Methionyl-tRNA formyltransferase <p>Methionyl-tRNA formyltransferase (<db_xref db="EC" dbkey="2.1.2.9"/>) transfers a formyl group onto the amino terminus of the acyl moiety of the methionyl aminoacyl-tRNA. The formyl group appears to play a dual role in the initiator identity of N-formylmethionyl-tRNA by promoting its recognition by IF2 and by impairing its binding to EFTU-GTP. </p>