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. Author manuscript; available in PMC: 2010 Apr 22.
Published in final edited form as: J Am Chem Soc. 2009 Apr 22;131(15):5444–5459. doi: 10.1021/ja806534r

Figure 2.

Figure 2

Relative intensities of ECD fragment ions. Intensities are taken from ECD spectra and reported as a total percent of the sum of the intensities of backbone fragments, side-chain losses and the charge reduced cation radical. The intensities attributed by -1 or +1 Da shift from c or z ions by the abstraction of a Cα hydrogen are summed up to those of c or z ions.