Team:Washington/Alkanes/Background

From 2011.igem.org

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[[File:Washington_DC_AAR_diagram.gif|right|400px|thumb|Diagram showing alkane production using ADC and AAR]]
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The world is based upon petroleum based fuels. However, these fuels are non-renewable, and emit carbon dioxide into the atmosphere. Several attempts have been made to replace petroleum with biologically derived fuels that can be made in a renewable manner, with emitted carbon dioxide being reused to make more fuel (ethanol and other alcohols, and biodiesel). However, our current infrastructure and engines are designed to run on alkane based fuels. These "alternative" fuels are characterized by increased corrosivity, and often have lower energy densities, leading to lower fuel efficiency. The optimal fuel would be one that has the compatibility of petroleum based fuels, but be made in a renewable manner. Since no true replacement for petroleum based fuel has been discovered, the solution to this problem would be to make fuel identical to petroleum based fuels in a renewable manner.
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Modern society is completely dependent on petroleum based fuels. Automobiles are slowly transitioning towards electric power. However, for the foreseeable future,  batteries will not be able to hold the energy needed for applications that require long range(e.g. jet planes, maritime shipping, and long range trucking) or high horsepower(e.g. agriculture, construction, industry). Without the use of petroleum, society as we know it would crumble.
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However, petroleum is not a viable long term fuel. Petroleum is a non-renewable, limited resource. When petroleum based fuels are combusted, Caron dioxide is released into the atmosphere. Using current technology, it is impossible to turn this carbon dioxide back into fuel, meaning that the amount of petroleum based fuel  is  a finite commodity. In addition, this excess carbon dioxide is a potent greenhouse gas that contributes to global warming.
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A recent study(cite) has shown production of alkanes(the main component of gasoline) in ''E. coli'' by introducing two genes native to cyanobacteria, Acyl-ACP Reductase(AAR), and Aldehyde Decarbonylase(ADC). AAR reduces Acyl-ACPs( intermediates in fatty acid biosynthesis) into the corresponding long-chain fatty aldehyde. This aldehyde acts as a substrate for ADC, which removes the  aldehyde's carbonyl group, yielding  Formate and an alkane one carbon shorter than the original Acyl-ACP.
A recent study(cite) has shown production of alkanes(the main component of gasoline) in ''E. coli'' by introducing two genes native to cyanobacteria, Acyl-ACP Reductase(AAR), and Aldehyde Decarbonylase(ADC). AAR reduces Acyl-ACPs( intermediates in fatty acid biosynthesis) into the corresponding long-chain fatty aldehyde. This aldehyde acts as a substrate for ADC, which removes the  aldehyde's carbonyl group, yielding  Formate and an alkane one carbon shorter than the original Acyl-ACP.
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[[File:Washington_DC_AAR_diagram.gif|right|400px|thumb|Diagram showing alkane production using ADC and AAR]]

Revision as of 02:43, 9 September 2011

Modern society is completely dependent on petroleum based fuels. Automobiles are slowly transitioning towards electric power. However, for the foreseeable future, batteries will not be able to hold the energy needed for applications that require long range(e.g. jet planes, maritime shipping, and long range trucking) or high horsepower(e.g. agriculture, construction, industry). Without the use of petroleum, society as we know it would crumble.

However, petroleum is not a  viable long term fuel. Petroleum is a non-renewable, limited resource. When petroleum based fuels are combusted, Caron dioxide is released into the atmosphere. Using current technology, it is impossible to turn this carbon dioxide back into fuel, meaning that the amount of petroleum based fuel  is  a finite commodity. In addition, this excess carbon dioxide is a potent greenhouse gas that contributes to global warming.


A recent study(cite) has shown production of alkanes(the main component of gasoline) in E. coli by introducing two genes native to cyanobacteria, Acyl-ACP Reductase(AAR), and Aldehyde Decarbonylase(ADC). AAR reduces Acyl-ACPs( intermediates in fatty acid biosynthesis) into the corresponding long-chain fatty aldehyde. This aldehyde acts as a substrate for ADC, which removes the aldehyde's carbonyl group, yielding Formate and an alkane one carbon shorter than the original Acyl-ACP.


File:Washington DC AAR diagram.gif
Diagram showing alkane production using ADC and AAR