In bacteria, the methionine that initiates the formation of a polypeptide chain differs from subsequently added methionines in that view available hint(s) in bacteria, the methionine that initiates the formation of a polypeptide chain differs from subsequently added methionines in that a formyl group is attached to the initiating methionine the initiating methionine is not an amino acid incorporation of the initial methionine does not require a trna its trna anticodon is not complementary to the aug codon