Evidence map›Paper›PMID 25482433›Full record

ArticleCell host & microbe2015

Structural conservation despite huge sequence diversity allows EPCR binding by the PfEMP1 family implicated in severe childhood malaria.

Clinton K Y Lau, Louise Turner, Jakob S Jespersen, Edward D Lowe, Bent Petersen, Christian W Wang, Jens E V Petersen, John Lusingu, Thor G Theander, Thomas Lavstsen and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Cell host & microbe, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
123citing papers in PubMed, 2 pooled it
16.4field-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

123 citing papers in PubMed, 2 syntheses or guidelines pooled it, 194 citations in OpenAlex.

  1. Meta-Analysis of Human Antibodies AgainstFrontiers in immunology · 2022
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  10. Diamonds in the rif: Alignment-free comparative genomics analysis reveals strain-transcendent Plasmodium falciparum antigens amidst extensive genetic diversity.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2025
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63 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 3 countries.

Clinton K Y LauDepartment of Biochemistry, University of Oxford, South Parks Road, OX1 3QU Oxford, UK.
Louise TurnerCentre for Medical Parasitology, Department of International Health, Immunology & Microbiology, University of Copenhagen and Department of Infectious Diseases, Rigshospitalet, 1017 Copenhagen, Denmark.
Jakob S JespersenCentre for Medical Parasitology, Department of International Health, Immunology & Microbiology, University of Copenhagen and Department of Infectious Diseases, Rigshospitalet, 1017 Copenhagen, Denmark.
Edward D LoweDepartment of Biochemistry, University of Oxford, South Parks Road, OX1 3QU Oxford, UK.
Bent PetersenCenter for Biological Sequence Analysis, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark.
Christian W WangCentre for Medical Parasitology, Department of International Health, Immunology & Microbiology, University of Copenhagen and Department of Infectious Diseases, Rigshospitalet, 1017 Copenhagen, Denmark.
Jens E V PetersenCentre for Medical Parasitology, Department of International Health, Immunology & Microbiology, University of Copenhagen and Department of Infectious Diseases, Rigshospitalet, 1017 Copenhagen, Denmark.
John LusinguNational Institute for Medical Research, Tanga, 2448 Ocean Road, P.O. Box 9653, Dar es Salaan, Tanzania.
Thor G TheanderCentre for Medical Parasitology, Department of International Health, Immunology & Microbiology, University of Copenhagen and Department of Infectious Diseases, Rigshospitalet, 1017 Copenhagen, Denmark.
Thomas LavstsenCentre for Medical Parasitology, Department of International Health, Immunology & Microbiology, University of Copenhagen and Department of Infectious Diseases, Rigshospitalet, 1017 Copenhagen, Denmark. Electronic address: thomasl@sund.ku.dk.
Matthew K HigginsDepartment of Biochemistry, University of Oxford, South Parks Road, OX1 3QU Oxford, UK. Electronic address: matthew.higgins@bioch.ox.ac.uk.
University of Copenhagen · DKUniversity of Oxford · GBNational Institute for Medical Research · TZTechnical University of Denmark · DK

Funding

Medical Research CouncilWellcome Trust 101020
6 · The paper itself

Abstract

The PfEMP1 family of surface proteins is central for Plasmodium falciparum virulence and must retain the ability to bind to host receptors while also diversifying to aid immune evasion. The interaction between CIDRα1 domains of PfEMP1 and endothelial protein C receptor (EPCR) is associated with severe childhood malaria. We combine crystal structures of CIDRα1:EPCR complexes with analysis of 885 CIDRα1 sequences, showing that the EPCR-binding surfaces of CIDRα1 domains are conserved in shape and bonding potential, despite dramatic sequence diversity. Additionally, these domains mimic features of the natural EPCR ligand and can block this ligand interaction. Using peptides corresponding to the EPCR-binding region, antibodies can be purified from individuals in malaria-endemic regions that block EPCR binding of diverse CIDRα1 variants. This highlights the extent to which such a surface protein family can diversify while maintaining ligand-binding capacity and identifies features that should be mimicked in immunogens to prevent EPCR binding.

Indexed as

Genetic VariationHost-Pathogen InteractionsAdolescentAntibodies, ProtozoanAntigens, CDChildChild, PreschoolCrystallography, X-RayDNA Mutational AnalysisEndothelial Protein C ReceptorFemaleHumansMalariaMalePlasmodium falciparumProtein BindingAntibodies, ProtozoanAntigens, CDEndothelial Protein C Receptorerythrocyte membrane protein 1, Plasmodium falciparumPROCR protein, humanProtozoan ProteinsReceptors, Cell Surface

Identifiers

PMID25482433
PMCPMC4297295
OpenAlexW1978734850

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.