Team:CU-Boulder/Project

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<dt>The 2013 CU-Boulder iGEM Project</dt>
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!align="center"|[[Team:CU-Boulder|Home]]
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<p>The main focus of the iGEM project here at CU-Boulder is to help make synthetic biology more accessible and affordable.  We spent the summer developing parts, procedures, and documentation to help make this vision a reality.  The original goal was to create the constructs and purification methods necessary to produce and isolate restriction enzymes.  Along the way we explored some novel approaches to DNA and protein purification and developed experimentally tested protocols for these and other procedures essential to Biobrick assembly.  Our purification methods exemplify the ideal of using common lab materials to make performing everyday lab techniques as accessible and inexpensive as possible.  A related aspect of our project was exploring methods of recycling consumables associated with lab work in order to reduce waste and material expenses.  We hope that our findings using this "do-it-yourself" approach of synthetic biology help make this type of research more accessible for those where funding is a limiting factor.
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!align="center"|[[Team:CU-Boulder/Team|Team]]
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!align="center"|[https://igem.org/Team.cgi?year=2013&team_name=CU-Boulder Official Team Profile]
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!align="center"|[[Team:CU-Boulder/Project|Project]]
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    <li><a href="#tabs-1">Project Abstract</a></li>
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<li><a href="https://2013.igem.org/Team:CU-Boulder/Project/Kit/RestrictionEnzymes">Restriction Enzymes</a></li>
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    <li><a href="#tabs-2">Background</a></li>
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<li><a href="https://2013.igem.org/Team:CU-Boulder/Project/Kit/Purification">Protein Purification</a></li>
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    <li><a href="#tabs-3">Biobrick Assembly Kit</a></li>
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<li><a href="https://2013.igem.org/Team:CU-Boulder/Project/Kit/DNAPurification">DNA Purification</a></li>
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    <li><a href="#tabs-4">ApoI Malaria Test Kit</a></li>
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        Restriction enzymes are invaluable tools in the field synthetic biology, and are essential for carrying out BioBrick assembly. However, these enzymes also represent a significant portion of the cost associated with gene cloning and DNA analysis.  Here at the University of Colorado-Boulder, our vision is to develop the parts and methods necessary to produce and purify these enzymes cheaply and reliably.  In order to make our project successful, we will be creating the BioBrick constructs that contain the restriction enzymes we are trying to produce.  In addition, we will be developing procedures that allow us to purify these enzymes cheaply and effectively.  The end result of our project will be the completion of several RE prep kits which will contain all of the components necessary to create working stocks of several commonly used restriction enzymes, including EcoRI, XbaI, and PstI which are all part of the BioBrick standard.
 
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Restriction-modification (R-M) systems are used by prokaryotes (mostly bacteria) as a defense mechanism to protect themselves from infection of foreign DNA from viruses, such as bacteriophages, and can be thought of as the prokaryotic equivalent of the immune system.  The function of an R-M system requires two independent enzymes that share a particular DNA sequence specificity:  a restriction endonuclease (REase) which is used to digest foreign DNA, and a modification methyltransferase (MTase) which is used to protect the cell’s native DNA.  Type II R-M systems are the simplest and most prevalent, and also produce REases (and MTases) which are highly predictable with regard to sequence specificity.  These characteristics have enabled these enzymes to become valuable tools in synthetic biology for for the purposes of gene cloning and DNA analysis.  Each REase and corresponding MTase recognize a specific sequence of DNA which is typically 4 to 8 nucleotides in length and is usually palindromic.  The REase effectively cleaves both strands of the DNA backbone at a specific position within this  sequence, which can result in either “blunt” or “sticky” ends depending on the location of the cut site.  This enzyme typically forms a homodimer and requires an Mg2+ ion for enzymatic activity to take place.  An MTase is used to tag the native DNA with a methyl group at the site of each specific sequence, which sterically inhibits the binding of the REase.  This enzyme is typically monomeric and is necessary to protect the cells native DNA from REase activity.  R-M system must be closely regulated by the cell in order to avoid auto-restiction and cell death in addition to over-modification, which could potentially interfere with genome function.
 
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Latest revision as of 15:35, 28 October 2013

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The 2013 CU-Boulder iGEM Project

The main focus of the iGEM project here at CU-Boulder is to help make synthetic biology more accessible and affordable. We spent the summer developing parts, procedures, and documentation to help make this vision a reality. The original goal was to create the constructs and purification methods necessary to produce and isolate restriction enzymes. Along the way we explored some novel approaches to DNA and protein purification and developed experimentally tested protocols for these and other procedures essential to Biobrick assembly. Our purification methods exemplify the ideal of using common lab materials to make performing everyday lab techniques as accessible and inexpensive as possible. A related aspect of our project was exploring methods of recycling consumables associated with lab work in order to reduce waste and material expenses. We hope that our findings using this "do-it-yourself" approach of synthetic biology help make this type of research more accessible for those where funding is a limiting factor.

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