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Team:Edinburgh/Results
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==Lycopene generator == | ==Lycopene generator == | ||
[[Image:Edinburgh Map4 BCarotene.jpg|150px]] | [[Image:Edinburgh Map4 BCarotene.jpg|150px]] | ||
| - | * '''''dxs+crtE+crtB+crtI+crtY''''': Work in progress - encountered problem at final step. Assembly of the three genes ''crtE, crtB''and ''crtI'' together in one construct has failed so consistently and in so many unexpected ways that we are starting to wonder whether this combination is toxic to our host strain under the growth conditions used, though there seems no obvious reason to expect this. Further experiments are required. | + | * '''''dxs+crtE+crtB+crtI+crtY''''': Work in progress - encountered problem at final step. Assembly of the three genes ''crtE, crtB'' and ''crtI'' together in one construct has failed so consistently and in so many unexpected ways that we are starting to wonder whether this combination is toxic to our host strain under the growth conditions used, though there seems no obvious reason to expect this. Further experiments are required. |
==Limonene synthase device== | ==Limonene synthase device== | ||
[[Image:Edinburgh Map5 Limonene.jpg|150px]] | [[Image:Edinburgh Map5 Limonene.jpg|150px]] | ||
* '''''dxs+LIMS+appY''''': Biobrick made - still being tested. A GC/MS test of an ethyl acetate extract from an induced culture did not detect limonene, but the extraction procedure still needs to be properly validated, so we still can't be sure whether the limonene synthase is working in our host. | * '''''dxs+LIMS+appY''''': Biobrick made - still being tested. A GC/MS test of an ethyl acetate extract from an induced culture did not detect limonene, but the extraction procedure still needs to be properly validated, so we still can't be sure whether the limonene synthase is working in our host. | ||
Revision as of 00:40, 30 October 2008
Results and current status as of 29 October 2008. We are hoping to obtain some last-minute results to present at the Jamboree.
Contents |
Overview
Our results are promising but our dream of using bacteria to convert cellulose into starch and β-carotene is still unrealised. Fortunately, the work will be continued by two undergraduate students after Christmas.
Cellulolysis device
- cenA (endoglucanase), cex (exoglucanase) and bglX (beta glucosidase): Biobricks made and ribosome binding site added; ready to test. Last minute result: possible cenA and bglX activity detected using chromogenic substrate, but needs to be repeated and confirmed: hope for more results in our poster and talk at the Jamboree!
- PcstA (promoter): Biobrick made and tested - successful.
Glycogenesis device
- glgC and glgC16 (ADP-glucose pyrophosphorylase, responsible for rate limiting step in glycogenesis): Biobricks made and tested - successful.
Starch synthesis device
- su1 and iso2 (isoamylases): Work in progress - pre-BioBrick constructs in pSB1A2 have been made using the BABEL protocol, but it is still necessary to remove internal EcoRI sites before fully compliant BioBricks will be ready to test. This work will be continued in an undergraduate honours project.
Lycopene generator
- dxs+crtE+crtB+crtI+crtY: Work in progress - encountered problem at final step. Assembly of the three genes crtE, crtB and crtI together in one construct has failed so consistently and in so many unexpected ways that we are starting to wonder whether this combination is toxic to our host strain under the growth conditions used, though there seems no obvious reason to expect this. Further experiments are required.
Limonene synthase device
- dxs+LIMS+appY: Biobrick made - still being tested. A GC/MS test of an ethyl acetate extract from an induced culture did not detect limonene, but the extraction procedure still needs to be properly validated, so we still can't be sure whether the limonene synthase is working in our host.
