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Structural features of the E. coli tmRNA(H8hp). Schematic representation of the secondary structure of tmRNA(H8hp) composed of the tRNA-like domain (TLD), the mRNA-like domain (MLD) encoding the ANH8 peptide, and four pseudoknots (pk1–pk4). Helices are numbered 1–12. Open and black circles highlight the resume codon (GCA) and two stop codons (UAA–UAA).
