1FU7:
reference: Kinetic and crystallographic studies of glucopyranose spirohydantoin and glucopyranosylamine analogs inhibitors of glycogen phosphorylase., Watson KA, Chrysina ED, Tsitsanou KE, Zographos SE, Archontis G, Fleet GW, Oikonomakos NG, Proteins. 2005 Dec 1;61(4):966-83. PMID: 16222658

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