Additional file 3 .

Figure S3. Structure of archaeal (Panel A) and bacterial (Panel B) type LeuRSs complexed with tRNALeu. Panels A and B depict the structures of LeuRS from Pyrococcus horikoshii (1WZ2, [71]) and the Thermus thermophilus (2BYT [72]), respectively. The amino terminal portion of the protein that contains a strong phylogenetic signal is depicted in blue, the carboxy terminal part is less conserved between the domains is colored green. Atoms of side chains of amino acids within 6 Angstrom of the tRNA are depicted as space filling spheres, for the remainder of the protein only the alpha carbons of the protein backbone are depicted.

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Andam et al. BMC Evolutionary Biology 2012 12:85   doi:10.1186/1471-2148-12-85