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



Creese and Cooper


Page 13


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(a)

Figure 1.

ECD mass spectra of doubly-charged ions of four synthetic peptides
(APLS1FRGS2LPKS3YVK). ECD of (
a) unmodified peptide at cathode potentials of (left)
-3.34 V (standard) and (right) -13.34 V (cathode potential which gave the greatest sequence
coverage) (6 scans); (
b) Ser1 phosphopeptide at cathode potentials of (left) -3.34 V and (right)
14.34 V (4 scans); (
c) Ser2 phosphopeptide at cathode potentials of (left) -3.34 V and (right)
-14.34 V (7 scans); (
d) Ser3 phosphopeptide at cathode potentials of (left) -3.34 V and (right)
-14.84 V (9 scans).


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




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