3PME:
reference: Crystal structure of the receptor binding domain of the botulinum C-D mosaic neurotoxin reveals potential roles of lysines 1118 and 1136 in membrane interactions., Zhang Y, Buchko GW, Qin L, Robinson H, Varnum SM, Biochem Biophys Res Commun. 2011 Jan 7;404(1):407-12. Epub 2010 Dec 3. PMID: 21130733

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