General Structure Information 2y5b UBB structure of usp21 in complex with linear diubiquitin-aldehyde 2.7Å AUTH Y.YE,M.AKUTSU,F.REYES-TURCU,R.I.ENCHEV,K.D.WILKINSON,AUTH 2 D.KOMANDERTITL POLYUBIQUITIN BINDING AND CROSS-REACTIVITY IN THE USPTITL 2 DOMAIN DEUBIQUITINASE USP21.REF EMBO REP. V. 12 350 2011REFN ISSN 1469-221XPMID 21399617DOI 10.1038/EMBOR.2011.17 Variant Set Distributions Mapped Variants