Figure 2 - full size

 

Figure 2.
Figure 2: MutY -DNA complex. a, Ribbon trace of the complex. DNA is shown in gold, oxoG in magenta, the substrate adenine in purple, the [4Fe -4S] domain in green, and the six-helix barrel domain in cyan. The C-terminal domain is coloured by secondary structure ( -strands, blue; helices, red). The sulphur and iron atoms of the [4Fe -4S] cluster are yellow and orange, respectively. See Supplementary Fig. S4 for a topology diagram. b, Same structure as in a, but rotated 90° towards the reader. The purple sphere indicates a Ca^2+ ion that is occluded in a. c, Structures of MutT13 and the EndoIII -DNA complex9. N and C termini are indicated.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nature (2004, 427, 652-656) copyright 2004.