3UEL:
reference: Structure of mammalian poly(ADP-ribose) glycohydrolase reveals a flexible tyrosine clasp as a substrate-binding element., Kim IK, Kiefer JR, Ho CM, Stegeman RA, Classen S, Tainer JA, Ellenberger T, Nat Struct Mol Biol. 2012 May 20;19(6):653-6. doi: 10.1038/nsmb.2305. PMID: 22609859

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