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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2010 Sep 24;21(12):2051–2061. doi: 10.1016/j.jasms.2010.08.018

Figure 4.

Figure 4

a) LC-chromatogram of enolase spiked with phosphopeptide HLADLpSK 3. b) CD-ECI spectrum of the LC-separated 3 in ToF MS mode. (* denotes a co-eluting peak corresponding to IATAIEK peptide; ▼ denotes the phosphorylated fragment ion at y2).