Characterization of Model Peptide Adducts with Reactive Metabolites of Naphthalene by Mass Spectrometry
Figure 3
MS/MS for adduction of peptide DYKDDDDK by 1,4-NQ (m/z 1171.4366).
3A shows the possible y- and b-ions associated with MS fragmentation of the peptide adducted on lysine. 3B shows the MS/MS spectrum of the adducted peptide acquired with labeled ions for designation. Adducted ions are in bold. Fragmentation patterns were the same when samples were incubated at both pH 7.4 and 8.5.