Team:PennState

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Revision as of 19:47, 20 June 2008

E. coLisa

Project
Design: Wet Lab
Design: Printer
Design: Software
Testing
Constructing Our Project: The Wetlab
Protocols
Final Result of E. coLisa

evoGEM

Introduction to evoGEM
Project Design
Results
PENN STATE iGEM 2008

Welcome to the Penn State iGEM 2008 team website. In this website we explain our project and the two strategies we took to construct a phthalate sensing bacteria.

If there are any questions or comments about the information on this site please contact me at gjt5001@psu.edu.

Phthalate Pre prescreening E. coli

Our project aims to construct a bio sensor which will ultimately serve as a pre screening tool to detect the presence of phthalates in water sample. Recently phthalates have been shown to cause negative health effect in humans; some phthalates are even though to be carcinogenic. Analytical detection methods for these compounds are compound specific as well as very costly. Having a simple, and cheep tool to screen for phthalates as a general class of compounds would eliminate some of the cost and time involved in current detection methods.

We use the natural human nuclear hormone receptor protein that recognizes phthalates as an agonist (hPPARα), and expressing it heterologously in Escherichia Coli. Because of the complexity of this mammalian protein, expressing it in a prokaryote is difficult. We have two different strategies to express hPPARα and using it to detect phthalates in E. Coli.

Smart Fold Reporter
name it

Smart Fold Reporter is the subproject for the first strategy we are trying to express hPPARalpha in E. coli. This project uses altered growth conditions such that this nuclear hormone receptor protein can be successfully epressed and used to transcriptionally report for the presence of phthalates.

Nuclear Fusion
name it

Nuclear Fusion is our second approach to constructing a phthalate detection system in E. coli. In this project we use just the ligand binding domain of hPPARalpha fused to thymidylate synthase (TS). Binding of the phthalate ligand to this chimeric protein activates TS. When this construct is placed in a TS diffident strain, only E. coli in the presence of a hPPARalpha agonist will survive.

Quick Links

Table of our Contributions to the Registry

Interactive E. coLisa Schematic

The University of Calgary

Obrien Centre for the BHSC

Drew Endy On Synthetic Biology


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