Evidence map›Paper›PMID 27569754›Full record

ArticleCell chemical biology2016

Structural Insights into Mitochondrial Calcium Uniporter Regulation by Divalent Cations.

Samuel K Lee, Santhanam Shanmughapriya, Mac C Y Mok, Zhiwei Dong, Dhanendra Tomar, Edmund Carvalho, Sudarsan Rajan, Murray S Junop, Muniswamy Madesh, Peter B Stathopulos

Open access · bronzeAbstract read
In one paragraph

Article in Cell chemical biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 2 pooled it
5.4field-weighted citation impact, top 4% 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

62 citing papers in PubMed, 2 syntheses or guidelines pooled it, 86 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Article
  4. Mechanistic Modeling of MCUx Gatekeeping, CaAmerican journal of physiology. Cell physiology · 2026
    Article
  5. Article
  6. Review
  7. Mitochondrial CaCommunications biology · 2026
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Review
  16. MRS2 missense variation at Asp216 abrogates inhibitory MgProtein science : a publication of the Protein Society · 2024
    Article
  17. Article
  18. Article
  19. Magnesium (MgCurrent pharmaceutical design · 2024
    Review
  20. Article

2 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.

Samuel K Lee *Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1.
Santhanam Shanmughapriya *Department of Molecular Genetics and Molecular Biochemistry, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA, 19140.
Mac C Y MokDepartment of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada, L8S 4K1.
Zhiwei DongDepartment of Molecular Genetics and Molecular Biochemistry, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA, 19140.
Dhanendra TomarDepartment of Molecular Genetics and Molecular Biochemistry, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA, 19140.
Edmund CarvalhoDepartment of Molecular Genetics and Molecular Biochemistry, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA, 19140.
Sudarsan RajanDepartment of Molecular Genetics and Molecular Biochemistry, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA, 19140.
Murray S JunopDepartment of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1.
Muniswamy MadeshDepartment of Molecular Genetics and Molecular Biochemistry, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, USA, 19140.
Peter B StathopulosDepartment of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada, N6A 5C1.
Temple University · USWestern University · CAMcMaster University · CA

Funding

Project 3 Dysregulation of metabolic communication of oligodendrocytes and neurons by cocaine and TatP01DA037830 · NIDA · TEMPLE UNIV OF THE COMMONWEALTH · PI KHALILI, KAMEL · 2015 to 2019
$7.4M
Coordination of Pathophysiologic Endothelial Cell Signaling by ROSR01HL086699 · NHLBI · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI MUNISWAMY, MADESH · 2008 to 2018
$4.3M
Spectral revelations of mitochondrial Ca2+ flux interactomeR01GM109882 · NIGMS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI MUNISWAMY, MADESH · 2014 to 2022
$3.3M
Inhibition of MCUR1-MCU mediated mitochondrial Ca2+ uptake prevents I/R injuryR01HL119306 · NHLBI · TEMPLE UNIV OF THE COMMONWEALTH · PI MUNISWAMY, MADESH · 2014 to 2017
$1.6M
Multiphoton Confocal Microscopy for Biomedical ResearchS10RR027327 · NCRR · TEMPLE UNIV OF THE COMMONWEALTH · PI MUNISWAMY, MADESH · 2010 to 2010
$500k
NCRR NIH HHS S10 RR027327NHLBI NIH HHS R01 HL086699NHLBI NIH HHS R01 HL119306NIDA NIH HHS P01 DA037830NIGMS NIH HHS R01 GM109882
6 · The paper itself

Abstract

Calcium (Ca(2+)) flux into the matrix is tightly controlled by the mitochondrial Ca(2+) uniporter (MCU) due to vital roles in cell death and bioenergetics. However, the precise atomic mechanisms of MCU regulation remain unclear. Here, we solved the crystal structure of the N-terminal matrix domain of human MCU, revealing a β-grasp-like fold with a cluster of negatively charged residues that interacts with divalent cations. Binding of Ca(2+) or Mg(2+) destabilizes and shifts the self-association equilibrium of the domain toward monomer. Mutational disruption of the acidic face weakens oligomerization of the isolated matrix domain and full-length human protein similar to cation binding and markedly decreases MCU activity. Moreover, mitochondrial Mg(2+) loading or blockade of mitochondrial Ca(2+) extrusion suppresses MCU Ca(2+)-uptake rates. Collectively, our data reveal that the β-grasp-like matrix region harbors an MCU-regulating acidic patch that inhibits human MCU activity in response to Mg(2+) and Ca(2+) binding.

Indexed as

CalciumCalcium ChannelsCations, DivalentHumansMagnesiumModels, MolecularProtein ConformationCalciumCalcium ChannelsCations, DivalentMagnesiummitochondrial calcium uniporterautoinhibitioncalcium bindingmagnesium bindingMCU-regulating acidic patchmitochondrial calcium uniporteroligomerizationstabilitystructure

Identifiers

PMID27569754
PMCPMC5035232
OpenAlexW2513627011

What OpenQuestion holds

Textmetadata
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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.