Modifies the free amino group of the aminoacyl moiety of methionyl-tRNA(fMet). The formyl group appears to play a dual role in the initiator identity of N-formylmethionyl-tRNA by: (I) promoting its recognition by IF2 and (II) impairing its binding to EFTu-GTP (By similarity). MSQALRIVFAGTPEFAAEHLKALLDTPHRIVAVYTQPDRPAGRGQKLMPSAVKSLALEHGLPVMQPQSLRNAEAQAELAALRADLMVVVAYGLILPQAVLDIPRLGCINSHASLLPRWRGAAPIQRAVEAGDAESGVTVMQMEAGLDTGPMLLKVSTPISAADTGGSLHDRLAALGPKAVVEAIAGLAAGTLHGEDQDDALATYAHKLNKDEARLDWSRPAVELERQVRAFTPWPVCHTSLADAPLKVLGASLGQGSGAPGTILEASRDGLLVACGEGALRLTRLQVPGGKPLAFADLYNSRREQFATGQVLGQ FMT_PSEAB PA14_00190 314 fmt Methionyl-tRNA formyltransferase