Figure 2. A. Superimposed structures ofEco -GlnRS (pdb ID: 1gts; Helix-11-loop-Helix112) andEco -GluRS (pdb ID: 8i9i; Helix-8-loop-Helix-9-loop-Helix-10)
along with Eco -GlnRS-bound tRNAGln (pdb ID:
1gts). B. Sequence alignment of Eco -GlnRS andEco -GluRS corresponding to the structures shown in panel A.