Cryo-EM structure of the octameric pore of Clostridium perfringens β-toxin.
Cryo-EM structure of the octameric pore of Clostridium perfringens β-toxin.
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灌注梭状芽胞杆菌β-毒素的八重孔的冷冻EM结构。
DOI:
10.15252/embr.202254856
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发表时间:
2022-12-06
期刊:
影响因子:
7.7
通讯作者:
中科院分区:
文献类型:
--
作者:
Clostridium perfringens is one of the most widely distributed and successful pathogens producing an impressive arsenal of toxins. One of the most potent toxins produced is the C. perfringens β‐toxin (CPB). This toxin is the main virulence factor of type C strains. We describe the cryo‐electron microscopy (EM) structure of CPB oligomer. We show that CPB forms homo‐octameric pores like the hetero‐oligomeric pores of the bi‐component leukocidins, with important differences in the receptor binding region and the N‐terminal latch domain. Intriguingly, the octameric CPB pore complex contains a second 16‐stranded β‐barrel protrusion atop of the cap domain that is formed by the N‐termini of the eight protomers. We propose that CPB, together with the newly identified Epx toxins, is a member a new subclass of the hemolysin‐like family. In addition, we show that the β‐barrel protrusion domain can be modified without affecting the pore‐forming ability, thus making the pore particularly attractive for macromolecule sensing and nanotechnology. The cryo‐EM structure of the octameric pore of CPB will facilitate future developments in both nanotechnology and basic research. Clostridium perfringens β‐toxin (CPB) is a beta‐pore‐forming toxin of the hemolysin family and an essential virulence factor of type C strains causing fatal necrotic enteritis in animals and humans. This study reports the cryo‐electron microscopy structure of the oligomeric CPB‐pore which can facilitate future developments in both nanotechnology and basic research.
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影响因子:
3.7
作者:
Manich M;Knapp O;Gibert M;Maier E;Jolivet-Reynaud C;Geny B;Benz R;Popoff MR
通讯作者:
Popoff MR
影响因子:
64.8
作者:
Jumper J;Evans R;Pritzel A;Green T;Figurnov M;Ronneberger O;Tunyasuvunakool K;Bates R;Žídek A;Potapenko A;Bridgland A;Meyer C;Kohl SAA;Ballard AJ;Cowie A;Romera-Paredes B;Nikolov S;Jain R;Adler J;Back T;Petersen S;Reiman D;Clancy E;Zielinski M;Steinegger M;Pacholska M;Berghammer T;Bodenstein S;Silver D;Vinyals O;Senior AW;Kavukcuoglu K;Kohli P;Hassabis D
通讯作者:
Hassabis D
影响因子:
13.2
作者:
Kiu R;Hall LJ
通讯作者:
Hall LJ
影响因子:
4.8
作者:
Jayasinghe, L;Miles, G;Bayley, H
通讯作者:
Bayley, H
DOI:
10.1073/pnas.1001831107
发表时间:
2010-09-14
影响因子:
11.1
作者:
Derrington, Ian M.;Butler, Tom Z.;Gundlach, Jens H.
通讯作者:
Gundlach, Jens H.