Part:BBa_K352002

pCooF Promoter from Rhodospirillum rubrum

CooA is a CO-sensing protein that activates the transcription of genes encoding the CO-oxidation (coo) regulon, whose polypeptide products are required for utilizing CO as an energy source in Rhodospirillum rubrum. CooA binds to a position overlapping the -35 element of the P(cooF) promoter, similar to the arrangement of class II CRP (cAMP receptor protein)- and FNR (fumarate and nitrate reductase activator protein)-dependent promoters when expressed in Escherichia coli.

The CO-dependent anaerobic growth of Rhodospirillum rubrum relies on a CO oxidation system encoded by two CO regulated transcriptional units, cooMKLXUH and cooFSCTJ. The key products of the coo regulon are an O2- sensitive CO dehydrogenase (CooS), a CooS-associated Fe-S protein (CooF), and a CO-tolerant hydrogenase (CooH), and the expression of the genes depends upon the activity of the CooA protein, which senses CO under anaerobic conditions.

CO-independent basal level transcription of PcooF is not detectable due to the absence of active CooA.

Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]