Design of cAMP-CRP-activated promoters in Escherichia coli.

P. Valentin-Hansen, B. Holst, L. Søgaard-Andersen, Jan Martinussen, J. Nesvera, S. R. Douthwaite

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We have studied the deoP2 promoter of Escherichia coli to define features that are required for optimal activation by the complex of adenosine 3',5' monophosphate (cAMP) and the cAMP receptor protein (CRP). Systematic mutagenesis of deoP2 shows that the distance between the CRP site and the -10 hexamer is the crucial factor in determining whether the promoter is activated by cAMP-CRP. Based on these observations, we propose that cAMP-CRP-activated promoters can be created by correctly aligning a CRP target and a -10 hexamer. This idea has been successfully tested by converting both a CRP-independent promoter and a sequence resembling the consensus -10 hexamer to strongly cAMP-CRP-activated promoters.
Original languageEnglish
JournalMolecular Microbiology
Volume5
Issue number2
Pages (from-to)433-437
Number of pages5
ISSN0950-382X
DOIs
Publication statusPublished - 1991
Externally publishedYes

Keywords

  • Base Sequence
  • Cyclic AMP
  • DNA, Bacterial
  • Escherichia coli
  • Gene Expression Regulation, Bacterial
  • Molecular Sequence Data
  • Mutagenesis
  • Promoter Regions, Genetic
  • Receptors, Cyclic AMP
  • E0399OZS9N Cyclic AMP

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