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 a 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 2 [+]   
EC 3 [+]   
EC 4 [+]   
EC 5 [+]   
EC 6 []   
    EC 6.1  []      
        EC 6.1.1       []    Ligases forming aminoacyl-tRNA and related compounds 
                EC 6.1.1.1                      tyrosine—tRNA ligase 
                EC 6.1.1.2                      tryptophan—tRNA ligase 
                EC 6.1.1.3                      threonine—tRNA ligase 
                EC 6.1.1.4                      leucine—tRNA ligase 
                EC 6.1.1.5                      isoleucine—tRNA ligase 
                EC 6.1.1.6                      lysine—tRNA ligase 
                EC 6.1.1.7                      alanine—tRNA ligase 
                EC 6.1.1.8                       D-alanine-sRNA synthetase 
                EC 6.1.1.9                      valine—tRNA ligase 
                EC 6.1.1.10                      methionine—tRNA ligase 
                EC 6.1.1.11                      serine—tRNA ligase 
                EC 6.1.1.12                      aspartate—tRNA ligase 
                EC 6.1.1.13                      D-alanine—poly(phosphoribitol) ligase 
                EC 6.1.1.14                      glycine—tRNA ligase 
                EC 6.1.1.15                      proline—tRNA ligase 
                EC 6.1.1.16                      cysteine—tRNA ligase 
                EC 6.1.1.17                      glutamate—tRNA ligase 
                EC 6.1.1.18                      glutamine—tRNA ligase 
                EC 6.1.1.19                      arginine—tRNA ligase 
                EC 6.1.1.20                      phenylalanine—tRNA ligase 
                EC 6.1.1.21                      histidine—tRNA ligase 
                EC 6.1.1.22                      asparagine—tRNA ligase 
                EC 6.1.1.23                      aspartate—tRNAAsn ligase 
                EC 6.1.1.24                      glutamate—tRNAGln ligase 
                EC 6.1.1.25                      lysine—tRNAPyl ligase. The tRNAPyl is now known only to be charged with pyrrolysine (cf. EC 6.1.1.26). 
                EC 6.1.1.26                      pyrrolysine—tRNAPyl ligase 
                EC 6.1.1.27                      O-phospho-L-serine—tRNA ligase 
                EC 6.1.1.28                      proline/cysteine—tRNA ligase. Later published work having demonstrated that this was not a genuine enzyme, EC 6.1.1.28 was withdrawn at the public-review stage before being made official. 
        EC 6.1.2       [+]    acid—alcohol ligases (ester synthases) 
        EC 6.1.3       [+]    Cyclo-ligases 
    EC 6.2  [+]      
    EC 6.3  [+]      
    EC 6.4  [+]      
    EC 6.5  [+]      
    EC 6.6  [+]      
    EC 6.7  [+]      
EC 7 [+]   


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