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Gene organization in the distal part of the Salmonella typhimurium histidine operon and determination and sequence of the operon transcription terminator



Gene organization in the distal part of the Salmonella typhimurium histidine operon and determination and sequence of the operon transcription terminator



Molecular and General Genetics 191(3): 413-420



Several transducing phages, carrying different deletions of the Salmonella typhimurium histidine operon were constructed and mapped. These phages were used to obtain fragments of DNA comprising different regions of the operon, which were subcloned in plasmid vectors. The recombinant plasmids allowed the construction of a physical and restriction map of the histidine operon. The presence of the different genes on individual fragments was confirmed by complementation tests. The transcription termination site of the histidine operon has been established by S1 mapping and sequence analysis. The entire operon measures about 7100 base pairs and the last six structural genes are contained in 3450 bases of genetic materials.

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Accession: 043183245

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PMID: 6314092


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