Team:UST-Beijing/Project

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''Gene H-transfer: bile acid receptor in E.coli & proteorhodpsin in mitochindrial inner membrane
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In order to celebrate the power of gene H(orizontal)-transfer between pro- and eukaryotes, we constructed two fusion proteins and tested their function: (1). a synthetic bile acid receptor in E.coli using a mammalian nuclear receptor LXR. As proof-of-principle, the regulatory circuit in symbiotic bacteria could be harmoniously linked to metabolic pathway of their host.  Potential application includes in situ synthesis of pharmaceuticals on-demand in the digestive tract.  (2) a synthetic light-driven proton pump in human mitocondrial inner membrane using a bacterial proteorhodopsin. Preliminary testing demonstrated cellular sensitivity to light radiation.  Application and utility relies on result of in-depth characterization of such system design.  ''
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Revision as of 05:13, 2 September 2011


This is a template page. READ THESE INSTRUCTIONS.
You are provided with this team page template with which to start the iGEM season. You may choose to personalize it to fit your team but keep the same "look." Or you may choose to take your team wiki to a different level and design your own wiki. You can find some examples HERE.
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UST-Beijing logo.png

Gene H-transfer: bile acid receptor in E.coli & proteorhodpsin in mitochindrial inner membrane


In order to celebrate the power of gene H(orizontal)-transfer between pro- and eukaryotes, we constructed two fusion proteins and tested their function: (1). a synthetic bile acid receptor in E.coli using a mammalian nuclear receptor LXR. As proof-of-principle, the regulatory circuit in symbiotic bacteria could be harmoniously linked to metabolic pathway of their host. Potential application includes in situ synthesis of pharmaceuticals on-demand in the digestive tract. (2) a synthetic light-driven proton pump in human mitocondrial inner membrane using a bacterial proteorhodopsin. Preliminary testing demonstrated cellular sensitivity to light radiation. Application and utility relies on result of in-depth characterization of such system design.

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Contents

We are engineering a bile acid sensor in E.coli and others 

 Using lacI DNA-binding domain and LXRbeta ligand-binding domain, we made an artificial bile acid receptor
which can regulate expression of target gene within a natural lacI operon. As proof of principle, we

demonstrate that regulation of bacteria gene expression by host eukaryocyte metabolites is achievable using chimeric nuclear receptors. Through directed molecular evolution, a harmonious signal network regulating metabolism of both prokaryocytes and their host eukaryocytes in the digestive tract is feasible.

Project Details

Part 2

The Experiments

Part 3

Results

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