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- W1575807516 abstract "We have investigated the major Escherichia coli histone-like proteins (H-NS, HU, FIS, and IHF) as putative factors involved in the maintenance of the overall DNA looped arrangement of the bacterial nucleoid. The long-range architecture of the chromosome has been studied by means of an assay based on in vivo genomic fragmentation mediated by endogenous DNA gyrase in the presence of oxolinic acid. The fragmentation products were analysed by CHEF electrophoresis. The results indicate that in vivo a large fraction of the bacterial chromatin constitutes an adequate substrate for the enzyme. DNA fragments released upon oxo-treatment span a size range from about 1000 kb to a limit-size of about 50 kb. The latter value is in excellent agreement with the average size reported for bacterial chromosomal domains. The DNA gyrase-mediated fragmentation does not appear to be significantly altered in strains depleted in histone-like proteins as compared to an E. coli wild type strain. This suggests that these proteins may not represent critical determinants for the maintenance of the supercoiled loop organisation of the E. coli chromosome." @default.
- W1575807516 created "2016-06-24" @default.
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- W1575807516 date "2001-09-01" @default.
- W1575807516 modified "2023-09-26" @default.
- W1575807516 title "The looped domain organization of the nucleoid in histone-like protein defective Escherichia coli strains***This work is dedicated to Maurice Hofnung, tragically deceased on June 28th, 2001." @default.
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- W1575807516 doi "https://doi.org/10.1016/s0300-9084(01)01331-1" @default.
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