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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Org Biomol Chem. 2013 Apr 7;11(13):2206–2212. doi: 10.1039/c3ob26251k

Fig. 5.

Fig. 5

Electrospray ionisation-ion mobility spectrometry-mass spectrometry shows changes in average collision cross-sectional area of cyt c in presence and absence of the receptor indicating that the receptor can bind to multiple conformations of cyt c. (a) ESI-MS of cyt c in presence of 1 equivalent of receptor, shows receptor binding to the +7 (red-unbound; green-receptor bound) and +6 (blue-unbound; purple-receptor bound) charge states. Extracted ion mobility chromatograms show collisional cross-sectional areas for (b) the +7 charge state signals for unbound (red) and receptor bound (green) cyt c.