Refactoring M13: Difference between revisions

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M13K07 is a helper phage vector carrying all the essential genes of for M13 phage production in addition to KanR and a p15 ori. We have inserted 8 mutations within the coding regions of genes between geneII and geneIII. These mutations create new cut sites that allow for the easy insertion of synthesized DNA fragments, allowing one to quickly re-engineer the phage or insert novel elements into the genome. The mutations are shown in Fig 1 below. All 8 mutations reduce the phenotype of M13K07 to about 10x below wild type cfu/ml in plaque assays and produce smaller plaques.  
M13K07 is a helper phage vector carrying all the essential genes of for M13 phage production in addition to KanR and a p15 ori. We have created 8 mutations within the coding regions from geneII through geneIII. These mutations create new cut sites that allow for the easy insertion of synthesized DNA fragments, allowing one to quickly re-engineer the phage or insert novel elements into the genome. The mutations are shown in the figure below. The final mutant bearing all 8 mutations shows a "weakened" phenotype of about 10x below wild type cfu/ml phage titer and smaller plaques.  


[[Image:M13Scaffold.jpg|400 px| Entire M13K07 plasmid map showing single cutters]]
[[Image:M13Scaffold.jpg|400 px| Entire M13K07 plasmid map showing single cutters]]
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We are currently using this phage for instructional purposes in genome redesign in the class 20.109 [http://openwetware.org/wiki/20.109%28F07%29:Module_1].
We are currently using this phage for instructional purposes in genome redesign in the class 20.109 [http://openwetware.org/wiki/20.109%28F07%29:Module_1].

Latest revision as of 19:57, 14 November 2007

M13K07 is a helper phage vector carrying all the essential genes of for M13 phage production in addition to KanR and a p15 ori. We have created 8 mutations within the coding regions from geneII through geneIII. These mutations create new cut sites that allow for the easy insertion of synthesized DNA fragments, allowing one to quickly re-engineer the phage or insert novel elements into the genome. The mutations are shown in the figure below. The final mutant bearing all 8 mutations shows a "weakened" phenotype of about 10x below wild type cfu/ml phage titer and smaller plaques.

Entire M13K07 plasmid map showing single cutters


We are currently using this phage for instructional purposes in genome redesign in the class 20.109 [1].