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. 2004 Dec;15(4):257–264.

FIGURE 4.

FIGURE 4

Chinese hamster ovary phosphorylation of NSATCHSEDS(PO4) DLEIDALEGPR. Collison-induced dissociation spectrum, in information-dependant acquisition mode of the parent ion at m/z 1198.5 is shown, representing amino acids 287–301 plus one phosphate. The y13 through y16 ions confirm the presence of a dehydroalanine resulting from loss of phosphate upon fragmentation at position 296.