3D0Q:
reference: Biochemical and structural insights of the early glycosylation steps in calicheamicin biosynthesis., Zhang C, Bitto E, Goff RD, Singh S, Bingman CA, Griffith BR, Albermann C, Phillips GN Jr, Thorson JS, Chem Biol. 2008 Aug;15(8):842-53. PMID: 18721755

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