Iogen Energy Corporation

Philippe J Dufresne

Loreta Gudynaite-Savitch

John J Tomashek

Glenn D Munkvold

Jennifer Donaldson

Gary M Pigeau

Jan-Maarten A Geertman

Christopher M D Hindle

Adam H Colville

Barbara Fryzuk

Boguslaw Ploch

The present invention provides an isolated fungal cell that is capable of producing one or more biomass-degrading enzymes and that exhibits increased or decreased expression or copy number of a polynucleotide encoding a PtaB-like protein. Also provided is a fermentation processes for producing one or more biomass-degrading enzymes comprising a fungal cells exhibiting increased or decreased expression or copy number of a polynucleotide encoding a PtaB-like protein. The biomass-degrading enzymes produced by the isolate fungal cell and fermentation processes of the present invention may be used in a process to produce soluble sugars from biomass.

Fungal cells and fermentation processes

The present invention relates to novel xylose-fermenting yeast strains (for example, yeast of the genus, e.g.,) with an enhanced ability to ferment the xylose (and/or another pentose sugar) present in a lignocellulosic hydrolysate to a fermentation product(s) (for example, an alcohol (e.g., ethanol) or a sugar alcohol (e.g., xylitol)).

Modified yeast strains exhibiting enhanced fermentation of lignocellulosic hydrolysates

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Baie-d'Urfé, Canada

Philippe J Dufresne