3N7L
Crystal structure of botulinum neurotoxin serotype D/C VPI 5993 binding domain
Summary for 3N7L
Entry DOI | 10.2210/pdb3n7l/pdb |
Related | 3N7J 3N7K 3N7M |
Descriptor | Neurotoxin, SULFATE ION, GLYCEROL, ... (4 entities in total) |
Functional Keywords | botulinum neurotoxin, hcr/d-sa, ganglioside binding loop, toxin |
Biological source | Clostridium botulinum |
Total number of polymer chains | 1 |
Total formula weight | 49878.92 |
Authors | Fu, Z.,Karalewitz, A.,Kroken, A.,Baldwin, M.R.,Barbieri, J.T.,Kim, J.-J.P. (deposition date: 2010-05-27, release date: 2010-09-08, Last modification date: 2023-09-06) |
Primary citation | Karalewitz, A.P.,Kroken, A.R.,Fu, Z.,Baldwin, M.R.,Kim, J.J.,Barbieri, J.T. Identification of a Unique Ganglioside Binding Loop within Botulinum Neurotoxins C and D-SA . Biochemistry, 49:8117-8126, 2010 Cited by PubMed Abstract: The botulinum neurotoxins (BoNTs) are the most potent protein toxins for humans. There are seven serotypes of BoNTs (A-G) based on a lack of cross antiserum neutralization. BoNTs utilize gangliosides as components of the host receptors for binding and entry into neurons. Members of BoNT/C and BoNT/D serotypes include mosaic toxins that are organized in D/C and C/D toxins. One D/C mosaic toxin, BoNT/D-South Africa (BoNT/D-SA), was not fully neutralized by immunization with BoNT serotype C or D, which stimulated this study. Here the crystal structures of the receptor binding domains of BoNT/C, BoNT/D, and BoNT/D-SA are presented. Biochemical and cell binding studies show that BoNT/C and BoNT/D-SA possess unique mechanisms for ganglioside binding. These studies provide new information about how the BoNTs can enter host cells as well as a basis for understanding the immunological diversity of these neurotoxins. PubMed: 20731382DOI: 10.1021/bi100865f PDB entries with the same primary citation |
Experimental method | X-RAY DIFFRACTION (2 Å) |
Structure validation
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