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. 2005 Apr 26;387(Pt 3):695–702. doi: 10.1042/BJ20041624

Figure 3. Nano-ESI-QqTOF-MS/MS analysis of the cross-linked peptide with mass of 3552.8 Da depicted in Figure 2.

Figure 3

The sequence of the peptide is shown using the single-letter code, based on the fragmentation observed in the spectrum. The fragments in the spectra indicated two peptide segments, Q[390–410]R (Gln-390–Arg-410) and A[539–545]K (Ala-539–Lys-545), cross-linked at Lys-402/Lys-541. The peptide segments are labelled α and β respectively according to the nomenclature suggested by Schilling et al. [30]. N-terminal b ions and C-terminal y ions resulting from the amide bond cleavages are labelled.