the aminoacyl-trna synthetases from all three sources specific argining , isoleucine , leucine , phenylalanine , and valine , as well as the e. coli and yeast enzymes specific for methionine and the e. coli glutamyl-trna synthetase , used as substrates exclusively those trnas terminating in 3'-deoxyadenosine .
C0002529
aminoacyl-trna synthetases
C0017811
glutamyl-trna synthetase