Xylose-utilizing, ethanol producing strains of Zymomonas mobilis with improved performance in medium comprising biomass hydrolysate were isolated using an adaptation process. Independently isolated strains were found to have independent mutations in the same coding region. Mutation in this coding may be engineered to confer the improved phenotype.
STATEMENT OF GOVERNMENT RIGHTS
This invention was made with United States Government support under Award No. DE-FC36-07GO17056 awarded by the Department of Energy. The U.S. Government has certain rights in this invention.