Genes aroA and serC of Salmonella typhimurium constitute an operon
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چکیده
منابع مشابه
Comparison of abilities of Salmonella enterica serovar typhimurium aroA aroD and aroA htrA mutants to act as live vectors.
We compared the ability of Salmonella enterica serovar Typhimurium SL1344 aroA aroD (BRD509) and aroA htrA (BRD807) mutants to act as live vectors for delivery of fragment C of tetanus toxin (FrgC). FrgC was expressed in these strains from either pTETnir15 or pTEThtrA1. BRD509FrgC(+) strains elicited approximately 2-log-higher serum anti-FrgC antibody titers than BRD807FrgC(+) strains. All mice...
متن کاملRegulatory mutants of the tryptophan operon of Salmonella typhimurium.
HE tryptophan ( t rp) operon of Salmonella typhimurium consists of five Tstructural genes regulated as a unit by tryptophan (BLUME and BALBINDER 1966; BAUERLE and MARGOLIN 1966a, 196613; BLUME, WEBER and BALBINDER 1968). The biosynthetic reactions involved and the order of the genes (see Figure 1 ), as well as the regulation of the trp operon have been shown to be identical in Escherichia coli ...
متن کاملInternal promoter P2 of the histidine operon of Salmonella typhimurium.
The histidine operon internal promoter P2 allows initiation of transcription at a rate up to one-third that of the wild-type his operon.
متن کاملMutational analysis of the histidine operon promoter of Salmonella typhimurium.
We isolated a collection of 67 independent, spontaneous Salmonella typhimurium his operon promoter mutants with decreased his expression. The mutants were isolated by selecting for resistance to the toxic lactose analog o-nitrophenyl-beta-D-thiogalactoside in a his-lac fusion strain. The collection included base pair substitutions. small insertions, a deletion, and one large insertion identifie...
متن کاملOperator constitutive mutations in the leucine operon of Salmonella typhimurium.
N a previous communication (CALVO, FREUNDLICH and UMBARGER 1969), a I group of Salmonella typhimurium mutants was described as having the following properties. They were resistant to an analog of leucine, 5’,5’,5’-trifluoroDL-leucine (RENNERT and ANKER 1963), excreted leucine, had constitutive and derepressed levels of enzymes involved in leucine biosynthesis, and they had mutant sites linked t...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1985
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.163.1.355-361.1985