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Inhibition of Proteus mirabilis growth by cerulenin, a specific inhibitor of fatty acid biosynthesis, was reversed by exogenously supplied fatty acid mixtures containing oleic acid and palmitic or pentadecanoic acids. The growth rate of the cells treated with cerulenin in the presence of the fatty
The chemical composition and serological activity of free lipid A from Proteus were studied. Only two fatty acids: myristic acid and 3-hydroxymyristic acid were detected. When calculated for glucosamine disaccharide unit, 2 moles of ester-linked and 1 mole of amide-linked fatty acid are present.
Two proteins with apparent molecular weights of 39,000 and 36,000 (M(r) 39,000 and M(r) 36,000, respectively) were isolated from the outer membrane of Proteus mirabilis 19. M(r) 36,000 was shown to be free of detectable amounts of the M(r) 39,000 protein by sodium dodecyl sulfate-polyacrylamide gel