Team:ETH Zurich/Overview

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''''''Make yourself simpler, stupid! Or how engineering a self-minimizing cell leads to the Minimal Genome''''''<br>
''''''Make yourself simpler, stupid! Or how engineering a self-minimizing cell leads to the Minimal Genome''''''<br>
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This year's ETH Zurich project tackles a fundamental problem of synthetic biology: the minimal genome.
This year's ETH Zurich project tackles a fundamental problem of synthetic biology: the minimal genome.
Exploring the minimal set of genes that is able to support life is not only a question of significant biological interest, it is also a crucial step towards the implementation of orthogonal functionalities into a rationally designed complex biological system. An organism carrying a minimal genome would provide a simple chassis for biological engineering.
Exploring the minimal set of genes that is able to support life is not only a question of significant biological interest, it is also a crucial step towards the implementation of orthogonal functionalities into a rationally designed complex biological system. An organism carrying a minimal genome would provide a simple chassis for biological engineering.
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We propose a novel method to randomly delete chromosomal DNA fragments by controlled expression of restriction enzymes and ligases in vivo. Furthermore we develop a chemostat-based selective condition to select for cells with a smaller genome size by constraining nucleotide availability. Computationally, we analyze the genome for the optimal restriction enzyme, and perform flux balance analysis on a genome scale model to predict growth of reduced genome strains. Finally, we simulate the restriction enzyme expression and the progression of selection .<br>
We propose a novel method to randomly delete chromosomal DNA fragments by controlled expression of restriction enzymes and ligases in vivo. Furthermore we develop a chemostat-based selective condition to select for cells with a smaller genome size by constraining nucleotide availability. Computationally, we analyze the genome for the optimal restriction enzyme, and perform flux balance analysis on a genome scale model to predict growth of reduced genome strains. Finally, we simulate the restriction enzyme expression and the progression of selection .<br>
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==="Meet us" video===
==="Meet us" video===

Revision as of 16:22, 11 October 2008


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Project Abstract

'Make yourself simpler, stupid! Or how engineering a self-minimizing cell leads to the Minimal Genome'

This year's ETH Zurich project tackles a fundamental problem of synthetic biology: the minimal genome. Exploring the minimal set of genes that is able to support life is not only a question of significant biological interest, it is also a crucial step towards the implementation of orthogonal functionalities into a rationally designed complex biological system. An organism carrying a minimal genome would provide a simple chassis for biological engineering. We attempted to exploit the power of accelerated evolution for a genome reduction strategy. Our approach is base on an iterative cycle of genome reduction and strain selection. We propose a novel method to randomly delete chromosomal DNA fragments by controlled expression of restriction enzymes and ligases in vivo. Furthermore we develop a chemostat-based selective condition to select for cells with a smaller genome size by constraining nucleotide availability. Computationally, we analyze the genome for the optimal restriction enzyme, and perform flux balance analysis on a genome scale model to predict growth of reduced genome strains. Finally, we simulate the restriction enzyme expression and the progression of selection .

"Meet us" video