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    Sancar, Aziz and Rupp, W.Dean 1979. Cloning of uvrA, lexC and ssb genes of Escherichia coli. Biochemical and Biophysical Research Communications, Vol. 90, Issue. 1, p. 123.


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The dominance of exrB over exrB+ in heterodiploids of Escherichia coli*

  • Joseph Greenberg (a1), John Donch (a1) and Leonard Berends (a1)
  • DOI: http://dx.doi.org/10.1017/S001667230001541X
  • Published online: 01 April 2009
Abstract
SUMMARY

To test whether exrB, a mutation in Escherichia coli B making this strain sensitive to ultraviolet radiation and unable to divide normally, is dominant to exrB+, merodiploids were constructed by crossing Hfr exrB metA+his × FmalB met A thr proA recA. metA+recombinants were fertile (F′) and sensitive to UV. One of these, F′ exrB proA, was crossed with an FmetA malB thr, selecting for metA+proA+. All such progeny acquiring malB+ were UV-sensitive, fertile and segregated met mal UV-resistant progeny. They were, therefore, meriodiploids, F′ exrB/exrB+. exrB is dominant to exrB+, in which respect it resembles exrA (lex).

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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

J. Donch & J. Greenberg (1968 b). Genetic analysis of lon mutants of strain K-12 of Escherichia coli. Molecular general Genetics 103, 105115.

J. Donch & J. Greenberg (1974). The effect of lex on UV sensitivity, filament formation and λ induction in lon mutants of Escherichia coli. Molecular general Genetics 128, 277281.

N. B. Ingels , G. T. Daughters & A. Burzio (1968). New design for an automated bacterial colony counter. Review of Scientific Instruments 39, 115119.

B. Low (1968). Formation of merodiploids in matings with a class of rec− recipient strains of Escherichia coli K12. Proceedings of the National Academy of Sciences, Washington60, 160167.

J. A. Wechsler & J. D. Gross (1971). Escherichia coli mutants temperature-sensitive for DNA synthesis. Molecular general Genetics 113, 273284.

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Genetics Research
  • ISSN: 0016-6723
  • EISSN: 1469-5073
  • URL: /core/journals/genetics-research
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