolytic cleavage of RNA, removing 21 and 42 nucleotides,
ribonuclease P (EC 3.1.26.5)
ribonuclease P. EC 3.1.26.5.. Endonucleolytic cleavage of RNA, removing 5'-extranucleotides from tRNA
ribonuclease P4 (EC 3.1.26.7)
ribonuclease P4. EC 3.1.26.7.. Endonucleolytic cleavage of RNA, removing 3'-extranucleotides from tRNA
ribonuclease T1 (EC 4.6.1.24)
ribonuclease T1. EC 4.6.1.24.. [RNA] containing guanosine + H2O = an [RNA fragment]-3'-guanosine-
ribonuclease T2 (EC 4.6.1.19)
ribonuclease T2. EC 4.6.1.19.. a ribonucleotidyl-ribonucleotide-RNA + H2O = a 3'-end 3'-phospho-
ribonuclease U2 (EC 4.6.1.20)
ribonuclease U2. EC 4.6.1.20.. (1) [RNA] containing adenosine + H2O = an [RNA fragment]-3'-adenosine-
ribonuclease V (EC 3.1.27.8)
ribonuclease V. EC 3.1.27.8.. Hydrolysis of poly(A), forming oligoribonucleotides and ultimately
ribonuclease Z (EC 3.1.26.11)
ribonuclease Z. EC 3.1.26.11.. Endonucleolytic cleavage of RNA, removing extra 3' nucleotides from tRNA
ribonucleoside-diphosphate reductase (EC 1.17.4.1)
ribonucleoside-diphosphate reductase. EC 1.17.4.1.. a 2'-deoxyribonucleoside 5'-diphosphate + [thioredoxin]-disulfide + H2O =
ribonucleoside-triphosphate reductase (formate) (EC 1.1.98.6)
ribonucleoside-triphosphate reductase (formate). EC 1.1.98.6.. a ribonucleoside 5'-triphosphate + formate + H(+) =
ribonucleoside-triphosphate reductase (thioredoxin) (EC 1.17.4.2)
ribonucleoside-triphosphate reductase (thioredoxin). EC 1.17.4.2.. a 2'-deoxyribonucleoside 5'-triphosphate + [thioredoxin]-disulfide +
ribose 1-dehydrogenase (NADP(+)) (EC 1.1.1.115)
ribose 1-dehydrogenase (NADP(+)). EC 1.1.1.115.. D-ribose + NADP(+) + H2O = D-ribonate + NADPH + 2 H(+).
ribose 1,5-bisphosphate phosphokinase (EC 2.7.4.23)
ribose 1,5-bisphosphate phosphokinase. EC 2.7.4.23.. alpha-D-ribose 1,5-bisphosphate + ATP = 5-phospho-alpha-D-ribose
ribose isomerase (EC 5.3.1.20)
ribose isomerase. EC 5.3.1.20.. aldehydo-D-ribose = D-ribulose.
ribose-1,5-bisphosphate isomerase (EC 5.3.1.29)
ribose-1,5-bisphosphate isomerase. EC 5.3.1.29.. alpha-D-ribose 1,5-bisphosphate = D-ribulose 1,5-bisphosphate.
ribose-5-phosphate isomerase (EC 5.3.1.6)
ribose-5-phosphate isomerase. EC 5.3.1.6.. aldehydo-D-ribose 5-phosphate = D-ribulose 5-phosphate.
ribose-5-phosphate--ammonia ligase (EC 6.3.4.7)
ribose-5-phosphate--ammonia ligase. EC 6.3.4.7.. D-ribose 5-phosphate + NH4(+) + ATP = 5-phospho-beta-D-ribosylamine +
ribose-phosphate diphosphokinase (EC 2.7.6.1)
ribose-phosphate diphosphokinase. EC 2.7.6.1.. D-ribose 5-phosphate + ATP = 5-phospho-alpha-D-ribose 1-diphosphate +
ribosomal protein uL3 N(5)-glutamine methyltransferase (EC 2.1.1.298)
ribosomal protein uL3 N(5)-glutamine methyltransferase. EC 2.1.1.298.. L-glutaminyl-[ribosomal protein uL3] + S-adenosyl-L-methionine = N(5)-
ribostamycin 4-(gamma-L-glutamylamino)-(S)-2-hydroxybutanoate (EC 2.3.2.19)
ribostamycin 4-(gamma-L-glutamylamino)-(S)-2-hydroxybutanoate. EC 2.3.2.19.. 4-(gamma-L-glutamylamino)-(2S)-2-hydroxybutanoyl-[BtrI ACP] +
ribosyldihydronicotinamide dehydrogenase (quinone) (EC 1.10.5.1)
ribosyldihydronicotinamide dehydrogenase (quinone). EC 1.10.5.1.. 1-(beta-D-ribofuranosyl)-1,4-dihydronicotinamide + a quinone + H(+) =
ribosylnicotinamide kinase (EC 2.7.1.22)
ribosylnicotinamide kinase. EC 2.7.1.22.. beta-nicotinamide D-riboside + ATP = beta-nicotinamide D-ribonucleotide +
ribosylpyrimidine nucleosidase (EC 3.2.2.8)
ribosylpyrimidine nucleosidase. EC 3.2.2.8.. a pyrimidine ribonucleoside + H2O = a pyrimidine nucleobase + D-ribose.
