Figure 2 - full size

 

Figure 2.
Fig. 2. The electron density map (2F0--Fc) around residue 41 for (a) the reduced form and (b) the oxidized form. In the reduced form, there are two different conformations of Leu 41 side chain. When the side chain of Leu 41 is in the open conformation, a water molecule (depicted by a star) can be placed in the electron density on the other side in hydrogen bonding distance of the S> atom of Cys 9.

The above figure is reprinted from an Open Access publication published by the Protein Society: Protein Sci (2001, 10, 613-621) copyright 2001.