Download MendeleyStructural analysis of botulinum neurotoxin type G receptor binding .
Schmitt, J., Karalewitz, A., Benefield, D.A., Mushrush, D.J., Pruitt, R.N., Spiller, B.W., Barbieri, J.T., Lacy, D.B.(2010) Biochemistry 49: 5200-5205
- PubMed: 20507178
- DOI: https://doi.org/10.1021/bi100412v
- Primary Citation of Related Structures:
3MPP - PubMed Abstract:
Botulinum neurotoxin (BoNT) binds peripheral neurons at the neuromuscular junction through a dual-receptor mechanism that includes interactions with ganglioside and protein receptors. The receptor identities vary depending on BoNT serotype (A-G). BoNT/B and BoNT/G bind the luminal domains of synaptotagmin I and II, homologous synaptic vesicle proteins. We observe conditions under which BoNT/B binds both Syt isoforms, but BoNT/G binds only SytI. Both serotypes bind ganglioside G(T1b). The BoNT/G receptor-binding domain crystal structure provides a context for examining these binding interactions and a platform for understanding the physiological relevance of different Syt receptor isoforms in vivo.
Organizational Affiliation:
Department of Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA.
