The Enzyme Database

Table of Contents

The enzymes in this section of the database are organized as you would find them in the Enzyme-Nomenclature book. Click [+] to expand, and [–] to collapse, any section. Clicking on a heading will open popup window with information on that class, subclass or sub-subclass.

For a fully expanded list of the classes, subclasses and sub-subclasses, click here

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EC 1 [+]   
EC 2 []   
    EC 2.1  [+]      
    EC 2.2  [+]      
    EC 2.3  [+]      
    EC 2.4  []      
        EC 2.4.1       [+]    Hexosyltransferases 
        EC 2.4.2       []    Pentosyltransferases 
                EC 2.4.2.1                      purine-nucleoside phosphorylase 
                EC 2.4.2.2                      pyrimidine-nucleoside phosphorylase 
                EC 2.4.2.3                      uridine phosphorylase 
                EC 2.4.2.4                      thymidine phosphorylase 
                EC 2.4.2.5                      nucleoside ribosyltransferase 
                EC 2.4.2.6                      nucleoside deoxyribosyltransferase 
                EC 2.4.2.7                      adenine phosphoribosyltransferase 
                EC 2.4.2.8                      hypoxanthine phosphoribosyltransferase 
                EC 2.4.2.9                      uracil phosphoribosyltransferase 
                EC 2.4.2.10                      orotate phosphoribosyltransferase 
                EC 2.4.2.11                      nicotinate phosphoribosyltransferase. Now EC 6.3.4.21, nicotinate phosphoribosyltransferase. 
                EC 2.4.2.12                      nicotinamide phosphoribosyltransferase 
                EC 2.4.2.13                      now EC 2.5.1.6 methionine adenosyltransferase 
                EC 2.4.2.14                      amidophosphoribosyltransferase 
                EC 2.4.2.15                      guanosine phosphorylase 
                EC 2.4.2.16                      urate-ribonucleotide phosphorylase 
                EC 2.4.2.17                      ATP phosphoribosyltransferase 
                EC 2.4.2.18                      anthranilate phosphoribosyltransferase 
                EC 2.4.2.19                      nicotinate-nucleotide diphosphorylase (carboxylating) 
                EC 2.4.2.20                      dioxotetrahydropyrimidine phosphoribosyltransferase 
                EC 2.4.2.21                      nicotinate-nucleotide—dimethylbenzimidazole phosphoribosyltransferase 
                EC 2.4.2.22                      xanthine phosphoribosyltransferase 
                EC 2.4.2.23                      deoxyuridine phosphorylase. This activity has been shown to be catalysed by EC 2.4.2.2, pyrimidine-nucleoside phosphorylase, EC 2.4.2.3, uridine phosphorylase, and EC 2.4.2.4, thymidine phosphorylase. 
                EC 2.4.2.24                      1,4-β-D-xylan synthase 
                EC 2.4.2.25                      flavone apiosyltransferase 
                EC 2.4.2.26                      protein xylosyltransferase 
                EC 2.4.2.27                      dTDP-dihydrostreptose—streptidine-6-phosphate dihydrostreptosyltransferase 
                EC 2.4.2.28                      S-methyl-5′-thioadenosine phosphorylase 
                EC 2.4.2.29                      tRNA-guanosine34 transglycosylase 
                EC 2.4.2.30                      NAD+ ADP-ribosyltransferase 
                EC 2.4.2.31                      NAD+—protein-arginine ADP-ribosyltransferase 
                EC 2.4.2.32                      dolichyl-phosphate D-xylosyltransferase 
                EC 2.4.2.33                      dolichyl-xylosyl-phosphate—protein xylosyltransferase 
                EC 2.4.2.34                      indolylacetylinositol arabinosyltransferase 
                EC 2.4.2.35                      flavonol-3-O-glycoside xylosyltransferase 
                EC 2.4.2.36                      NAD+—diphthamide ADP-ribosyltransferase 
                EC 2.4.2.37                      NAD+—dinitrogen-reductase ADP-D-ribosyltransferase 
                EC 2.4.2.38                      glycoprotein 2-β-D-xylosyltransferase 
                EC 2.4.2.39                      xyloglucan 6-xylosyltransferase 
                EC 2.4.2.40                      zeatin O-β-D-xylosyltransferase 
                EC 2.4.2.41                      xylogalacturonan β-1,3-xylosyltransferase 
                EC 2.4.2.42                      UDP-D-xylose:β-D-glucoside α-1,3-D-xylosyltransferase 
                EC 2.4.2.43                      lipid IVA 4-amino-4-deoxy-L-arabinosyltransferase 
                EC 2.4.2.44                      S-methyl-5′-thioinosine phosphorylase 
                EC 2.4.2.45                      decaprenyl-phosphate phosphoribosyltransferase 
                EC 2.4.2.46                      galactan 5-O-arabinofuranosyltransferase 
                EC 2.4.2.47                      arabinofuranan 3-O-arabinosyltransferase 
                EC 2.4.2.48                      tRNA-guanine15 transglycosylase 
                EC 2.4.2.49                      neamine phosphoribosyltransferase 
                EC 2.4.2.50                      cyanidin 3-O-galactoside 2′′-O-xylosyltransferase 
                EC 2.4.2.51                      anthocyanidin 3-O-glucoside 2′′′-O-xylosyltransferase 
                EC 2.4.2.52                      triphosphoribosyl-dephospho-CoA synthase 
                EC 2.4.2.53                      undecaprenyl-phosphate 4-deoxy-4-formamido-L-arabinose transferase 
                EC 2.4.2.54                      β-ribofuranosylphenol 5′-phosphate synthase 
                EC 2.4.2.55                      nicotinate D-ribonucleotide:phenol phospho-D-ribosyltransferase 
                EC 2.4.2.56                      kaempferol 3-O-xylosyltransferase 
                EC 2.4.2.57                      AMP phosphorylase 
                EC 2.4.2.58                      hydroxyproline O-arabinosyltransferase 
        EC 2.4.99       [+]    Transferring other glycosyl groups 
    EC 2.5  [+]      
    EC 2.6  [+]      
    EC 2.7  [+]      
    EC 2.8  [+]      
    EC 2.9  [+]      
    EC 2.10  [+]      
EC 3 [+]   
EC 4 [+]   
EC 5 [+]   
EC 6 [+]   


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