Difference between revisions of "Part:BBa K2315011"

(Orthogonality test against non-cognate inducers)
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Group: <b>Shanghaitech iGEM 2017</b>
 
Group: <b>Shanghaitech iGEM 2017</b>
  
HSL receiver from P.aeruginosa, actives expression of GFP protein in response to 3OC12HSL.  
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The HSL receiver LasR from P.aeruginosa activates expression of GFP protein in response to 3OC12HSL.  
  
This part is one of the interchangeable AHL receivers. Full collection could be viewed at:
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This Receiver can be easily replaced by other AHL receivers in our collection. A full collection could be found in: (link tobe added!!!!!!!!)
  
 
==<b>Introduction</b>==
 
==<b>Introduction</b>==
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(Figure1-mechanism to be added)
 
(Figure1-mechanism to be added)
  
When proper AHL added with concentration higher than a critical value, The constitutively expressed LasR will bind the signaling AHL molecule, dimerize and bind to pLas regulatory sequence before GFP gene and actives its expression.
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When AHL is added with concentration higher than a critical value, the constitutively expressed LasR will bind to the AHL molecule 3OC12HSL, dimerize and bind to the pLas regulatory sequence to activate GFP expression.
  
  
 
==<b>Fluorescent Response to cognate 3OC12-HSL</b>==
 
==<b>Fluorescent Response to cognate 3OC12-HSL</b>==
To validate the part's design, we've used standard 3OC12HSL (HSL produced by LasI in P.aeruginosa) sample to determine the response curve of this part.
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To test this part, we used standard 3OC12HSL (HSL produced by LasI in P.aeruginosa) to determine the response curve.  
  
 
(Figure2&3-response to 3OC12HSL to be added)
 
(Figure2&3-response to 3OC12HSL to be added)
  
 
==Orthogonality test against non-cognate inducers==
 
==Orthogonality test against non-cognate inducers==
We've characterized the crosstalk between LasR and non-cognate AHLs
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We have characterized crosstalk response of LasR to several non-cognate AHLs
 
(Figure4-7-response to non-cognate inducers to be added)
 
(Figure4-7-response to non-cognate inducers to be added)
  

Revision as of 14:18, 30 October 2017

LasR-GFP

Group: Shanghaitech iGEM 2017

The HSL receiver LasR from P.aeruginosa activates expression of GFP protein in response to 3OC12HSL.

This Receiver can be easily replaced by other AHL receivers in our collection. A full collection could be found in: (link tobe added!!!!!!!!)

Introduction

(Figure1-mechanism to be added)

When AHL is added with concentration higher than a critical value, the constitutively expressed LasR will bind to the AHL molecule 3OC12HSL, dimerize and bind to the pLas regulatory sequence to activate GFP expression.


Fluorescent Response to cognate 3OC12-HSL

To test this part, we used standard 3OC12HSL (HSL produced by LasI in P.aeruginosa) to determine the response curve.

(Figure2&3-response to 3OC12HSL to be added)

Orthogonality test against non-cognate inducers

We have characterized crosstalk response of LasR to several non-cognate AHLs (Figure4-7-response to non-cognate inducers to be added)

Usage: Measuring unknown AHL production

We developed a measurement protocol using the fluorescent protein coupled AHL receiver germs to measure the actual AHLs concentration in high precision and sensitivity in compared with LC-MS.


LasR-pLas-GFP Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 7
    Illegal NheI site found at 30
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal NgoMIV site found at 383
    Illegal AgeI site found at 580
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI.rc site found at 1700