Figure 2 - full size

 

Figure 2.
Figure 2. Ribbon diagram of Asp–His–Ser hydrogen-bonding network responsible for maintaining the integrity of the β-sheet within blade 2 of the β-propeller. His62 lies on the loop connecting blade 1 with blade 2. Trp90 and Asp91 represent the WD repeat of blade 2.

The above figure is reprinted by permission from the Protein Society: Protein Sci (2008, 17, 1771-1780) copyright 2008.