he Effect of Phosphorylation on the Electron Capture Dissociation of Peptide Ions

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Creese and Cooper

Page 17

Figure 5.

(Top) ECD mass spectra (4 scans) of doubly-charged ions of the β-casein tryptic peptide
FQSEEQQQTEDELQDK obtained at ECD cathode potentials of (a) -3.34 V (standard) and
(b) -9.34 V. (Bottom) ECD mass spectra (7 scans) of doubly-charged ions of
FQ_pSEEQQQTEDELQDK obtained at ECD cathode potentials of (c) -3.34 V (standard) and
(d) -12.84 V.

Published as: JAm SocMass Spectrom. 2008 September ; 19(9): 1263-1274.