Regulatory
pBAD

Part:BBa_K206000

Designed by: Amelia Hardjasa   Group: iGEM09_British_Columbia   (2009-10-14)
Revision as of 19:55, 21 October 2009 by Ahardjasa (Talk | contribs)


Name: pBAD strong
Input: [http://openwetware.org/wiki/Arabinose L-arabinose]
Output: PoPS

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Usage and Biology

pBAD is an E.coli promoter that is induced by L-arabinose. In the absence of arabinose, the repressor protein AraC (BBa_I13458) binds to the AraI1 operator site of pBAD and the upstream operator site AraO2, blocking transcription (see Reference 1). In the presence of arabinose, AraC binds to it and changes its conformation such that it interacts with the AraI1 and AraI2 operator sites, permitting transcription (Reference 1).

K206000 is a pBAD promoter with a variant AraI1 site that has been shown to be responsive to lower concentrations of arabinose than the wild type (BBa_I13453); additionally, it exhibits a higher maximum of protein expression, as measured by coupling to a fluorescent reporter.

What


Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 125
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal BamHI site found at 65
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]


References

[http://www.ncbi.nlm.nih.gov/pubmed/8980677 [1]] Niland P, Hühne R, Müller-Hill B. (1996). How AraC Interacts Specifically with its Target DNAs. J. Mol. Biol. 264:667-674.


[edit]
Categories
//chassis/prokaryote/ecoli
//direction/forward
//promoter
//regulation/positive
//rnap/prokaryote/ecoli/sigma70
Parameters
familypBAD promoter
positive_regulators1