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. Author manuscript; available in PMC: 2015 May 11.
Published in final edited form as: Chem Commun (Camb). 2014 May 11;50(36):4659–4673. doi: 10.1039/c4cc00660g

Figure 3.

Figure 3

Metabolic oligosaccharide engineering can be employed to covalently deliver therapeutics or diagnostics to bacterial glycans. First, bacterial cells metabolically process an unnatural sugar that contains a bioorthogonal chemical reporter (X) into cellular glycans. In a second step, the chemical reporter undergoes covalent elaboration with a reactive partner (Y) conjugated to a therapeutic or diagnostic to fo6rm a covalent adduct.