Difference between revisions of "Part:BBa K2507004"

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==Usage and Biology==
 
==Usage and Biology==
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E.coli codon optimized ThsS(BBa_K2507000) and ThsR(BBa_K2507001) are two basic parts which belong to the two-component system from marine Shewanella halifaxensis. ThsS is the membrane-bound sensor kinase (SK) which can sense thiosulfate outside the cell and ThsR is the DNA-binding response regulator(RR). PphsA(BBa_K2507018) is a ThsR activated promoter when ThsR is phosphorylated by ThsS after ThsS sensing thiosulfate.
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<p>
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Because of thiosulfate is an indicator of gut inflammation (Levitt et al, 1999; Jackson et al, 2012; Vitvitsky et al, 2015), this system can be used as a sensor of gut inflammation.  
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ThsS (BBa_K2507000) and ThsR (BBa_K2507001), both codon-optimized for <i>E. coli</i>, are two basic parts which belong to the two-component system from the marine bacterium <i>Shewanella halifaxensis</i>. ThsS is the membrane-bound sensor kinase (SK) which can sense thiosulfate outside the cell, and ThsR is the DNA-binding response regulator(RR). PphsA(BBa_K2507018) is a ThsR-activated promoter which is turned on when ThsR is phosphorylated by ThsS after ThsS senses thiosulfate.
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</p>
 +
<p>
 +
Because thiosulfate is an indicator of intestinal inflammation (Levitt et al, 1999; Jackson et al, 2012; Vitvitsky et al, 2015), this system can be used as a sensor for intestinal inflammation.  
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</p>
 
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===Usage and Biology===
 
===Usage and Biology===
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<span class='h3bb'>Sequence and Features</span>
 
<span class='h3bb'>Sequence and Features</span>
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==Characterization==
 
==Characterization==
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After validating the system in the laboratory strains <i>Escherichia coli</i> Top10 and <i>E. coli</i> Nissle 1917, we confirmed that the system indeed works as a thiosulfate sensor, as intended. By linking <i>thsR</i> with <i>sfgfp</i> (BBa_K2507008), chromoprotein genes (BBa_K2507009, BBa_K2507010, BBa_K2507011) or the violacein producing operon vioABDE (BBa_K2507012), this system can respond to thiosulfate by producing a signal visible to the naked eye, either under normal or UV light, such as sfGFP, chromoproteins (spisPink-pink chromoprotein, gfasPurple-purple chromoprotein, amilCP-blue chromoprotein) or a dark-green small-molecule pigment (protoviolaceinic acid).
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Check the links below to learn about the details of the results:
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https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507008
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https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507009
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https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507010
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https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507011
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https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507012
  
 
==Reference==
 
==Reference==
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<p>
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Daeffler, K. N., Galley, J. D., Sheth, R. U., Ortiz‐Velez, L. C., Bibb, C. O., & Shroyer, N. F., et al. (2017). Engineering bacterial thiosulfate and tetrathionate sensors for detecting gut inflammation. Molecular Systems Biology, 13(4), 923.
 +
</p>
 +
<p>
 +
Jackson MR, Melideo SL, Jorns MS (2012) Human sulfide: quinone oxidoreductase catalyzes the first step in hydrogen sulfide metabolism and produces a sulfane sulfur metabolite. Biochemistry 51: 6804 – 6815
 +
</p>
 +
<p>
 +
Levitt MD, Furne J, Springfield J, Suarez F, DeMaster E (1999) Detoxification of hydrogen sulfide and methanethiol in the cecal mucosa. J Clin Invest 104: 1107 – 1114
 +
</p>
 +
<p>
 +
Schmidl SR, Sheth RU, Wu A, Tabor JJ (2014) Refactoring and optimization of light-switchable Escherichia coli two-component systems. ACS Synth Biol 3: 820 – 831
 +
</p>
 +
<p>
 +
Vitvitsky V, Yadav PK, Kurthen A, Banerjee R (2015) Sulfide oxidation by a noncanonical pathway in red blood cells generates thiosulfate and polysulfides. J Biol Chem 290: 8310 – 8320
 +
</p>
  
 
<!-- Uncomment this to enable Functional Parameter display  
 
<!-- Uncomment this to enable Functional Parameter display  

Latest revision as of 13:51, 1 November 2017


J23104-thsS

Usage and Biology

ThsS (BBa_K2507000) and ThsR (BBa_K2507001), both codon-optimized for E. coli, are two basic parts which belong to the two-component system from the marine bacterium Shewanella halifaxensis. ThsS is the membrane-bound sensor kinase (SK) which can sense thiosulfate outside the cell, and ThsR is the DNA-binding response regulator(RR). PphsA(BBa_K2507018) is a ThsR-activated promoter which is turned on when ThsR is phosphorylated by ThsS after ThsS senses thiosulfate.

Because thiosulfate is an indicator of intestinal inflammation (Levitt et al, 1999; Jackson et al, 2012; Vitvitsky et al, 2015), this system can be used as a sensor for intestinal inflammation.


Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 11
    Illegal NheI site found at 34
    Illegal NheI site found at 1150
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal BamHI site found at 549
    Illegal BamHI site found at 597
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal SapI site found at 1082

Characterization

After validating the system in the laboratory strains Escherichia coli Top10 and E. coli Nissle 1917, we confirmed that the system indeed works as a thiosulfate sensor, as intended. By linking thsR with sfgfp (BBa_K2507008), chromoprotein genes (BBa_K2507009, BBa_K2507010, BBa_K2507011) or the violacein producing operon vioABDE (BBa_K2507012), this system can respond to thiosulfate by producing a signal visible to the naked eye, either under normal or UV light, such as sfGFP, chromoproteins (spisPink-pink chromoprotein, gfasPurple-purple chromoprotein, amilCP-blue chromoprotein) or a dark-green small-molecule pigment (protoviolaceinic acid).


Check the links below to learn about the details of the results:

https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507008

https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507009

https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507010

https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507011

https://parts.igem.org/wiki/index.php?title=Part:BBa_K2507012

Reference

Daeffler, K. N., Galley, J. D., Sheth, R. U., Ortiz‐Velez, L. C., Bibb, C. O., & Shroyer, N. F., et al. (2017). Engineering bacterial thiosulfate and tetrathionate sensors for detecting gut inflammation. Molecular Systems Biology, 13(4), 923.

Jackson MR, Melideo SL, Jorns MS (2012) Human sulfide: quinone oxidoreductase catalyzes the first step in hydrogen sulfide metabolism and produces a sulfane sulfur metabolite. Biochemistry 51: 6804 – 6815

Levitt MD, Furne J, Springfield J, Suarez F, DeMaster E (1999) Detoxification of hydrogen sulfide and methanethiol in the cecal mucosa. J Clin Invest 104: 1107 – 1114

Schmidl SR, Sheth RU, Wu A, Tabor JJ (2014) Refactoring and optimization of light-switchable Escherichia coli two-component systems. ACS Synth Biol 3: 820 – 831

Vitvitsky V, Yadav PK, Kurthen A, Banerjee R (2015) Sulfide oxidation by a noncanonical pathway in red blood cells generates thiosulfate and polysulfides. J Biol Chem 290: 8310 – 8320