Reaction details:
   
   
    
       | Reaction type level 1:  | 
       5ʹ-5ʹ guanylylation | 
    
   
       | Reaction type level 2:  | 
       nucleotide addition | 
    
   
       | Reaction type level 3:  | 
       group addition | 
    
   
       | Input group:  | 
       *P(=O)(O)OP(=O)(O)O | 
    
   
   
   | Output group:  | 
   [O-]P(=O)(O)OC[C@@H]3O[C@H](n2cnc1c2N=C(N)NC1=O)[C@@H](O)[C@H]3O* | 
    
   
   | Introduced group name:  | 
   guanylyl | 
    
   
   | Introduced group type:  | 
   nucleotide | 
    
   
   | Site:  | 
   phosphate | 
    
   
   
       | Atom address:  | 
       O5'.P3 | 
    
   
       | Modification level:  | 
       0 | 
    
   
 
Enzymes that catalyse this reaction:
    
        
            | Acronym | 
            Full name | 
 
            Organism | 
         
    
    
    
    
        
            | Ceg1 | 
            mRNA-capping enzyme subunit alpha | 
 
            Saccharomyces cerevisiae | 
         
    
        
            | HCAP1 | 
            RNA-capping enzyme | 
 
            Homo sapiens | 
         
    
    
    
 
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