The invention provides isolated or recombinant ethanologenic bacteria that have increased expression of transhydrogenase genes and methods of preparation. The invention also provides methods of producing ethanol using the bacterium and corresponding kits.
GOVERNMENT SPONSORED RESEARCH
 This invention was made with United States Government support under Contract Nos. US DOE FG02-96ER20222, DE-FG36-08GO88142, and DE-FC36-GO17058, awarded by the U.S. Department of Energy. The Government has certain rights in this invention.