a robust equation that relates aminoacyl-trna levels to suppressor efficiency is developed in order to resolve effects on trna levels and on ribosomal steps : e = a/ ( k + a ) , where e is efficiency , a is aminoacyl-trna concentration , and k is the effective concentration , or cellular trna content required for an individual trna to have an efficiency of 0.50 .
C0035553
ribosomal
C0007634
cellular