Figure 6.

The overall structures of the three SpFakBs. The structures of the 3 SpFakBs were determined and are shown in ribbon diagram adjacent to the surface rendering. The surface Arg residue that is critical for FakA binding is located at the bottom right of each molecule and are shown as balls and sticks in the ribbon diagrams. The surface potential of each SpFakB show similar patterns of charge distribution. A, SpFakB1. B, SpFakB2. C, SpFakB3. The ribbon structures were rendered with PyMOL and the surface potentials were calculated with APBS in PyMOL.