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PMC full text:
Anal Biochem. Author manuscript; available in PMC 2013 Feb 15.
Published in final edited form as:
Anal Biochem. 2012 Feb 15; 421(2): 712–718.
Published online 2011 Dec 13. doi:  10.1016/j.ab.2011.12.012

Figure 5

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Modification of peptides without cross-linking

The fragmentation spectrum of the precursor ion with 3557.60 m/z was derived from the tryptic digest of the major band of pGSN (~86kDa in Fig. 1 a) incubated with a 11.4Å spacer arm and showed fragment ion assignment for peptide H2N-IEGSNKVPVDPATYGQFYGGDSYIILYNYR-COOH. It shows a modification of the lysine residue in which the cross-linker ends with H2O indicating that this linker was unable to cross-link two lysine residues. We labeled with (arm) superscript the fragments containing the masses with linker modifications.

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