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High resolution mass spectrometry improves the identification of peptides in the fragmentation spectra (MS2) of the tryptic peptide 187LNQYDLLGQTVDSGIVQSSTGEYVVMoxidationTTHFHLK219 (m/z = 924.962+4). Signals from peptide fragmentation are assigned using both enhanced mass accuracy and charge state determination. Accurate charge state assignment from isotopic resolution is illustrated in bottom spectra.
