PMID:350847: Difference between revisions
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| | !align=left |Citation | ||
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'''No author listed''' (1978) Electron microscope heteroduplex studies of sequence relations among plasmids of Escherichia coli: structure of F100, F152, and F8 and mapping of the Escherichia coli chromosomal region fep-supE-gal-attlambda-uvrB. ''J. Bacteriol.'' '''134''':778-94 | |||
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| | !align=left |Abstract | ||
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The genetic and physical structures of commonly used F-prime factors carrying the galactose region of the Escherichia coli chromosome were analyzed. Deletions in the chromosomal DNA sequences in the F-prime factors were found to be frequent events. A genetic method was developed to reconstruct the original F-prime factors from deletion variants. Heteroduplex analysis of the reconstructed F-prime factors confirmed the derivation of the F-prime factors F100 and F152, from the same Hfr, and finally determined the normal E. coli chromosomal sequence in the region between fep and uvrB, containing about 5 min in genetic units and about 246.5 in kilobase units (kb). This sequence could be connected with the DNA sequences of the lac-purE region, which had been physically determined previously. Together they constituted a total of 528.6 kb. From these combined sequences, the distance from lacPO to galK was calculated to be 412.9 kb, which corresponds to 8.8 min in genetic units. | |||
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[http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=350847 PubMed] [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC222324 PMC222324] | |||
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!align=left |Keywords | |||
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Chromosome Mapping; Chromosomes, Bacterial; DNA, Bacterial/analysis; DNA, Bacterial/genetics; Escherichia coli/genetics; Escherichia coli/ultrastructure; F Factor; Microscopy, Electron; Molecular Weight | |||
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==Significance {{HelpIcon|Help:Literature}} == | ==Significance {{HelpIcon|Help:Literature}} == | ||
{{LitSignificance}} | {{LitSignificance}} | ||
Revision as of 19:25, 1 September 2013
| Citation |
No author listed (1978) Electron microscope heteroduplex studies of sequence relations among plasmids of Escherichia coli: structure of F100, F152, and F8 and mapping of the Escherichia coli chromosomal region fep-supE-gal-attlambda-uvrB. J. Bacteriol. 134:778-94 |
|---|---|
| Abstract |
The genetic and physical structures of commonly used F-prime factors carrying the galactose region of the Escherichia coli chromosome were analyzed. Deletions in the chromosomal DNA sequences in the F-prime factors were found to be frequent events. A genetic method was developed to reconstruct the original F-prime factors from deletion variants. Heteroduplex analysis of the reconstructed F-prime factors confirmed the derivation of the F-prime factors F100 and F152, from the same Hfr, and finally determined the normal E. coli chromosomal sequence in the region between fep and uvrB, containing about 5 min in genetic units and about 246.5 in kilobase units (kb). This sequence could be connected with the DNA sequences of the lac-purE region, which had been physically determined previously. Together they constituted a total of 528.6 kb. From these combined sequences, the distance from lacPO to galK was calculated to be 412.9 kb, which corresponds to 8.8 min in genetic units. |
| Links | |
| Keywords |
Chromosome Mapping; Chromosomes, Bacterial; DNA, Bacterial/analysis; DNA, Bacterial/genetics; Escherichia coli/genetics; Escherichia coli/ultrastructure; F Factor; Microscopy, Electron; Molecular Weight |
| edit table |
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