CryoEM structure of the outer membrane secretin channel pIV from the f1 filamentous bacteriophage.
CryoEM structure of the outer membrane secretin channel pIV from the f1 filamentous bacteriophage.
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DOI:
10.1038/s41467-021-26610-3
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发表时间:
2021-11-02
影响因子:
16.6
通讯作者:
Gold VAM
中科院分区:
文献类型:
--
作者:
Conners R;McLaren M;Łapińska U;Sanders K;Stone MRL;Blaskovich MAT;Pagliara S;Daum B;Rakonjac J;Gold VAM
The Ff family of filamentous bacteriophages infect gram-negative bacteria, but do not cause lysis of their host cell. Instead, new virions are extruded via the phage-encoded pIV protein, which has homology with bacterial secretins. Here, we determine the structure of pIV from the f1 filamentous bacteriophage at 2.7 Å resolution by cryo-electron microscopy, the first near-atomic structure of a phage secretin. Fifteen f1 pIV subunits assemble to form a gated channel in the bacterial outer membrane, with associated soluble domains projecting into the periplasm. We model channel opening and propose a mechanism for phage egress. By single-cell microfluidics experiments, we demonstrate the potential for secretins such as pIV to be used as adjuvants to increase the uptake and efficacy of antibiotics in bacteria. Finally, we compare the f1 pIV structure to its homologues to reveal similarities and differences between phage and bacterial secretins. New virions of Ff bacteriophages are extruded from the host cell via the channel built from phage protein pIV, homologous to bacterial secretins. Here, the authors report the structure of this channel from the f1 filamentous bacteriophage and propose its use as an adjuvant to increase the uptake and efficacy of antibiotics.
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影响因子:
3.7
作者:
Green ER;Mecsas J
通讯作者:
Mecsas J
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
4.6
作者:
Chaptal V;Delolme F;Kilburg A;Magnard S;Montigny C;Picard M;Prier C;Monticelli L;Bornert O;Agez M;Ravaud S;Orelle C;Wagner R;Jawhari A;Broutin I;Pebay-Peyroula E;Jault JM;Kaback HR;le Maire M;Falson P
通讯作者:
Falson P
影响因子:
16.6
作者:
Hu J;Xu K;Shen L;Wu Q;He G;Wang JY;Pei J;Xia J;Sfeir MY
通讯作者:
Sfeir MY
影响因子:
3.6
作者:
Daefler, S;Guilvout, I;Russel, M
通讯作者:
Russel, M