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1H NMR analysis of the product of C. jejuni UNGM reaction with UDP-GalpNAc. A, region of the 1H NMR spectrum of the starting material UDP-GalpNAc. B, same region of the 1H NMR spectrum for the UNGM reaction product. The observed chemical shifts and coupling constants are consistent for UDP-GalNAc in the furanose ring form.
