| Bud23 | 
            Bud23 | 
 
            Saccharomyces cerevisiae | 
        
    
        
            | Bud32 | 
            Serine/threonine-protein kinase BUD32 | 
 
            Saccharomyces cerevisiae | 
        
    
        
            | Sua5 | 
            tRNA threonylcarbamoyladenosine biosynthesis protein SUA5 | 
 
            Saccharomyces cerevisiae | 
        
    
        
            | TsaD | 
            tRNA N6-threonylcarbamoyladenosine(37) synthesis protein | 
 
            Escherichia coli | 
        
    
        
            | yrdC | 
            L-threonylcarbamoyladenylate synthas | 
 
            Haloferax volcanii | 
        
    
        
            | yrdC | 
            L-threonylcarbamoyladenylate synthas | 
 
            Methanococcus maripaludis |