Fig. S3.
TraB does not confer self-recognition specificity. Coculture of three strains (DW1463, DW2201, and DW2242) that expressed different TraA receptors and identical TraBDK1622 protein led to selective binding. Strains are labeled as indicated. Interstrain binding (filled triangle). Schematic of all possible partner bindings are shown. One hundred interstrain clusters from three independent experiments were evaluated, and the percent of each partner pair is indicated (−, not detected). (Scale bar, 2 μm.)