Figure 3 - full size

 

Figure 3.
(a) Structure of the anticodon-binding domain (stereo view). Green, helices; blue, -strands; yellow, tRNA; red, anticodon nucleotides; ball-and-stick models, Glu418 and Glu420. (b) The recognition of the tRNA^Cys anticodon loop in the SepRS–tRNA^Cys–O-phosphoserine complex (stereo view). Pink and green mesh, |F[o] - F[c]| simulated-annealing omit electron density maps (3.0 ) for the tRNA anticodon loop nucleotides and the SepRS recognition residues, respectively. (c) Recognition of A36, G37 and A38. (d) Recognition of G34 and C35. Pink, the two residues (Glu418 and Glu420) that were mutated for engineering.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nat Struct Biol (2007, 14, 272-279) copyright 2007.