Evidence map›Paper›PMID 24990751›Full record

ArticleNature2014

Structural basis for lipopolysaccharide insertion in the bacterial outer membrane.

Shuai Qiao, Qingshan Luo, Yan Zhao, Xuejun Cai Zhang, Yihua Huang

Abstract read
PubMed Publisher
In one paragraph

Article in Nature, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 171 papers.

0numbers the graph read from it
0cells of the map it votes in
171citing papers in PubMed
10.6field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

171 citing papers in PubMed, 277 citations in OpenAlex.

  1. Article
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  4. Structures of folding intermediates on BAM show diverse substrates fold by a conserved mechanism.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  13. Small siphophage binding to an open state of the LptDE outer membrane lipopolysaccharide translocon.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  14. Article
  15. Article
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  17. Review
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111 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Shuai Qiao1] National Laboratory of Biomacromolecules, National Center of Protein Science-Beijing, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China [2] University of Chinese Academy of Sciences, Beijing 100101, China.
Qingshan Luo1] National Laboratory of Biomacromolecules, National Center of Protein Science-Beijing, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China [2] University of Chinese Academy of Sciences, Beijing 100101, China.
Yan Zhao1] National Laboratory of Biomacromolecules, National Center of Protein Science-Beijing, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China [2] School of Life Sciences, University of Science and Technology of China, Hefei 230027, Anhui, China.
Xuejun Cai ZhangNational Laboratory of Biomacromolecules, National Center of Protein Science-Beijing, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Yihua HuangNational Laboratory of Biomacromolecules, National Center of Protein Science-Beijing, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
Chinese Academy of Sciences · CNInstitute of Biophysics · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

One of the fundamental properties of biological membranes is the asymmetric distribution of membrane lipids. In Gram-negative bacteria, the outer leaflet of the outer membrane is composed predominantly of lipopolysaccharides (LPS). The export of LPS requires seven essential lipopolysaccharide transport (Lpt) proteins to move LPS from the inner membrane, through the periplasm to the surface. Of the seven Lpt proteins, the LptD-LptE complex is responsible for inserting LPS into the external leaflet of the outer membrane. Here we report the crystal structure of the ∼110-kilodalton membrane protein complex LptD-LptE from Shigella flexneri at 2.4 Å resolution. The structure reveals an unprecedented two-protein plug-and-barrel architecture with LptE embedded into a 26-stranded β-barrel formed by LptD. Importantly, the secondary structures of the first two β-strands are distorted by two proline residues, weakening their interactions with neighbouring β-strands and creating a potential portal on the barrel wall that could allow lateral diffusion of LPS into the outer membrane. The crystal structure of the LptD-LptE complex opens the door to new antibiotic strategies targeting the bacterial outer membrane.

Indexed as

Bacterial Outer Membrane ProteinsBiological TransportCell MembraneCrystallography, X-RayLipopolysaccharidesModels, MolecularMultiprotein ComplexesProtein BindingProtein Structure, SecondaryShigella flexneriBacterial Outer Membrane ProteinsLipopolysaccharidesMultiprotein Complexes

Identifiers

PMID24990751
OpenAlexW1972963835

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.