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

[+subclass]. [+sub-subclass]. [+serial]

EC 1 []   
    EC 1.1  [+]      
    EC 1.2  [+]      
    EC 1.3  [+]      
    EC 1.4  [+]      
    EC 1.5  [+]      
    EC 1.6  [+]      
    EC 1.7  []      
        EC 1.7.1       [+]    With NAD+ or NADP+ as acceptor 
        EC 1.7.2       [+]    With a cytochrome as acceptor 
        EC 1.7.3       [+]    With oxygen as acceptor 
        EC 1.7.5       [+]    With a quinone or similar compound as acceptor 
        EC 1.7.6       [+]    With a nitrogenous group as acceptor 
        EC 1.7.7       [+]    With an iron-sulfur protein as acceptor 
        EC 1.7.9       [+]    With a copper protein as acceptor 
        EC 1.7.99       []    With unknown physiological acceptors 
                EC 1.7.99.1                      hydroxylamine reductase 
                EC 1.7.99.2                       nitric-oxide reductase. Reaction may have been due to the combined action of EC 1.7.99.6 nitrous-oxide reductase and EC 1.7.99.7 nitric-oxide reductase 
                EC 1.7.99.3                      nitrite reductase. Now included with EC 1.7.2.1, nitrite reductase (NO-forming) 
                EC 1.7.99.4                      nitrate reductase, Now EC 1.7.1.1, nitrate reductase (NADH), EC 1.7.1.2, nitrate reductase [NAD(P)H], EC 1.7.1.3, nitrate reductase (NADPH), EC 1.7.5.1, nitrate reductase (quinone), EC 1.7.7.2, nitrate reductase (ferredoxin) and EC 1.9.6.1, nitrate reductase (cytochrome) 
                EC 1.7.99.5                       5,10-methylenetetrahydrofolate reductase (FADH2). Now included with EC 1.5.1.20, methylenetetrahydrofolate reductase [NAD(P)H]. Based on the reference, it had been thought that this was a separate enzyme from EC 1.5.1.20 but the reference upon which the entry was based has since been disproved 
                EC 1.7.99.6                      EC 1.7.99.6, nitrous-oxide reductase. Now EC 1.7.2.4. 
                EC 1.7.99.7                      nitric-oxide reductase. Now EC 1.7.2.5 nitric oxide reductase (cytochrome c) 
                EC 1.7.99.8                      hydrazine oxidoreductase. Now classified as EC 1.7.2.8, hydrazine dehydrogenase. 
    EC 1.8  [+]      
    EC 1.9  [+]      
    EC 1.10  [+]      
    EC 1.11  [+]      
    EC 1.12  [+]      
    EC 1.13  [+]      
    EC 1.14  [+]      
    EC 1.15  [+]      
    EC 1.16  [+]      
    EC 1.17  [+]      
    EC 1.18  [+]      
    EC 1.19  [+]      
    EC 1.20  [+]      
    EC 1.21  [+]      
    EC 1.22  [+]      
    EC 1.23  [+]      
    EC 1.97  [+]      
    EC 1.98  [+]      
    EC 1.99  [+]      
EC 2 [+]   
EC 3 [+]   
EC 4 [+]   
EC 5 [+]   
EC 6 [+]   


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