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Location of the insertion domain of IF2mt relative to the binding site of eubacterial IF1 and anticodon stem-loop of the A-site tRNA on the small subunit. (A) IF1 (11) (green); (B) 37-aa insertion domain (red); and (C) anticodon stem-loop of the A-site tRNA (40) (blue). Landmarks: h44 and h18, 16S rRNA helices; and S12, ribosomal protein S12.
