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. Author manuscript; available in PMC: 2008 Aug 21.
Published in final edited form as: Anal Chem. 2007 Jan 24;79(5):2067–2077. doi: 10.1021/ac061946f

Figure 9.

Figure 9

Comparison of IRMPD mass spectra of (A) normal precursor isolation (50 W, 1.5ms) and (B) multi-adduct isolation (50 W, 1.5ms) for the [M - 5H]5− complex containing duplex d(GCGGGAATTGGGCG)/(CGCCCAATTCCCGC) and daunomycin. Isolation of the precursor [M - 5H]5− through the [M + 3Na - 8H]5− species are included in the multi-adduct spectrum as shown by the inset in B compared to isolation of only the deprotonated precursor for the normal isolation mode spectrum in the inset in A. Fragment labels include a subscript G or C if they specifically pertain to the G-rich or C-rich strand, respectively. An asterisk (*) symbol denotes the precursor ion selected.