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View into the PTC (rRNA backbone in grey), in which the approximate peptide bond formation position is marked by a blue circle, and the A- and P-sites tRNA 3′-ends are marked by A and P. Shown also are the locations of two components of Synercid™ (chemical formulas shown on the right side) within the PTC and in the tunnel’s entrance (dalfopristin in cyan and quinupristin in green). Note the swung location, out of the active site of nucleotide U2585 (in red).
