Figure 4 - full size

 

Figure 4.
Fig. 4. Unexpected class-specific surface suggests another interaction surface. This view is rotated 90° about the x axis relative to Fig. 3, placing the six-stranded -sheet in the foreground. The color code is the same as that of Fig. 3a. (a) The CPK surface. (b) A backbone ribbon of KI-FHA in the same orientation as a.