Fig. 4From: XC_0531 encodes a c-type cytochrome biogenesis protein and is required for pathogenesis in Xanthomonas campestris pv. campestris Room-temperature absorption spectra of soluble cytochromes in the membranes of 8004, 0531pk, C0531 and 015F07. The c-type cytochromes showed peaks at about 552Â nm and the b-type cytochromes at about 560Â nm. Samples were reduced with sodium dithionite or oxidized with ammonium persulfate. The spectra were reduced-minus-oxidized spectra at equal protein concentrations. Absorption maxima were indicated by arrowsBack to article page