FIGURE 5.

Schematic representation of the PorKLMNP T9SS core complex. Shown is a schematic of the PorKLMNP complex, highlighting the localizations and topologies of the proteins. The interactions defined by bacterial two-hybrid and co-immunoprecipitation assays are indicated by arrows. The oligomeric states of the proteins determined by gel filtration experiments are indicated in parentheses. The outer membrane-associated PorKN complex is depicted as a ring-like structure, as shown recently by negative stain electron microscopy (29).