Part:BBa_K4129002

Promoter of the Aspergillus niger FDH gene

The part consists of the 1000 bp upstream of Formate Dehydrogenase (FDH) CDS from Aspergillus niger. Since FDH genes have been shown to be upregulated in response to furfural in Saccharomyces cerevisiae, the part was utilised to test if anFDH promoter is also responsive to furfural. Quantification by qPCR of the FDH transcript and mCherry transcript from a transiently expressed BBa_K4129005 (BBa_K4129002 regulating mCherry reporter), showed that BBa_K4129002 is induced by furfural both in its native regulatory enviroment (Fig. 1 A) and when used in syntetic expression cassettes (Fig 1 B). The promoter shows a considerable dynamic range in response to furfural, making it ideal for enginnering biosensors. To our knowledge, such a biosensor would be the first furfural biosensor ever built.

Figure 1: Investigation of anFDH promoter activity in response to furfural. The plots show the mRNA levels relative to actin mRNA of FDH (A) and mCherry transiently expressed from BBa_K4129005 (B) as measured by qPCR.

Sequence and Features

Assembly Compatibility:

• 10
  INCOMPATIBLE WITH RFC[10]

  Illegal SpeI site found at 34
  Illegal SpeI site found at 160
  
• 12
  INCOMPATIBLE WITH RFC[12]

  Illegal SpeI site found at 34
  Illegal SpeI site found at 160
  
• 21
  COMPATIBLE WITH RFC[21]
• 23
  INCOMPATIBLE WITH RFC[23]

  Illegal SpeI site found at 34
  Illegal SpeI site found at 160
  
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal SpeI site found at 34
  Illegal SpeI site found at 160
  
• 1000
  INCOMPATIBLE WITH RFC[1000]

  Illegal BsaI site found at 564
  Illegal BsaI site found at 929