Team:TU-Munich/Project/Overview

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Project Overview

In the 2013 competition the TU Munich iGEM team has developed a transgenic moss filter which is capable to reduce the contamination of aquatic ecosystems with xenobiotics. The topic of remediation using transgenic organisms is present in every year of iGEM and we want to take this idea to the next level. For this reason we decided to use a photoautotrophic chassis, the moss Physcomitrella patens. The following section gives an overview over the theoretical background of our project.

Phytoremediation

Phytoremediation describes the treatment of environmental problems through the use of plants. Here we identified problematic substances and described basic principles.
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Physcomitrella

Next, we introduced Physcomitrella patens as a new chassis to iGEM. We described advantages, options and our expression strategy.
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Localization

As the mechanisms of the effectors responsible for Phytoremediation are very different, it is necessary to have a protein expression system which is able to accomplish cytosolic, secreted and receptor bound localization of proteins.
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BioDegradation

BioDegradation describes the application of enzymatic catalysis for the degradation of problematic xenobiotics using the enzymes erythromycin esterase, catechol dioxygenase and laccase.
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BioAccumulation

For BioAccumulation we employed different binding proteins which immobilize pollutants on the moss cells. In this context we targeted the substances fluorescein, DDT and microcystin.
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Kill-Switch

In order to prevent uncontrolled growth of transgenic moss in the environment, we developed a Kill-Switch which is triggered by sunlight. The GM-Moss can only be grown where red-light is filtered out of the electromagnetic spectrum. Read more

Safety

Our safety page describes our evaluation concerning safety issues, especially a safety evaluation of our BioBricks and Physcomitrella patens.
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