Fig 4.

Reduced minus oxidized spectra of whole cells of DMSS-1 grown in media containing 18 mM malate, 5.4 mM ammonium, and different concentrations of iron. Three peaks typical for the absorption by cytochrome c were prominent in iron-replete cells. The ratios of these peaks to the background signal were smaller when DMSS-1 was grown in iron-deficient media. All samples contained similar amounts of total protein (values stated in the brackets).