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. Author manuscript; available in PMC: 2013 May 9.
Published in final edited form as: Biochemistry. 2011 Nov 30;50(51):11143–11161. doi: 10.1021/bi201636s

Figure 1.

Figure 1

Design of bifunctional PIPn activity-based probes. Probes consist of the binding moiety (PIPn headgroup), linked to a Y-shaped lysine linker containing both a photoaffinity group (benzophone) and a secondary tag that consisted of either fluorescein (probe 1) or an alkyne as a bioorthogonal tag (probes 2–3).