Figure 9 - full size

 

Figure 9.
Figure 9. Stereo iew of the 2 entral bse-pairs with the solvent molecules at 4-0 A from the 2 bromine atoms. Note the 2 water molecules H-bonding to the -4 of the cytosines.

The above figure is reprinted by permission from Elsevier: J Mol Biol (1986, 188, 707-719) copyright 1986.