Reaction details:
   
   
    
       | Reaction type level 1:  | 
       acetylation | 
    
   
       | Reaction type level 2:  | 
       condensation-cyclization | 
    
   
       | Reaction type level 3:  | 
       group addition | 
    
   
       | Input group:  | 
       H,H2 | 
    
   
   
   | Output group:  | 
   *=C(C)* | 
    
   
   | Introduced group name:  | 
   anhydro-acetic acid | 
    
   
   | Introduced group type:  | 
   hydrocarbon | 
    
   
   | Site:  | 
    | 
    
   
   
       | Atom address:  | 
       N1.C1, N2 | 
    
   
       | Modification level:  | 
       2 | 
    
   
 
Enzymes that catalyse this reaction:
    
        
            | Acronym | 
            Full name | 
 
            Organism | 
         
    
    
    
    
        
            | TYW1 | 
            tRNA wybutosine-synthesizing protein 1 | 
 
            Saccharomyces cerevisiae | 
         
    
        
            | Taw1 | 
            tRNA wyosine derivatives biosynthesis protein Taw1 | 
 
            Methanocaldococcus jannaschii | 
         
    
        
            | Taw1 | 
            S-adenosyl-L-methionine-dependent tRNA 4-demethylwyosine synthase | 
 
            Pyrococcus abyssi | 
         
    
    
    
 
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