Evidence map›Paper›PMID 31101807›Full record

ArticleNature communications2019

Structure of the human frataxin-bound iron-sulfur cluster assembly complex provides insight into its activation mechanism.

Nicholas G Fox, Xiaodi Yu, Xidong Feng, Henry J Bailey, Alain Martelli, Joseph F Nabhan, Claire Strain-Damerell, Christine Bulawa, Wyatt W Yue, Seungil Han

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed
10.1field-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

97 citing papers in PubMed, 162 citations in OpenAlex.

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  11. Development of an AAV-based gene therapy for the ocular phenotype of Friedreich's ataxia.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
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  17. Evaluation of Mitochondrial Complex 1 Density with [Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2025
    Article
  18. Article
  19. Review
  20. Review

37 more citing papers are in PubMed but not listed here.

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

10 authors at 3 institutions in 2 countries.

Nicholas G FoxStructural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK.
Xiaodi YuDiscovery Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT, 06340, USA.ORCID http://orcid.org/0000-0001-7520-0646
Xidong FengDiscovery Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT, 06340, USA.
Henry J BaileyStructural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK.
Alain MartelliRare Disease Research Unit, Worldwide Research and Development, Pfizer Inc., 610 Main Street, Cambridge, MA, 02139, USA.
Joseph F NabhanRare Disease Research Unit, Worldwide Research and Development, Pfizer Inc., 610 Main Street, Cambridge, MA, 02139, USA.
Claire Strain-DamerellStructural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK.
Christine BulawaRare Disease Research Unit, Worldwide Research and Development, Pfizer Inc., 610 Main Street, Cambridge, MA, 02139, USA.
Wyatt W YueStructural Genomics Consortium, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK. wyatt.yue@sgc.ox.ac.uk.ORCID http://orcid.org/0000-0001-6959-6007
Seungil HanDiscovery Sciences, Worldwide Research and Development, Pfizer Inc., Eastern Point Road, Groton, CT, 06340, USA. seungil.han@pfizer.com.ORCID http://orcid.org/0000-0002-1070-3880
Pfizer (United States) · USUniversity of Oxford · GBMerck & Co., Inc., Rahway, NJ, USA (United States) · US

Funding

Wellcome Trust
6 · The paper itself

Abstract

The core machinery for de novo biosynthesis of iron-sulfur clusters (ISC), located in the mitochondria matrix, is a five-protein complex containing the cysteine desulfurase NFS1 that is activated by frataxin (FXN), scaffold protein ISCU, accessory protein ISD11, and acyl-carrier protein ACP. Deficiency in FXN leads to the loss-of-function neurodegenerative disorder Friedreich's ataxia (FRDA). Here the 3.2 Å resolution cryo-electron microscopy structure of the FXN-bound active human complex, containing two copies of the NFS1-ISD11-ACP-ISCU-FXN hetero-pentamer, delineates the interactions of FXN with other component proteins of the complex. FXN binds at the interface of two NFS1 and one ISCU subunits, modifying the local environment of a bound zinc ion that would otherwise inhibit NFS1 activity in complexes without FXN. Our structure reveals how FXN facilitates ISC production through stabilizing key loop conformations of NFS1 and ISCU at the protein-protein interfaces, and suggests how FRDA clinical mutations affect complex formation and FXN activation.

Indexed as

Carbon-Sulfur LyasesCryoelectron MicroscopyFrataxinFriedreich AtaxiaIronIron-Binding ProteinsIron-Sulfur ProteinsMitochondriaModels, MolecularRecombinant ProteinsSulfurZincCarbon-Sulfur LyasesFrataxinIronIron-Binding ProteinsIron-Sulfur ProteinsISCU protein, humanNFS1 protein, humanRecombinant ProteinsSulfurZinc

Identifiers

PMID31101807
PMCPMC6525205
OpenAlexW2917361793

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.