Abstract
The ability of Bdellovibrio sp. to acquire the OmpF major outer membrane protein from its Escherichia coli prey was examined to determine if there were other outer membrane proteins which could or could not be acquired. Growth of bdellovibrios on mutant prey which were defective in the expression of outer membrane proteins revealed that Bdellovibrio sp. could acquire the OmpC protein in the absence of the OmpF protein. However, the OmpA, LamB, and protein 2 proteins could not be found in the Bdellovibrio Triton-insoluble outer membrane. The disappearance of the OmpF and OmpC proteins from the bdelloplast surface was measured, and it was determined that Bdellovibrio sp. exhibited a kinetic and temporal preference for the OmpF protein. Bdellovibrios could be grown on porin-deficient prey, and the progeny bdellovibrios possessed outer membranes with a protein mass deficiency.
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