3U30:
reference: Engineering and structural characterization of a linear polyubiquitin-specific antibody., Matsumoto ML, Dong KC, Yu C, Phu L, Gao X, Hannoush RN, Hymowitz SG, Kirkpatrick DS, Dixit VM, Kelley RF, J Mol Biol. 2012 May 4;418(3-4):134-44. doi: 10.1016/j.jmb.2011.12.053. Epub 2011, Dec 29. PMID: 22227388

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