Genetic and physiological regulation of intrinsic proteins of the outer membrane of Salmonella typhimurium.
Four major outer membrane polypeptides, accounting for approximately 20% of the total protein of the outer membrane of Salmonella typhimurium, were induced by growth in minimal medium. The polypeptides were tightly bound membrane components. Physiological and genetic evidence indicates that the four polypeptides fall in two separate regulation groups. Synthesis of one of these groups was coordinately regulated by the concentration of iron in the medium, and a mutant strain has been identified in which there is constitutive synthesis of this group of major outer membrane proteins.
17 references, click to expand
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