3OBT:
reference: Botulinum neurotoxin serotype D attacks neurons via two carbohydrate binding sites in a ganglioside dependent manner., Strotmeier J, Lee K, Volker AK, Mahrhold S, Zong Y, Zeiser J, Zhou J, Pich A, Bigalke H, Binz T, Rummel A, Jin R, Biochem J. 2010 Aug 12. PMID: 20704566

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