4KRR:
reference: Structural Studies of Wnts and Identification of an LRP6 Binding Site., Chu ML, Ahn VE, Choi HJ, Daniels DL, Nusse R, Weis WI, Structure. 2013 Jul 2;21(7):1235-42. doi: 10.1016/j.str.2013.05.006. Epub 2013, Jun 20. PMID: 23791946

This OCA Structure page
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