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. Author manuscript; available in PMC: 2009 Apr 2.
Published in final edited form as: Biochemistry. 2008 Dec 30;47(52):14009–14019. doi: 10.1021/bi801392j

Figure 2.

Figure 2

IT MS2 spectra of the [M − H]− ions at m/z 427 (a) and m/z 429 (b) from a 34S-labeled isotopologue and the ion at m/z 429 (c) from a 2H2-labeled isotopologue and IT MS3 spectra of the ions at m/z 412 (427 → 412) (d) and m/z 414 (429 → 414) from a 34S-labeled isotopologue (e) and m/z 414 (429 → 414) from a 2H2-labeled isotopologue (f). The insets in panels e and f show the IT MS4 spectra of the ions at m/z 223 (429 → 414 → 223) and m/z 222 (429 → 414 → 222), respectively.