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L-ARABINOSE FERMENTING YEAST

United States Patent Application

20170044554
A1
View the Complete Application at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
An L-arabinose utilizing yeast strain is provided for the production of ethanol by introducing and expressing bacterial araA, araB and araD genes, L-arabinose transporters are also introduced into the yeast to enhance the uptake of arabinose. The yeast carries additional genomic mutations enabling it to consume L-arabinose, even as the only carbon source, and to produce ethanol. A yeast strain engineered to metabolize arabinose through a novel pathway is also disclosed. Methods of producing ethanol include utilizing these modified yeast strains.
ZHANG, Min (Lakewood, CO), SINGH, Arjun (Lakewood, CO), SUOMINEN, Pirkko (Minnetonka, MN), KNOSHAUG, Eric (Golden, CO), FRANDEN, Mary Ann (Centennial, CO), JARVIS, Eric (Boulder, CO)
14/ 490,420
September 18, 2014
CONTRACTUAL ORIGIN [0002] The United States Government has rights in this invention under Contract No. DB-AC36-99GO010337 between the United States Department of Energy and the National Renewable Energy Laboratory, a Division of the Midwest Research Institute.