Evidence map›Paper›PMID 26671256›Full record

ArticleNature communications2015

Structural analysis of haemoglobin binding by HpuA from the Neisseriaceae family.

Chi T Wong, Yingqi Xu, Akshari Gupta, James A Garnett, Steve J Matthews, Stephen A Hare

Abstract read
In one paragraph

Article in Nature communications, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
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

19 citing papers in PubMed.

  1. Review
  2. Molecular basis of hemoglobin binding and heme removal inProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. The Shr receptor fromProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  4. Article
  5. Pirates of the haemoglobin.Microbial cell (Graz, Austria) · 2022
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. TheThe Journal of biological chemistry · 2018
    Article
  12. Article
  13. Article
  14. Article
  15. Biological Functions of the Secretome ofFrontiers in cellular and infection microbiology · 2017
    Review
  16. Article
  17. Article
  18. Heme Synthesis and Acquisition in Bacterial Pathogens.Journal of molecular biology · 2016
    Review
  19. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Chi T WongDepartment of Life Sciences, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
Yingqi XuDepartment of Life Sciences, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
Akshari GuptaDepartment of Life Sciences, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
James A GarnettDepartment of Life Sciences, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
Steve J MatthewsDepartment of Life Sciences, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.
Stephen A HareDepartment of Life Sciences, Imperial College London, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.

Funding

Medical Research Council G1001664Medical Research Council G1100332Medical Research Council MR/J006874/1Wellcome Trust 100280Wellcome Trust 104933
6 · The paper itself

Abstract

The Neisseriaceae family of bacteria causes a range of diseases including meningitis, septicaemia, gonorrhoea and endocarditis, and extracts haem from haemoglobin as an important iron source within the iron-limited environment of its human host. Herein we report crystal structures of apo- and haemoglobin-bound HpuA, an essential component of this haem import system. The interface involves long loops on the bacterial receptor that present hydrophobic side chains for packing against the surface of haemoglobin. Interestingly, our structural and biochemical analyses of Kingella denitrificans and Neisseria gonorrhoeae HpuA mutants, although validating the interactions observed in the crystal structure, show how Neisseriaceae have the fascinating ability to diversify functional sequences and yet retain the haemoglobin binding function. Our results present the first description of HpuA's role in direct binding of haemoglobin.

Indexed as

Bacterial ProteinsCrystallizationHemoglobinsHumansKingellaNeisseriaceaeNeisseria gonorrhoeaeProtein BindingProtein Structure, TertiaryReceptors, Cell SurfaceBacterial ProteinsHemoglobinsHpuA protein, NeisseriaReceptors, Cell Surface

Identifiers

PMID26671256
PMCPMC4703857

What OpenQuestion holds

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Registered trials

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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.