5EDV:
reference: Structure of a HOIP/E2~ubiquitin complex reveals RBR E3 ligase mechanism and regulation., Lechtenberg BC, Rajput A, Sanishvili R, Dobaczewska MK, Ware CF, Mace PD, Riedl SJ, Nature. 2016 Jan 28;529(7587):546-50. doi: 10.1038/nature16511. Epub 2016 Jan 20. PMID: 26789245

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