Team:Tyngsboro MA Tigers

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Revision as of 22:55, 8 March 2012

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	Team Tyngsboro_MA_Tigers

Official Team Profile

A colorless, odorless, and soundless killer takes the lives of nearly 2,100 innocent United States citizens every year; that is an average of 3 people every day. CO poisoning is the leading cause of unintentional poisoning deaths in the United States and 1 in every 2,400 people falls victim to CO poisoning, unwarned of the invisible attacker. Males are 2.3 times more likely to die from CO poisoning than females, and people over the age of 65 have the highest risk of falling victim to this silent killer. Only by being aware of the grave danger, and understanding the structure and works of the gas, we can create a circuit that gives a scent to CO and a warning before it's too late.

Citation- "Carbon Monoxide Poisoning Statistics." Christensen Law Firm. 03 Sept. 2010. Web. 1 Mar. 2012. [<http://www.utahpersonalinjurylawfirm.com/2010/09/carbon-monoxide-poisoning-statistics/>].

Our Idea:

We are looking to develop a genetic circuit for bacteria that converts the odorless carbon monoxide into a malodorous output. Coupled with the common household detector, we might be able to reduce even further CO-related deaths.

R. rubrum:

Rhodospirillum rubrum is a bacterium that uses carbon monoxide as an energy source. This photosynthetic bacterium can metabolize carbon monoxide in the reaction: CO + H2O --> CO2 + H2

The enzyme carbon monoxide dehydrogenase (CODH) is a peripheral membrane protein that carries out the primary oxidation of CO to CO2 and then passes the products through a ferredoxin-like sub-unit. R. rubrum also has a carbon monoxide-sensing protein called CooA that activates the gene expression of oxidation enzymes. In our research on R. rubrum, we found that a Turkey iGEM team in the 2010 college division developed CooA and CooA-responsive promoter biobricks they wanted make to transform into E. coli. They were able to successfully build these parts, and now our goal is to try and put them into our own genetic circuit that, in the presence of carbon monoxide, will output an unpleasant warning smell.

Notebook

Finding Our Idea

Agenda List

Blog about brainstorming

Creating the Genetic Circuit Once we had our idea solidified, the next step was coming up with a circuit to make our idea into a reality. Using the [http://www.tinkercell.com/ TinkerCell] program to create an example of the cell, we wanted to follow the KISS rule and keep things as simple as possible. The 2010 METU iGEM team created a [http://partsregistry.org/wiki/index.php?title=Part:BBa_K352014 part] that successfully detected carbon monoxide, and contained a Lacl promoter, RBS, and CooA, but from that point what the output was seemed to be fairly open for change. We wanted the output smell to be very unpleasant and trigger a negative response, and decided indole, the smell naturally made by e. coli, would be an excellent choice. We chose tnaA, the indole producing gene, as the last major step in our genetic sequence, and an [http://partsregistry.org/wiki/index.php?title=Part:BBa_J45999 odorless chassis] so that indole wouldn't be naturally produced by the detector.

Obstacles in creating the circuit were finding a tnaA producing gene (still working on that) and...

The parts chosen were all marked as 'working' in the parts registry, and most had the same assembly methods, making them compatible. Our major concerns are that we won't be able to find a tnaA gene by itself, or that the parts chosen won't work be compatible in practice.

Also, special thanks go out to our iGEM adviser, Alyssa Henning!

Fundraising

Results/Conclusions

What did you achieve over the course of your semester?

Safety

What safety precautions did your team take? Did you take a safety training course? Were you supervised at all times in the lab? Each member of Tyngsborough Igem Tiger Squad has learned and currently follows the Flynn's scientific safety contract. Each new year, we take a scientific refresher to brush up on our safety procedures. We are all supervised in our labs by our instructors Mrs. Boughan and Mrs. Ravigala.

Here is a link to youtube to watch a funny safety video on what NOT to do in a lab setting.

[http://www.youtube.com/watch?v=GOQAq4Nl4og Click here for video]

File:Safety Contract-1.pdf

Attributions

Who worked on what?

Human Practices

Currently, the common CO detectors on the market are only sound-based. However, as people age, their senses aren't quite what they used to be, and our cell could help save even more lives with another sensory warning of the hidden danger. Also, many work places, such as construction sites, are extremely loud, easily loud enough to drown out the little beeping of a sensor, however, a disgusting and identifiable smell permeating through the compound could again save even more lives. Coupled with the common household detector, our cell could greatly reduce the number of CO deaths per year.

Fun!

What was your favorite team snack?? Have a picture of your team mascot?

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	[[File:Safety_Contract-1.pdf]]		[[File:Safety_Contract-1.pdf]]