Figure 2 - full size

 

Figure 2.
FIGURE 2. The structure of HFBII in space group P2[1]. a, representative electron density of a detergent molecule (red) and the protein (blue). b, the packing of molecules in the asymmetric unit resembles the shape of a horseshoe. c, the formation of a layer structure with alternating hydrophobic and hydrophilic parts is produced by crystal packing (hydrophobic surface areas in red). d, ring-like packing occurs perpendicular to layers.

The above figure is reprinted by permission from the ASBMB: J Biol Chem (2007, 282, 28733-28739) copyright 2007.