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Engineering cells for more efficient biofuel production
Date:2/19/2013

t here in the cytoplasm, have to wait to see what comes out of the mitochondria and try to transform that. But when you bring them into the mitochondria, they're better at competing with the pathways in there," Avalos says.

The findings could have many applications in metabolic engineering. There are many situations where it could be advantageous to confine all of the steps of a reaction in a small space, which may not only boost efficiency but also prevent harmful intermediates from drifting away and damaging the cell.

The researchers are now trying to further boost isobutanol yields and reduce production of ethanol, which is still the major product of sugar breakdown in yeast.

"Knocking out the ethanol pathway is an important step in making this yeast suitable for production of isobutanol," Stephanopoulos says. "Then we need to introduce isobutanol synthesis, replacing one with the other, to maintain everything balanced within the cell."


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Contact: Caroline McCall
cmccall5@mit.edu
Massachusetts Institute of Technology
Source:Eurekalert

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