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L9 on the ribosome. A rendering of a crystal structure of the E. coli ribosome with L9 conservation is shown in two views (Protein Data Bank files 2i2t and 2i2p). The 50S and 30S subunits are indicated with 23S rRNA in pink, and 16S rRNA is in slate. The locations of the peptidyltransferase center (PTC) and the P-site are highlighted. L9 is surface rendered in blue, with invariant amino acids in red. The hop-1 residue that affects translation bypass, Ser93, is colored green.
