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<h1><font color="grey"; face="Tw Cen MT"; size="10"> MSU's Proposal </font></h1><br>
 
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<h1><font color="grey"; face="Tw Cen MT"; size="10"> Description </font></h1><br>
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     <h2><font color="grey"; face="Tw Cen MT"; size="5"><b>Shewlock in Water Treatment:</b></font></h2>
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     <h2><font color="grey"; face="Tw Cen MT"; size="5"><b>Biosensing Water Contaminants with Genetically Engineered <em>Shewanella oneidensis </em> MR-1</b></font></h2>
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     <p> <font face="Tw Cen MT"; size="4"> The ability to measure electricity production by <em>Shewanella</em> has the potential to be used as an economical alternative to current measurement systems that detect for harmful water contaminants. </font></p>
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     <p> <font face="Tw Cen MT"; size="4"> As one of the most important natural resources, the declining quality of fresh water is a world-wide issue. Pollutants such as pharmaceuticals, hormones and heavy metals are rarely monitored and the need to detect and remove these compounds in an inexpensive way is what motivates this project. The marine bacterium <em> Shewanella oneidensis </em> MR-1 could be a part of the solution through its unique ability to interact with electronics. The Mtr pathway in <em> S. oneidensis </em> MR-1 is an external electron transportation pathway that is able to transfer electrons to an external acceptor such as an anode, thus generating electric current that is utilized in bioelectrochemical systems. We are utilizing <em> S. oneidensis </em> MR-1 △MtrB, the MtrB gene is removed, to prevent electron flow to an outside source through this key protein. We are then inserting a plasmid into this strain that contains the MtrB gene under control of a promoter that activates transcription of the protein when induced by compounds such as pesticides and metals in the water. This will allow for controlled electrical expression that can be used in microbial fuel cells to create a biosensor for the detection of these compounds. This biosensor will then be engineered to be manufactured on a large scale to be used for research, education, humanitarian efforts and even consumer use. Although the proof of concept is currently tested in a single chambered bioelectrochemical system, an affordable and portable paper microbial fuel cell system is currently in development. </font></p>
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Revision as of 21:21, 24 October 2017

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MSU's Proposal



Shewlock in Water Treatment:

The ability to measure electricity production by Shewanella has the potential to be used as an economical alternative to current measurement systems that detect for harmful water contaminants.

Why?

As a Michigan team, water quality is an issue that hits very close to home. The Flint Water Crisisgained national attention for the extremely elevated lead contamination in the drinking water. This crisis began in 2014, however the Flint residents are advised to continue using filtered or bottled water until the pipes are fully replaced by the year 2020. Another famous American case of poor water quality is the Hinkley groundwater contamination made public by Erin Brockovich in 1993.