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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2008 Sep 5;20(2):198–212. doi: 10.1016/j.jasms.2008.08.017

Figure 1.

Figure 1

Positive ion ESI MS of crude lipid extracts isolated from the cell membranes of (A) wild type and (B) GPCho-deficient mutant R. sphaeroides (both with CcO over-expression). The negative ion ESI MS spectra are shown in panels (C) and (D), respectively. Only those ions within the selected m/z range of interest (600 – 950) are displayed. The italic underlined numbers represent ions of interest to this study.