Figure 5 - full size

 

Figure 5.
Figure 5. The 2mF[o] - DF[c] electron density showing the double-conformation Cys14-Cys38 disulfide bridge and the internal water molecule Wat1 with its tetrahedral hydrogen bonds.

The above figure is reprinted by permission from Elsevier: J Mol Biol (2000, 295, 1237-1249) copyright 2000.