Figure 5. Characteristics of aerobic cultures of S. oneidensis .

A. Dissolved oxygen (line with diamond markers) in cultures used in Figure 4A. Expression of the nrfA gene (Bar) was included to show the relation of these parameters. B. Assay for remaining fumarate in aerobic growing cultures in the absence or presence of 20 mM. ΔfccA^c represents the fccA mutant strain containing pHG101-fccA. Experiments were performed at least three times and error bars represent the standard deviation of the mean.