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. 2002 Jul 15;99(15):9703–9708. doi: 10.1073/pnas.152120699

Figure 2.

Figure 2

Absorption spectra of the b-type cytochrome formed after the addition of heme to E. coli apo-CcmE′, showing the oxidized spectrum (——), the reduced spectrum obtained immediately after the addition of disodium dithionite (- - -), and the spectrum obtained after treating the ferric b-type complex with 2 mM potassium cyanide (– – –). Absorption spectra were recorded by using ≈5 μM b-type cytochrome in 50 mM sodium phosphate buffer, pH 7.0.