ribotoxin (EC 4.6.1.23)
ribotoxin. EC 4.6.1.23.. a 28S rRNA containing guanosine-adenosine pair + H2O = an [RNA fragment]-
ribulokinase (EC 2.7.1.16)
ribulokinase. EC 2.7.1.16.. (1) L-ribulose + ATP = L-ribulose 5-phosphate + ADP + H(+).
ribulose-1,5-bisphosphate 5-phosphatase (EC 3.1.3.109)
ribulose-1,5-bisphosphate 5-phosphatase. EC 3.1.3.109.. D-ribulose 1,5-bisphosphate + H2O = D-ribulose 1-phosphate + phosphate.
ribulose-bisphosphate carboxylase (EC 4.1.1.39)
ribulose-bisphosphate carboxylase. EC 4.1.1.39.. 2 (2R)-3-phosphoglycerate + 2 H(+) = D-ribulose 1,5-bisphosphate + CO2 +
ribulose-phosphate 3-epimerase (EC 5.1.3.1)
ribulose-phosphate 3-epimerase. EC 5.1.3.1.. D-ribulose 5-phosphate = D-xylulose 5-phosphate.
ricinine nitrilase (EC 3.5.5.2)
ricinine nitrilase. EC 3.5.5.2.. ricinine + 2 H2O = 4-methoxy-1-methyl-2-oxo-1,2-dihydropyridine-3-
rifampicin monooxygenase (EC 1.14.13.211)
rifampicin monooxygenase. EC 1.14.13.211.. (1) rifampicin + NADPH + O2 = rifampicin para-naphthoquinone carboxamide
rifampicin phosphotransferase (EC 2.7.9.6)
rifampicin phosphotransferase. EC 2.7.9.6.. rifampicin + ATP + H2O = 21-phosphorifampicin + AMP + phosphate + 2 H(+).
rifamycin-B oxidase (EC 1.10.3.6)
rifamycin-B oxidase. EC 1.10.3.6.. rifamycin B + O2 + 2 H(+) = rifamycin O + H2O2.
RING-type E3 ubiquitin transferase (cysteine targeting) (EC 2.3.2.36)
RING-type E3 ubiquitin transferase (cysteine targeting). EC 2.3.2.36.. [E2 ubiquitin-conjugating enzyme]-S-ubiquitinyl-L-cysteine + [acceptor
RING-type E3 ubiquitin transferase (EC 2.3.2.27)
RING-type E3 ubiquitin transferase. EC 2.3.2.27.. S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor
RNA 2',3'-cyclic 3'-phosphodiesterase (EC 3.1.4.58)
RNA 2',3'-cyclic 3'-phosphodiesterase. EC 3.1.4.58.. a 3'-end 2',3'-cyclophospho-ribonucleotide-RNA + H2O = a 3'-end
RNA 3'-5' helicase (EC 5.6.2.6)
RNA 3'-5' helicase. EC 5.6.2.6.. n ATP + n H2O + wound RNA = n ADP + n phosphate + unwound RNA.
RNA 3'-terminal-phosphate cyclase (ATP) (EC 6.5.1.4)
RNA 3'-terminal-phosphate cyclase (ATP). EC 6.5.1.4.. a 3'-end 3'-phospho-ribonucleotide-RNA + ATP = a 3'-end
RNA 3'-terminal-phosphate cyclase (GTP) (EC 6.5.1.5)
RNA 3'-terminal-phosphate cyclase (GTP). EC 6.5.1.5.. a 3'-end 3'-phospho-ribonucleotide-RNA + GTP = a 3'-end
RNA 5'-3' helicase (EC 5.6.2.5)
RNA 5'-3' helicase. EC 5.6.2.5.. n ATP + n H2O + wound RNA = n ADP + n phosphate + unwound RNA.
RNA helicase (EC 3.6.4.13)
RNA helicase. EC 3.6.4.13.. ATP + H2O = ADP + phosphate + H(+).
RNA ligase (ATP) (EC 6.5.1.3)
RNA ligase (ATP). EC 6.5.1.3.. ATP + (ribonucleotide)n-3'-hydroxyl + 5'-phospho-(ribonucleotide)m =
RNA uridylyltransferase (EC 2.7.7.52)
RNA uridylyltransferase. EC 2.7.7.52.. RNA(n) + UTP = RNA(n)-3'-uridine ribonucleotide + diphosphate.