2.3.1.193 [elongator tRNAMet]-cytidine34 + ATP + acetyl-CoA tRNAMet cytidine acetyltransferase acetylates the wobble base C34 of the elongation-specific tRNAMet. TmcA specifically recognizes the anticodon stem of tRNAMet, thus distinguishing between tRNAMet and tRNAIle2, which is structurally similar and has the same anticodon loop