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Team:Edinburgh/Project/Future
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Revision as of 12:01, 26 October 2010
Future Work: Sequential addition
One of the future expansions of BRIDGE that we have discussed involves using it to directly introduce genes in the genome next to each other without using the BioBrick method before-hand. For example, if you wanted to insert four genes with the steps described in the protocol section, it would take eight steps. If you do this with the method below it would only take four steps.
At the first step of the process, the first antibiotic resistance gene and sacB are introduced alongside the first gene. The antibiotic resistance gene can then be replaced with the next gene and a second antibiotic resistance gene, thereby cycling the antibiotic resistance such that selection is different at each step. At the last step, both markers are removed and the final constructs can be selected for by growth on sucrose (growth on sucrose can also be used as a negative control at each stage, although this would only be to confirm the persistence of the marker).
The final construct would look as below:
This has not yet been tested, but the principle is not too distant from the original method, so it would be nice to demonstrate it if anyone ever gets the chance.
