Figure 1 - full size

 

Figure 1.
Figure 1 View of the active site: the omit map is contoured at the 1.5 [118][sigma] level around the 5-amino-6-nitrouracil with the model superimposed. Graphics were created using MOLSCRIPT (Kraulis, 1991[119] [Kraulis, P. E. (1991). J. Appl. Cryst. 24, 946-950.]-[120][bluearr.gif] ) and rendered using RASTER3D (Merritt & Murphy, 1994[121] [Merritt, E. A. & Murphy, M. E. P. (1994). Acta Cryst. D50, 869-873.]-[122][bluearr.gif] ).

The above figure is reprinted by permission from the IUCr: Acta Crystallogr D Biol Crystallogr (2005, 61, 218-229) copyright 2005.