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. Author manuscript; available in PMC: 2008 Oct 6.
Published in final edited form as: Anal Biochem. 2006 Sep 22;359(2):262–264. doi: 10.1016/j.ab.2006.08.039

Fig. 2.

Fig. 2

MALDI-TOF/MS of standard cardiolipin and cardiolipin extracted from cytochrome c oxidase or complex I. (A) MALDI-TOF mass spectra of standard cardiolipin. Beef heart standard cardiolipin was obtained from Avanti Polar Lipids. (B) MALDI-TOF mass spectra of HPLC-isolated cardiolipin extracted from HiTrapQ-purified cytochrome c oxidase. (C) MALDI-TOF mass spectra of HPLC-isolated cardiolipin extracted from complex I. In each case cardiolipin was dissolved in chloroform and ∼15 pmol/μL spotted on the MALDI target using dihydroxybenzoic acid as the matrix. Each spectrum represents an average of 100 laser shots. Observed major peaks correspond to tetra-linoleoyl cardiolipin (1448 ± 1) modified by sodium ions.