Figure 4 - full size

Figure 4.
FIG. 4. A, schematic model of a two-dimers-to-two-dimers TraR-TraM complex. For clarity, just the TraR DNA binding domain (TraR DBD) is depicted. Red arrows represent the 2-fold axes of each TraR and TraM dimer. Two views are shown. B, molecular surface of the hypothetical TraR-TraM complex. The red filled circles indicate the putative position of an N-terminal His tag on TraM.