3V64:
reference: Structural basis of agrin-LRP4-MuSK signaling., Zong Y, Zhang B, Gu S, Lee K, Zhou J, Yao G, Figueiredo D, Perry K, Mei L, Jin R, Genes Dev. 2012 Feb 1;26(3):247-58. doi: 10.1101/gad.180885.111. PMID: 22302937

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