Fig 4.

Roles of the AmiA1 and AmiA3 oligopeptide binding proteins in the import of ComS_17–24. The graph shows the growth (OD₆₀₀; gray symbols) and relative luciferase activities (RLU/OD₆₀₀; black symbols) in CDM supplemented with 0.05 μM ComS_17–24 of strains containing a comX-luxAB fusion in a ΔcomS background (TIL1391; squares) or a deletion of amiA1 (TIL1394; diamonds), amiA3 (TIL1392; stars), or both amiA1 and amiA3 (TIL1393; circles). The data shown are representative of three independent experiments.