Mapping of ilvO loci of Escherichia coli K-12 with bacteriophage lambda dilv
نویسندگان
چکیده
منابع مشابه
Lipopolysaccharide-deficient, bacteriophage-resistant mutants of Escherichia coli K-12.
Bacteriophage-resistant mutants isolated and classified in a previous study were examined for alterations in their lipopolysaccharide (LPS) composition, and properties likely to be affected by alterations in LPS composition were studied. It was found that many of the mutants of the Ktw (K2-resistance), Ttk (T2, T4, or K19 resistance), Bar (bacteriophage), Wrm (wide-range mutants), and miscellan...
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on expression of the Xrex+ gene, since little inhibition was observed following infection by a Xrex mutant or by a hybrid bacteriophage Xii44 which lacks a functional rex gene. For promotion of the synthesis of rex product, cII+ and N+ genes are required and can act trans, whereas cY+, also required, must be cis to a rex+ gene. These genes presumably play a role in the transcription of the cd-r...
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A factor which inactivates the phage lambda can be extracted from Escherichia coli. This factor is a protein and is located in the outer membrane of the bacterial envelope. It is found in extracts of strains which are sensitive to phage lambda, but not in extracts of strains specifically resistant to this phage. We conclude that this factor is the lambda receptor, responsible for the specific a...
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متن کاملIsolation and heteroduplex mapping of a lambda transducing bacteriophage carrying the structural genes for carbamoylphosphate synthase: regulation of enzyme synthesis in Escherichia coli K-12 lysogens.
A N-lambda bacteriophage transducing the structural genes for Escherichia coli K-12 carbamoylphosphate synthase (glutamine) (CPSase; EC 2.7.2.9) has been isolated and analyzed both genetically and physically. The whole int-N region is substituted for a short chromosomal segment corresponding almost exactly to the car locus. The study of CPSase, ornithine carbamoyltransferase, and aspartate carb...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1979
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.137.3.1234-1242.1979