Generator

Part:BBa_K2315006

Designed by: FANG BA   Group: iGEM17_Shanghaitech   (2017-10-21)
Revision as of 14:05, 1 November 2017 by Luofang (Talk | contribs)

RpaR-pRpa-GFP
Group: Shanghaitech iGEM 2017

The HSL receiver RpaR from Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009) activates expression of GFP protein in response to Coumaroyl-HSL.

This Receiver can be easily replaced by other AHL receivers in our collection. A full collection could be found in: http://2017.igem.org/Team:Shanghaitech/Library

Usage and Biology

File:RpaRpRpaGFPPARTS.png
Fig. 1 Genetic Circuit Design

When AHL is added with concentration higher than a critical value, the constitutively expressed RpaR will bind to the AHL molecule Coumaroyl-HSL, dimerize and bind to the pRpa regulatory sequence to activate GFP expression.


Fluorescent Response to cognate Coumaroyl-HSL

To test this part, we used standard Coumaroyl-HSL (HSL produced by RpaI in P.aeruginosa) to determine the response curve.

File:T--Shanghaitech--RpaRGFPLF.png
Fig. 1 RpaR-pRpa-GFP‘s response to cognate CoumaroylHSL

Orthogonality test against non-cognate inducers

We have characterized crosstalk response of RpaR to several non-cognate AHLs:

Fig. 2 Orthogonality test of RpaR-pRpa-GFP (i):Fluorescent response to cognate and non-cognate AHLs (ii)Dose-Response curves for cognate and non-cognate AHLs (iii-vi)Fluorescent response to non-cognate AHLs in compared with Coumaroyl-HSL

It has shown that RpaR is sensitive to it's cognate HSL and has obvious crosstalk with 3OC8-HSL in Tra System in relatively high concentration.


RpaR-RHOPA-pLas-GFP

RpaR-RHOPA-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
    INCOMPATIBLE WITH RFC[21]
    Illegal BamHI site found at 493
    Illegal XhoI site found at 128
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal NgoMIV site found at 136
    Illegal NgoMIV site found at 200
    Illegal NgoMIV site found at 485
    Illegal NgoMIV site found at 573
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal BsaI.rc site found at 1704


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Categories
Parameters
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