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. Author manuscript; available in PMC: 2015 Sep 24.
Published in final edited form as: Org Biomol Chem. 2015 Sep 23;13(38):9793–9807. doi: 10.1039/c5ob01410g

Figure 1.

Figure 1

Representation of the detection of a DSSO (1) interlinked peptide in MS1 and its fragmentation in MS2. The four-peak pattern in MS2 results from fragmentation on both sides of the sulfoxide. Subsequent elimination of water is usually observed with the sulfenic acid derivatives.