Literature DB >> 17965164

Substitutions at auxiliary operator O3 enhance repression by nitrate-responsive regulator NarL at synthetic lac control regions in Escherichia coli K-12.

Valley Stewart1, Peggy J Bledsoe.   

Abstract

We constructed monocopy lac operon control regions in which the operators O1-lac and O3-lac were replaced by NarL and NarP binding sites from the nirB or napF operon control regions. The results support the hypothesis that DNA-bound dimers of phospho-NarL can participate in higher-order cooperative interactions.

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Year:  2007        PMID： 17965164      PMCID： PMC2223736          DOI： 10.1128/JB.01431-07

Source DB:  PubMed          Journal:  J Bacteriol        ISSN： 0021-9193            Impact factor:   3.490


  44 in total

1.  Synthetic lac operator substitutions for studying the nitrate- and nitrite-responsive NarX-NarL and NarQ-NarP two-component regulatory systems of Escherichia coli K-12.

Authors:  Valley Stewart; Peggy J Bledsoe
Journal:  J Bacteriol       Date:  2003-04       Impact factor: 3.490

2.  DNA-binding properties of a lac repressor mutant incapable of forming tetramers.

Authors:  M Brenowitz; N Mandal; A Pickar; E Jamison; S Adhya
Journal:  J Biol Chem       Date:  1991-01-15       Impact factor: 5.157

3.  DNA looping in cellular repression of transcription of the galactose operon.

Authors:  N Mandal; W Su; R Haber; S Adhya; H Echols
Journal:  Genes Dev       Date:  1990-03       Impact factor: 11.361

4.  Probing co-operative DNA-binding in vivo. The lac O1:O3 interaction.

Authors:  S Sasse-Dwight; J D Gralla
Journal:  J Mol Biol       Date:  1988-07-05       Impact factor: 5.469

5.  Influence of supercoiling and sequence context on operator DNA binding with lac repressor.

Authors:  P A Whitson; W T Hsieh; R D Wells; K S Matthews
Journal:  J Biol Chem       Date:  1987-10-25       Impact factor: 5.157

6.  The three operators of the lac operon cooperate in repression.

Authors:  S Oehler; E R Eismann; H Krämer; B Müller-Hill
Journal:  EMBO J       Date:  1990-04       Impact factor: 11.598

7.  lac repressor forms stable loops in vitro with supercoiled wild-type lac DNA containing all three natural lac operators.

Authors:  E R Eismann; B Müller-Hill
Journal:  J Mol Biol       Date:  1990-06-20       Impact factor: 5.469

8.  Identification and expression of genes narL and narX of the nar (nitrate reductase) locus in Escherichia coli K-12.

Authors:  V Stewart; J Parales
Journal:  J Bacteriol       Date:  1988-04       Impact factor: 3.490

9.  DNA supercoiling changes the spacing requirement of two lac operators for DNA loop formation with lac repressor.

Authors:  H Krämer; M Amouyal; A Nordheim; B Müller-Hill
Journal:  EMBO J       Date:  1988-02       Impact factor: 11.598

10.  lac repressor forms loops with linear DNA carrying two suitably spaced lac operators.

Authors:  H Krämer; M Niemöller; M Amouyal; B Revet; B von Wilcken-Bergmann; B Müller-Hill
Journal:  EMBO J       Date:  1987-05       Impact factor: 11.598
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  1 in total

1.  Functional roles for the GerE-family carboxyl-terminal domains of nitrate response regulators NarL and NarP of Escherichia coli K-12.

Authors:  Alice V Lin; Valley Stewart
Journal:  Microbiology (Reading)       Date:  2010-07-15       Impact factor: 2.777
  1 in total

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