Method ECD / ETD fragmentation of the phosphopeptides in modern tandem mass spectrometry

The paper presents features and the application of peptides fragmentation method in tandem mass spectrometry, in particular fragmentation techniques CID, ECD and ETD, and their combinations. Mechanism of fragmentation, sample preparation methods and sample introduction in relation to the method of ECD / ETD are analyzed. The possibility to use common proteomic databases for solving phosphoproteomic tasks is shown. The conclusions about the effectiveness of CID / ETD fragmentation methods combination to expand amino acid sequence restore capacity of the phosphopeptides are made.