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. Author manuscript; available in PMC: 2017 Sep 8.
Published in final edited form as: Methods Enzymol. 2016 Jun 24;580:303–332. doi: 10.1016/bs.mie.2016.05.035

Fig. 5.

Fig. 5

Bis-alkylation of peptide 2 using the mxy linker, forming cyclic peptide 2-mxy. MALDI mass spectrometry of peptide 2 and the reaction mixture after 60 min are shown at the right.