Phosphate starvation regulon of Salmonella typhimurium
نویسندگان
چکیده
منابع مشابه
Transcriptional analysis of the flagellar regulon of Salmonella typhimurium.
In Salmonella typhimurium, nearly 50 genes are involved in flagellar formation and function and constitute at least 13 different operons. In this study, we examined the transcriptional interaction among the flagellar operons by combined use of Mu d1(Apr Lac) cts62 and Tn10 insertion mutants in the flagellar genes. The results showed that the flagellar operons can be divided into three classes: ...
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Plasmids pPBP and pRS-XP containing the cloned genes for the Pseudomonas aeruginosa phosphate-starvation-inducible periplasmic phosphate-binding protein and outer membrane porin P (oprP), respectively, were introduced into various Escherichia coli Pho-regulon regulatory mutants. Using Western immunoblots and specific antisera, the production of both gene products was observed to be under the co...
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Salmonella typhimurium contains a transport system for sn-glycerol-3-phosphate that is inducible by growth on glycerol and sn-glycerol-3-phosphate. In fully induced cells, the system exhibited an apparent Km of 50 microM and a Vmax of 2.2 nmol/min . 10(8) cells. The corresponding system in Escherichia coli exhibits, under comparable conditions, a Km of 14 microM and a Vmax of 2.2 nmol/min . 10(...
متن کاملThe control region of the pdu/cob regulon in Salmonella typhimurium.
The pdu operon encodes proteins for the catabolism of 1,2-propanediol; the nearby cob operon encodes enzymes for the biosynthesis of adenosyl-cobalamin (vitamin B12), a cofactor required for the use of propanediol. These operons are transcribed divergently from distinct promoters separated by several kilobases. The regulation of the two operons is tightly integrated in that both require the pos...
متن کاملCharacterization of defensin resistance phenotypes associated with mutations in the phoP virulence regulon of Salmonella typhimurium.
The defensin sensitivities of Salmonella typhimurium strains with mutations in the phoP/phoQ two-component virulence regulon were tested by using purified defensins NP-1 and NP-2. Strains with mutations in either gene of the regulatory pair (phoP [transcriptional activator] or phoQ [membrane sensor kinase]) had increased sensitivities to defensin. The predicted periplasmic domain of the PhoQ pr...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1986
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.166.2.666-669.1986