Figure 6 - full size

 

Figure 6.
Figure 6. (a) Stereoscopic view of the electron density of a representative groove, showing the hydration spine. All 16 crystallographically independent grooves have similar hydration spines. For clarity, the electron density is shown only for the water molecules (small red spheres). Hydrogen bonds are indicated by broken lines. (b) A stereoscopic view of hydration within the grooves: the distribution of water molecules around the averaged guanine:guanine base pair. (c) A stereoscopic view of the distribution of water molecules around the 28 observed thymine bases.

The above figure is reprinted by permission from Elsevier: J Mol Biol (1997, 273, 171-182) copyright 1997.