One of the most remarkable structural features observed A37. Quantification of defined aminoacetylated tRNAs in most of these tRNA Ser CAGs is that the nucleotide 5Јin cells demonstrated that 3% of the tRNA Ser CAGs adjacent to the anticodon (position 33) is occupied not by possessing m 1 G37 were, in fact, charged with leucine the conserved U residue (U33) but by a G residue (G33).