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Investigation of 6AzGlcNAc metabolism. (A) The indicated monosaccharides (40 mM concentration) were tested as substrates for purified GalK2 in vitro. (B) Proposed mechanism by which AGM1 directly phosphorylates 6AzGlcNAc in the presence of GlcNAc-6-phosphate. (C) Kinetic constants for the enzymatic production of UDP sugar donors from GlcNAc-1-phosphate and 6AzGlcNAc-1-phosphate by the enzyme UDP-N-acetylhexosamine pyrophosphorylase (AGX1).
