Part:BBa_K389016:Design

VirA/G reporter device mRFP

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  INCOMPATIBLE WITH RFC[12]

  Illegal NheI site found at 7
  Illegal NheI site found at 30
  Illegal NheI site found at 647
  Illegal NheI site found at 2581
  Illegal NheI site found at 2604
  
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal BglII site found at 1632
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal AgeI site found at 4260
  Illegal AgeI site found at 4372
  
• 1000
  INCOMPATIBLE WITH RFC[1000]

  Illegal SapI.rc site found at 1768
  

Design Notes

• The virA gene is under the control a medium strong constitutive promoter so there is enough VirA receptor expressed but not too much so the cell suffers from the expression (VirA is a membrane protein)

• The virG gene is mutated so it works without an rpoA subunit from Agrobacterium tumefaciens ([http://www.springerlink.com/content/wmq06kua5qkma1au/ YC Jung et al., 2004])

• Double terminator (forward) to keep expression of mRFP by the constitutive promoter low.
  • Double terminator BBa_B0017 instead of BBa_B0015 because of problems mentioned with BBa_B0012.

• mRFP gene to show the activity of the vir promoter.

• This BioBrick is for measuring the natural VirA/G system.

Source

• virA from A. tumefaciens C58 (BBa_K389001)

• virG gene synthesized by Mr. Gene (BBa_K389002)

• vir promoter from A. tumefaciens C58 (BBa_K389003)

• Constitutive promoter, RBS, double terminator and mRFP from parts.igem (BBa_J23110, BBa_B0034, BBa_B0017, BBa_E1010)

References

YC Jung et al. (2004) [http://www.springerlink.com/content/wmq06kua5qkma1au/ Mutants of Agrobacterium tumefaciens virG Gene That Activate Transcription of vir Promoter in Escherichia coli], Current Microbiol 49:334-340.