3OGG:
reference: Structural analysis of the receptor binding domain of botulinum neurotoxin serotype D., Zhang Y, Buchko GW, Qin L, Robinson H, Varnum SM, Biochem Biophys Res Commun. 2010 Oct 29;401(4):498-503. Epub 2010 Sep 19. PMID: 20858456

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