Figure 2 - full size

 

Figure 2.
(a) View of the CSA electron density near helices H5 and H6. Residues with side chains within 5 Å of the density are identified. A sulfate group (sulfur, yellow; oxygen, red) has been placed in the density and is coordinated by the side chains of Lys1324, Arg1467 and Lys1504. The 2F[o] – F[c] map (dark blue) is contoured at 0.9 and the F[o] – F[c] map (cyan) is contoured at 2.5 . For clarity, Lys1327 is not shown. (b) Stereo view showing the CSA density, a sulfate group and the side chains of nearby residues. The DBL3x model without ligands was used to calculate phases for these maps.

The above figure is reprinted from an Open Access publication published by Macmillan Publishers Ltd: Nat Struct Biol (2008, 15, 932-938) copyright 2008.