FIG. 7.

Effects of an ompC deletion on OmpF protein levels and an ompF deletion on OmpC protein levels. (a) White bars, MDG131 (OmpC⁺); grey bars, EPB16 (OmpC⁻). (b) White bars, MDG147 (OmpF⁺); grey bars, EPB24 (OmpF⁻). Cultures were grown in minimal glycerol medium supplemented with the indicated concentrations of sucrose. Western blots were performed with antibodies that cross-react with both porins and with the structural protein OmpA. The data in panels a and b represent the averages of results from three and two independent measurements, respectively, and the error bars denote the corresponding standard deviations.