Team:HKUST-Hong Kong/modeling.html

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<h3>Modeling</h3>
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<h3>1.</h3>
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////////////////////Testing plain
 
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The E. trojan is a s
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The E. trojan is a synthetic E.coli strain that is engineered to lack an essential gene, nadE, in its genomic DNA. To survive, this strain has to rely on a pre- introduced plasmid (pDummy) bearing the essential gene; thus forcing the bacteria to maintain the plasmid until an alternative source of nadE gene is present. The pDummy, however, has been designed to have a temperature- sensitive origin of replication which would cease to function if the bacterial cells are incubated under higher incubation temperatures (>42แต’C???). For sub-cloning purposes, an E. trojan โ€“ compatible vector plasmid is designed. This carrier vector, like the pDummy, contains the nadE essential gene. Once a gene of interest is inserted into this vector, the plasmid can be transformed to the E. trojan for amplification. Incubating the transformed bacteria at a temperature high enough to inactivate the heat sensitive replication origin of the pDummy would result in pDummy loss, making it necessary for the cells to retain the insert- bearing pCarrier for survival. Bacterial cells that do not take up the pCarrier and its insert would be deprived of the nadE gene product and die; while those who do would survive and continue dividing.
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Revision as of 12:38, 2 October 2011

1.

1.1.

The E. trojan is a s

Modeling


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