5GJE:
reference: Conformational Freedom of the LRP6 Ectodomain Is Regulated by N-glycosylation and the Binding of the Wnt Antagonist Dkk1., Matoba K, Mihara E, Tamura-Kawakami K, Miyazaki N, Maeda S, Hirai H, Thompson S, Iwasaki K, Takagi J, Cell Rep. 2017 Jan 3;18(1):32-40. doi: 10.1016/j.celrep.2016.12.017. PMID: 28052259

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