6AY2:
reference: Discovery of Peptidomimetic Antibody-Drug Conjugate Linkers with Enhanced Protease Specificity., Wei B, Gunzner-Toste J, Yao H, Wang T, Wang J, Xu Z, Chen J, Wai J, Nonomiya J, Tsai SP, Chuh J, Kozak KR, Liu Y, Yu SF, Lau J, Li G, Phillips GD, Leipold D, Kamath A, Su D, Xu K, Eigenbrot C, Steinbacher S, Ohri R, Raab H, Staben LR, Zhao G, Flygare JA, Pillow TH, Verma V, Safina B, J Med Chem. 2017 Dec 21. doi: 10.1021/acs.jmedchem.7b01430. PMID: 29227683

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