high levels of Carbon monoxide detection
pCooM:it comes from the CooA transcription factor from Rhospirillum rubrum RBS: ribosome binding site Pink chromoprotein: LuxR: a part of the quorum sensing system Terminator: an RNA sequence that usually occ
pCooM promoter is regulated by CooA when there are high levels of carbon monoxide in the environment, when this promoter is activated a pink chromoprotein and a LuxR promoter will be transcribed. The expression of LuxR is going to bind to the AHL molecule that allows the transcription of the plux promoter (BBa_K2115002)
Adding LuxR to later activate pLux and then activating the third level of carbon monoxide detection.
RBS (Elowitz 1999) -- defines RBS efficiency
Varies from -6 to +1 region from original sequence to accomodate BioBricks suffix. No secondary structures are formed in the given RBS region. Users should check for secondary structures induced in the RBS by upstream and downstream elements in the +50 to -50 region, as such structures will greatly affect the strength of the RBS. Contact info for this part: Brian Chow
Vinay S Mahajan, Voichita D. Marinescu, Brian Chow, Alexander D Wissner-Gross and Peter Carr IAP, 2003.
Derived from the TE terminator of T7 bacteriophage between Genes 1.3 and 1.4 <genbank>V01146</genbank>.
Transcription terminator for the E.coli RNA polymerase.
Suggested by Sri Kosuri and Drew Endy as a high efficiency terminator. The 5' end cutoff was placed immediately after the TAA stop codon and the 3' end cutoff was placed just prior to the RBS of Gene 1.4 (before AAGGAG). Use anywhere transcription should be stopped when the gene of interest is upstream of this terminator.
Transcriptional terminator consisting of a 64 bp stem-loop.
V. fischeri <genbank>AF170104</genbank>
In complex with HSL, LuxR binds to the Lux promoter, activating transcription from Pr <bb_part>BBa_R0062</bb_part>, and repressing transcription from Pl <bb_part>BBa_R0063</bb_part>. The lux cassette of V. fischeri contains a left and a right promoter. The right promoter gives weak constitutive expression of downstream genes.This expression is up-regulated by the action of the Lux activator, LuxR complexed to HSL. Two molecules of LuxR protein form a complex with two molecules the signalling compound homoserine lactone (HSL). This complex binds to a palindromic site on the promoter, increasing the rate of transcription.
2 silent point mutants were introduced in the coding sequence to remove internal XbaI and PstI sites. Mutation sites were chosen to replace codons commonly used in E. coli with codons used at a similar frequency.
Vinay S Mahajan, Voichita D. Marinescu, Brian Chow, Alexander D Wissner-Gross and Peter Carr
pCooM Promoter from Rhodospirillum rubrum
Y. He, T. Gaal, R. Karls, T. Donohue, R. Gourse and G.P. Roberts, J. Biol. Chem. 274 (1999), pp. 10840???10846.
The two CooA-regulated R. rubrum promoters, PcooF and PcooM, contain 2-fold symmetric DNA sequences that serve as CooA-binding sites and are similar to the CRP consensus sequence. This is consistent with the similarity between CooA and CRP in their helix-turn-helix motifs. The CooA binding sites lie at the 243.5 and 238.5 positions relative to the transcription start sites in PcooF and PcooM, respectively, overlapping with the 235 region. This overlap suggests that both CooA-regulated promoters are analogous to class II CRP-dependent promoters. We chose PcooF for this study because it is the stronger promoter based on the amount of primer extension product and level of coo-encoded proteins synthesized in vivo. 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.
The sequence information was acquired from NCBI and physical DNA was synthesized from GENEART. Classical cloning strategies(restriction digestion) were used to produce biobricks.
This chromoprotein eforRed naturally exhibits red color when expressed. The color is weaker than RFP, however. On agar plates and in liquid culture, the color is readily visible to naked eye in less than 24 hours of incubation. The DNA was codon-optimized for expression in E.coli and synthesized by the Korean company Bioneer Corporation.
Conversion of the iGEM parts registry to SBOL2.1