Evidence map›Paper›PMID 32332168›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

The structure of helical lipoprotein lipase reveals an unexpected twist in lipase storage.

Kathryn H Gunn, Benjamin S Roberts, Fengbin Wang, Joshua D Strauss, Mario J Borgnia, Edward H Egelman, Saskia B Neher

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

21 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  6. Lipoprotein lipase as a target for obesity/diabetes related cardiovascular disease.Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · 2024
    Review
  7. Review
  8. Article
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  13. A protein of capillary endothelial cells, GPIHBP1, is crucial for plasma triglyceride metabolism.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  14. Article
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  16. Current Diagnosis and Management of Primary Chylomicronemia.Journal of atherosclerosis and thrombosis · 2021
    Review
  17. Article
  18. Lipoprotein Lipase and Its Regulators: An Unfolding Story.Trends in endocrinology and metabolism: TEM · 2021
    Review
  19. Review
  20. Article
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

7 authors at 3 institutions in 1 country.

Kathryn H GunnDepartment of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599.
Benjamin S RobertsDepartment of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599.
Fengbin WangDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22908.
Joshua D StraussGenome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC 27709.
Mario J BorgniaGenome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC 27709.ORCID 0000-0001-9159-1413
Edward H EgelmanDepartment of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA 22908.ORCID 0000-0003-4844-5212
Saskia B NeherDepartment of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599; neher@email.unc.edu.ORCID 0000-0003-4165-6674
University of North Carolina at Chapel Hill · USNational Institutes of Health · USUniversity of Virginia · US

Funding

NIEHS Cryo-EM Core FacilityZICES103326 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI BORGNIA, MARIO · 2017 to 2025
$17.0M
Cryo-EM of Helical Protein and Nucleoprotein Polymers at Near Atomic ResolutionR35GM122510 · NIGMS · UNIVERSITY OF VIRGINIA · PI EDWARD H. EGELMAN · 2017 to 2026
$7.3M
Investigation of the Molecular Mechanisms of Lipoprotein Lipase InhibitorsR01HL125654 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI NEHER, SASKIA · 2015 to 2024
$3.8M
Intramural NIH HHS ZIC ES103326NHLBI NIH HHS R01 HL125654NIGMS NIH HHS R35 GM122510
6 · The paper itself

Abstract

Lipases are enzymes necessary for the proper distribution and utilization of lipids in the human body. Lipoprotein lipase (LPL) is active in capillaries, where it plays a crucial role in preventing dyslipidemia by hydrolyzing triglycerides from packaged lipoproteins. Thirty years ago, the existence of a condensed and inactive LPL oligomer was proposed. Although recent work has shed light on the structure of the LPL monomer, the inactive oligomer remained opaque. Here we present a cryo-EM reconstruction of a helical LPL oligomer at 3.8-Å resolution. Helix formation is concentration-dependent, and helices are composed of inactive dihedral LPL dimers. Heparin binding stabilizes LPL helices, and the presence of substrate triggers helix disassembly. Superresolution fluorescent microscopy of endogenous LPL revealed that LPL adopts a filament-like distribution in vesicles. Mutation of one of the helical LPL interaction interfaces causes loss of the filament-like distribution. Taken together, this suggests that LPL is condensed into its inactive helical form for storage in intracellular vesicles.

Indexed as

AnimalsCattleCryoelectron MicroscopyHEK293 CellsHumansHydrolysisLipoprotein LipaseMiceModels, MolecularMutationNIH 3T3 CellsProtein ConformationSubstrate SpecificityTriglyceridesLipoprotein LipaseTriglyceridescryo-electron microscopyhelical reconstructionlipoprotein lipase

Identifiers

PMID32332168
PMCPMC7229681
OpenAlexW3020066171

What OpenQuestion holds

Textmetadata
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.