Evidence map›Paper›PMID 40691140›Full record

ArticleNature communications2025

Structure of human mitochondrial pyruvate carrier MPC1 and MPC2 complex.

Yingyuan Sun, Yaru Wang, Zheng Xing, Dongyu Li, Rong Wang, Baozhi Chen, Ning Zhou, Alyssa Ayala, Benjamin P Tu, Xiaofeng Qi

Abstract read
In one paragraph

Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

12 citing papers in PubMed.

  1. Review
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  6. Review
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  11. Article
  12. Subcellular Stress Markers in Epithelial Ovarian Cancer.International journal of molecular sciences · 2025
    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

10 authors.

Yingyuan Sun *Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, USA.ORCID http://orcid.org/0000-0003-3972-0235
Yaru Wang *Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Zheng Xing *Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Dongyu LiDepartment of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, USA.ORCID http://orcid.org/0000-0003-2960-509X
Rong WangDepartment of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX, USA.ORCID http://orcid.org/0000-0001-7342-5278
Baozhi ChenDepartment of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Ning ZhouDepartment of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
Alyssa AyalaDepartment of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA.ORCID http://orcid.org/0009-0000-3487-0061
Benjamin P TuDepartment of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, USA.ORCID http://orcid.org/0000-0001-5545-9183
Xiaofeng QiDepartment of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA. xiaofeng.qi@utsouthwestern.edu.ORCID http://orcid.org/0000-0001-8123-9627

Funding

Structural and Functional Investigations on Cholesterol Signaling and MetabolismR35GM149533 · NIGMS · UT SOUTHWESTERN MEDICAL CENTER · PI Xiaochun Li · 2023 to 2026
$1.9M
American Heart Association (American Heart Association, Inc.) 23POST1013018Cancer Prevention and Research Institute of Texas (Cancer Prevention Research Institute of Texas) RR230054NIGMS NIH HHS R35 GM149533U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (NIGMS) R35GM149533
6 · The paper itself

Abstract

The Mitochondrial Pyruvate Carrier (MPC) bridges cytosolic and mitochondrial metabolism by transporting pyruvate into mitochondria for ATP production and biosynthesis of various essential molecules. MPC functions as a heterodimer composed of MPC1 and MPC2 in most mammalian cells. Here, we present the cryogenic electron microscopy (cryo-EM) structures of the human MPC1-2 complex in the mitochondrial intermembrane space (IMS)-open state and the inhibitor-bound in the mitochondrial matrix-open state. Structural analysis shows that the transport channel of MPC is formed by the interaction of transmembrane helix (TM) 1 and TM2 of MPC1 with TM2 and TM1 of MPC2, respectively. UK5099, a potent MPC inhibitor, shares the same binding site with pyruvate at the matrix side of the transport channel, stabilizing MPC in its matrix-open conformation. Notably, a functional W82F mutation in MPC2 leads to the complex in an IMS-open conformation. Structural comparisons across different conformations, combined with yeast rescue assays, reveal the mechanisms of substrate binding and asymmetric conformational changes in MPC during pyruvate transport across the inner mitochondrial membrane (IMM) as well as the inhibitory mechanisms of MPC inhibitors.

Indexed as

Anion Transport ProteinsMitochondrial Membrane Transport ProteinsBinding SitesCryoelectron MicroscopyHumansMitochondriaMitochondrial MembranesModels, MolecularMonocarboxylic Acid TransportersMutationProtein ConformationPyruvic AcidSaccharomyces cerevisiaeAnion Transport ProteinsMitochondrial Membrane Transport ProteinsMonocarboxylic Acid TransportersMPC1 protein, humanMPC2 protein, humanPyruvic Acid

Identifiers

PMID40691140
PMCPMC12280002

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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.