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. Author manuscript; available in PMC: 2018 Aug 18.
Published in final edited form as: Methods Enzymol. 2017 Aug 18;597:83–141. doi: 10.1016/bs.mie.2017.06.029

Figure 2.

Figure 2

The customized PURE system, in which methionine is omitted and HPG is added, decodes AUG codons to HPG rather than methionine, producing alkynyl peptides. The alkynyl groups on peptides are conjugated with Man9-azide sugars through CuAAC click chemistry to form glycopeptides.