Fig 7. Three-dimensional structure models of HrpG and HrpG-R210C C-terminal domains.

Modeling was done with the SwissModel-SPDViewer program based on the structure of OmpR from E. coli. Both structures are shown in a spatial orientation similar to that adopted by OmpR in its interaction with DNA [10]. α-helices are shown in pink while β-sheets in blue. In black the side chains of the amino acids arginine (R210) and cysteine (C210) are shown. W1 and W2: indicate wings 1 and 2, respectively; and α-helices 2 and 3 and the α-loop are also indicated.