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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2013 Mar 5;24(5):733–743. doi: 10.1007/s13361-013-0590-4

Figure 1.

Figure 1

Crosslinking [ubiquitin +7H]7+ with [sulfo-EGS-H]−. (a) nESI mass spectrum ubiquitin. (b) Product ion spectrum of the ion/ion reaction between [ubiquitin +7H]7+ and [sulfo-EGS-H]−. (c) CID product ion spectrum of the [M+6H+sulfo-EGS]6+ ion. (d) CID product ion spectrum of the [M+6H+sulfo-EGS - sulfo-NHS]6+ ion (i.e. ions indicated as –sulfo-NHS) from (c).