Methionine Transport in Salmonella typhimurium: Evidence for at Least One Low-affinity Transport System
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چکیده
منابع مشابه
Methionine sulfoxide is transported by high-affinity methionine and glutamine transport systems in Salmonella typhimurium.
Three lines of evidence indicated that methionine sulfoxide is transported by the high-affinity methionine and glutamine transport systems in Salmonella typhimurium. First, methionine-requiring strains (metE) which have mutations affecting both of these transport systems (metP glnP) were unable to use methionine sulfoxide as a source of methionine. These strains could still grow on L-methionine...
متن کاملMethionine transport in wild-type and transport-defective mutants of Salmonella typhimurium.
Salmonella typhimurium possesses a permease specific for L-methionine (K, of 0.1 to 0-2 p ~ ) . Competition studies have shown that the permease has little or no affinity for the other L-amino acids commonly found in proteins. Methionine uptake was competitively inhibited by the growth inhj bitory analogues DLethionine, a-methyl-DL-methionine and DL-methionhe-DL-sulphoximine. Mutants resistant ...
متن کاملTransport of trehalose in Salmonella typhimurium.
We have studied trehalose uptake in Salmonella typhimurium and the possible involvement of the phosphoenolpyruvate:carbohydrate phosphotransferase system (PTS) in this process. Two transport systems could recognize and transport trehalose, the mannose PTS and the galactose permease. Uptake of trehalose via the latter system required that it be expressed constitutively (due to a galR or galC mut...
متن کاملTransport in bacteriophage P22-infected Salmonella typhimurium.
There was rapid efflux of L-leucine, L-phenylalanine, and alpha-methyl-D-glucoside after infection of Salmonella typhimurium with the clear plaque mutant C1 of phage P22. The efflux was similar to that observed with cyanide or arsenate treatment except that there was partial recovery in the case of phage infection and almost complete recovery under the condition of lysogeny. There was no efflux...
متن کاملRegulation of sulfate transport in Salmonella typhimurium.
Dreyfuss, Jacques (Princeton University, Princeton, N.J.), and Arthur B. Pardee. Regulation of sulfate transport in Salmonella typhimurium. J. Bacteriol. 91:2275-2280. 1966.-The transport of sulfate into Salmonella typhimurium is an active process. Intracellular and extracellular sulfate are in rapid equilibrium. Although the entry process requires energy, the exit of sulfate and the exchange o...
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ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1979
ISSN: 0022-1287
DOI: 10.1099/00221287-114-2-227