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. Author manuscript; available in PMC: 2012 May 15.
Published in final edited form as: J Am Soc Mass Spectrom. 2008 Nov 21;20(3):507–519. doi: 10.1016/j.jasms.2008.11.008

Fig. 1.

Fig. 1

The charge state distributions of the GAR peptides under positive ESI, as obtained using an Orbitrap analyzer. (A) The MS1 spectrum of the unmodified peptide GRGGFGGRGGFRGGRGG; (B) the MS1 spectrum of the per-aDMA peptide GR#GGFGGR#GGFR#GGR#GG, where #=aDMA. Abbreviations: z, charge state; R, resolution.