Skip to main content
. Author manuscript; available in PMC: 2009 Jul 1.
Published in final edited form as: Biochim Biophys Acta. 2008 May 1;1777(7-8):1001–1019. doi: 10.1016/j.bbabio.2008.04.037

Fig. 8. Titration of heme bH in chromatophores from N221I in the presence and absence of antimycin.

Fig. 8

A (top), titration curves showing shift in Em on addition of antimycin; B (middle), titration with antimycin fit by 2-component, n=1; C (bottom), absorbance spectra showing the difference (−380)-(−40) mV from pH 8.7 titration. The difference with and without antimycin shows the contribution of heme bH with its low potential in the presence of antimycin.