FIG 6.
Cell growth of and fermentation product formation by adhR mutant strains carrying plasmids expressing full-length or N-terminally truncated AdhR proteins. The strains were grown in P2 medium containing 1 g/liter yeast extract and 4 g/liter CaCO3. Cell growth was monitored spectrophotometrically at 600 nm (OD600). The concentrations of butanol, ethanol, and acetone in the medium were measured during the cultivation. Data shown in all panels are means ± the SD (n = 3 independent experiments).