Conversion of Corynebacterium glutamicum from an aerobic respiring to an aerobic fermenting bacterium by inactivation of the respiratory chain

► Importance of cytochrome bc1-aa3 complex for Corynebacterium glutamicum is shown. ► Maintenance coefficients of cytochrome bc1 mutant are strongly increased. ► Growth of a C. glutamicum DOOR mutant incapable of aerobic respiration is shown. ► DOOR mutant performs mixed acid fermentation under aerobic conditions.