Locus determining normal colony formation on the chromosome of Escherichia coli K-12
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چکیده
منابع مشابه
New locus for exopolysaccharide overproduction in Escherichia coli K-12.
A new locus for exopolysaccharide overproduction in Escherichia coli K-12 was mapped by insertion mutagenesis. A 66% linkage to serA, which is located at 62 min on the E. coli K-12 linkage map, was shown by P1 transduction. The polysaccharide produced by the mutant was isolated and was shown to be similar to colanic acid.
متن کاملIdentification of a copper-responsive two-component system on the chromosome of Escherichia coli K-12.
Using a genetic screen we have identified two chromosomal genes, cusRS (ylcA ybcZ), from Escherichia coli K-12 that encode a two-component, signal transduction system that is responsive to copper ions. This regulatory system is required for copper-induced expression of pcoE, a plasmid-borne gene from the E. coli copper resistance operon pco. The closest homologs of CusR and CusS are plasmid-bor...
متن کاملHfr Strains of Escherichia coli K-12
Since the first reports by Cavalli-Sforza (9) and Hayes (24) of strains of Escherichia coli K-12 which are conjugational donors of chromosomal markers at high frequency (Hfr strains), many other Hfr strains have been isolated and our understanding of the mechanisms involved in Hfr formation has increased considerably. All Hfr strains arise from the integration of a conjugative plasmid into the ...
متن کاملThe DNA sequence of the sulfate activation locus from Escherichia coli K-12.
The DNA sequence of the sulfate activation locus from Escherichia coli K-12 has been determined. The sequence includes the structural genes encoding the enzymes ATP sulfurylase (cysD and cysN) and APS kinase (cysC) which catalyze the synthesis of activated sulfate. These are the only genes known to reside in the sulfate activation operon. Consensus elements of the operon promoter were identifie...
متن کاملPhosphoglucomutase mutants of Escherichia coli K-12.
Bacteria with strongly depressed phosphoglucomutase (EC 2.7.5.1) activity are found among the mutants of Escherichia coli which, when grown on maltose, accumulate sufficient amylose to be detectable by iodine staining. These pgm mutants grow poorly on galactose but also accumulate amylose on this carbon source. Growth on lactose does not produce high amylose but, instead, results in the inducti...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1967
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.94.4.1268-1269.1967