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. 2011 Sep 15;6(9):e24088. doi: 10.1371/journal.pone.0024088

Figure 18. LC-ESI-MS negative ion mode spectra of cardiolipin (CA) molecular species of lipid extract of peak 1 fraction of E. coli strain BL21DE3(pMALE-ptsG).

Figure 18

Arrows indicate different CA molecular species detected in peak 1 and standard preparations (for standard preparation see Figure S12 at Saier web site). I.S., internal standard; right handed numbers at the top of the Y axis indicate full-scale intensity in arbitrary units. The lipid contents of E. coli strain BL21DE3(pMALE-ptsG) were extracted and analyzed as described in Materials and Methods.