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. Author manuscript; available in PMC: 2012 Jun 27.
Published in final edited form as: J Am Soc Mass Spectrom. 2009 Dec 11;21(3):455–459. doi: 10.1016/j.jasms.2009.11.011

Figure 3.

Figure 3

Region of an ECD spectrum of SWIFT isolated ions from bovine histone H4 charge state 18+. Over 90% of signals whose signal to noise ratio greater than 3 can be assigned as c or z ions of protein sequence with predicted modifications. Upper left trace: a portion of spectrum m/z 573-600 shows pure c-ions. Upper right trace: a section of spectrum (m/z 803-813) shows only z-ions.