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Abstract© 2019, The Author(s). Epsilon toxin (Etx), a potent pore forming toxin (PFT) produced by Clostridium perfringens, is responsible for the pathogenesis of enterotoxaemia of ruminants and has been suggested to play a role in multiple sclerosis in humans. Etx is a member of the aerolysin family of β-PFTs (aβ-PFTs). While the Etx soluble monomer structure was solved in 2004, Etx pore structure has remained elusive due to the difficulty of isolating the pore complex. Here we show the cryo-electron microscopy structure of Etx pore assembled on the membrane of susceptible cells. The pore structure explains important mutant phenotypes and suggests that the double β-barrel, a common feature of the aβ-PFTs, may be an important structural element in driving efficient pore formation. These insights provide the framework for the development of novel therapeutics to prevent human and animal infections, and are relevant for nano-biotechnology applications.
CitationSavva, C.G., Clark, A.R., Naylor, C.E. et al. (2019) The pore structure of Clostridium perfringens epsilon toxin. Nature Communications, 10, 2641. https://doi.org/10.1038/s41467-019-10645-8
PublisherSpringer Science and Business Media LLC
PubMed ID31201325 (pubmed)
Description© 2019 The Authors. Published by Springer. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.1038/s41467-019-10645-8
SponsorsThis work was supported by grants from the UK Medical Research Council (MC-A021-53019) and the Wellcome Trust (WT089618MA).
Except where otherwise noted, this item's license is described as Licence for published version: Creative Commons Attribution 4.0 International
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