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Catherine Asleson Dundon

Catherine Asleson Dundon, Englewood, CO US

Patent application numberDescriptionPublished
20100143997ENGINEERED MICROORGANISMS CAPABLE OF PRODUCING TARGET COMPOUNDS UNDER ANAEROBIC CONDITIONS - The present invention is generally provides recombinant microorganisms comprising engineered metabolic pathways capable of producing C3-C5 alcohols under aerobic and anaerobic conditions. The invention further provides ketol-acid reductoisomerase enzymes which have been mutated or modified to increase their NADH-dependent activity or to switch the cofactor preference from NADPH to NADH and are expressed in the modified microorganisms. In addition, the invention provides isobutyraldehyde dehydrogenase enzymes expressed in modified microorganisms. Also provided are methods of producing beneficial metabolites under aerobic and anaerobic conditions by contacting a suitable substrate with the modified microorganisms of the present invention.06-10-2010
20100159546METABOLIC ENGINEERING OF YEASTS FOR THE PRODUCTION OF 1-BUTANOL - The present invention provides genetically modified yeast cells, and methods of using those yeast cells, to produce 1-butanol. The yeast cell can be selected from the genera 06-24-2010
20110020889YEAST ORGANISM PRODUCING ISOBUTANOL AT A HIGH YIELD - The present invention provides recombinant mircoorganisms comprising an isobutanol producing metabolic pathway and methods of using said recombinant microorganisms to produce isobutanol. In various aspects of the invention, the recombinant microorganisms may comprise a modification resulting in the reduction of pyruvate decarboxylase and/or glycerol-3-phosphate dehydrogenase activity. In various embodiments described herein, the recombinant microorganisms may be microorganisms of the 01-27-2011
20110076733CYTOSOLIC ISOBUTANOL PATHWAY LOCALIZATION FOR THE PRODUCTION OF ISOBUTANOL - The present invention provides recombinant microorganisms comprising isobutanol producing metabolic pathway with at least one isobutanol pathway enzyme localized in the cytosol, wherein said recombinant microorganism is selected to produce isobutanol from a carbon source. Methods of using said recombinant microorganisms to produce isobutanol are also provided. In various aspects of the invention, the recombinant microorganisms may comprise a cytosolically active isobutanol pathway enzymes. In some embodiments, the invention provides mutated, modified, and/or chimeric isobutanol pathway enzymes with cytosolic activity. In various embodiments described herein, the recombinant microorganisms may be microorganisms of the 03-31-2011

Catherine Asleson Dundon, Minneapolis, MN US

Patent application numberDescriptionPublished
20090053782YEAST CELLS HAVING DISRUPTED PATHWAY FROM DIHYDROXYACETONE PHOSPHATE TO GLYCEROL - Yeast cells are genetically modified to disrupt a native metabolic pathway from dihydroxyacetone to glycerol. In certain aspects, the yeast cell is of the genera 02-26-2009
20090253189Lactic Acid-Producing Yeast Cells Having Nonfunctional L- or D-Lactate:Ferricytochrome C Oxidoreductase Cells - Yeast cells having an exogenous lactate dehydrogenase gene ae modified by reducing L- or D-lactate:ferricytochrome c oxidoreductase activity in the cell. This leads to reduced consumption of lactate by the cell and can increase overall lactate yields in a fermentation process. Cells having the reduced I, or D-lactate:ferricytochrome c oxidoreductase activity can be screened for by resistance to organic acids such as lactic or glycolic acid.10-08-2009
20100137551Methods and materials for the production of D-lactic acid in yeast - The present invention relates to biocatalysts that are cells, optimally of the Crabtree-negative phenotype, comprising expression vectors encoding genes heterologous to the cell that enable increased production of organic products. More specifically, the invention relates to genetically modified 06-03-2010