Cryo-EM structures of LolCDE reveal the molecular mechanism of bacterial lipoprotein sorting in Escherichia coli.
Cryo-EM structures of LolCDE reveal the molecular mechanism of bacterial lipoprotein sorting in Escherichia coli.
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LOLCDE的冷冻EM结构揭示了大肠杆菌中细菌脂蛋白分选的分子机制。
DOI:
10.1371/journal.pbio.3001823
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发表时间:
2022-10
期刊:
影响因子:
9.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Bacterial lipoproteins perform a diverse array of functions including bacterial envelope biogenesis and microbe–host interactions. Lipoproteins in gram-negative bacteria are sorted to the outer membrane (OM) via the localization of lipoproteins (Lol) export pathway. The ATP-binding cassette (ABC) transporter LolCDE initiates the Lol pathway by selectively extracting and transporting lipoproteins for trafficking. Here, we report cryo-EM structures of LolCDE in apo, lipoprotein-bound, and AMPPNP-bound states at a resolution of 3.5 to 4.2 Å. Structure-based disulfide crosslinking, photo-crosslinking, and functional complementation assay verify the apo-state structure and reveal the molecular details regarding substrate selectivity and substrate entry route. Our studies snapshot 3 functional states of LolCDE in a transport cycle, providing deep insights into the mechanisms that underlie LolCDE-mediated lipoprotein sorting in E. coli. Lipoproteins in Gram-negative bacteria are sorted to the outer membrane via the Lol export pathway. The ABC transporter LolCDE initiates this pathway by selectively extracting and transporting lipoproteins for trafficking; this study provides a structural basis for the LolCDE-mediated bacterial lipoprotein sorting, with implications for novel antibiotic design against Gram-negative bacterial pathogens.
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影响因子:
4.4
作者:
Jiang, Yu;Chen, Biao;Yang, Sheng
通讯作者:
Yang, Sheng
影响因子:
64.5
作者:
Paradis-Bleau C;Markovski M;Uehara T;Lupoli TJ;Walker S;Kahne DE;Bernhardt TG
通讯作者:
Bernhardt TG
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:
11.4
作者:
Matsuyama, S;Yokota, N;Tokuda, H
通讯作者:
Tokuda, H
影响因子:
3.2
作者:
Lorenz C;Dougherty TJ;Lory S
通讯作者:
Lory S