Evidence map›Paper›PMID 30478053›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Structure and architecture of immature and mature murine leukemia virus capsids.

Kun Qu, Bärbel Glass, Michal Doležal, Florian K M Schur, Brice Murciano, Alan Rein, Michaela Rumlová, Tomáš Ruml, Hans-Georg Kräusslich, John A G Briggs

Open access · greenAbstract readComparative Study
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.

0numbers the graph read from it
0cells of the map it votes in
84citing 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

84 citing papers in PubMed, 88 citations in OpenAlex.

  1. Article
  2. Retroviruses use different IPNature communications · 2026
    Article
  3. bioRxiv : the preprint server for biology · 2026
    Article
  4. Review
  5. Capsid flexibility during Ty1 virus-like particle assembly.bioRxiv : the preprint server for biology · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Structure and organization of full-length epidermal growth factor receptor in extracellular vesicles by cryo-electron tomography.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Mechanism-guided engineering of a minimal biological particle for genome editing.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  16. Article
  17. Article
  18. Targeted gene delivery systems for T-cell engineering.Cellular oncology (Dordrecht, Netherlands) · 2024
    Review
  19. Article
  20. Article

24 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 6 institutions in 4 countries.

Kun QuStructural and Computational Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany.
Bärbel GlassDepartment of Infectious Diseases, Virology, Universitätsklinikum Heidelberg, 69120 Heidelberg, Germany.
Michal DoležalInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, 16610 Prague 6, Czech Republic.
Florian K M SchurStructural and Computational Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany.
Brice MurcianoStructural and Computational Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany.
Alan ReinHIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702.
Michaela RumlováDepartment of Biotechnology, University of Chemistry and Technology, 16628 Prague 6, Czech Republic.
Tomáš RumlDepartment of Biochemistry and Microbiology, University of Chemistry and Technology, 16628 Prague 6, Czech Republic.
Hans-Georg KräusslichMolecular Medicine Partnership Unit, European Molecular Biology Laboratory and Universitätsklinikum Heidelberg, 69117 Heidelberg, Germany.
John A G BriggsStructural and Computational Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany; jbriggs@mrc-lmb.cam.ac.uk.ORCID 0000-0003-3990-6910
European Molecular Biology Laboratory · DECzech Academy of Sciences, Institute of Organic Chemistry and Biochemistry · CZHeidelberg University · DEInstitute of Science and Technology Austria · ATNational Cancer Institute · USUniversity of Chemistry and Technology, Prague · CZ

Funding

Retrovirus Assembly and MaturationZIABC010511 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI REIN, ALAN · 2009 to 2025
$9.4M
Medical Research Council MC_UP_1201/16
6 · The paper itself

Abstract

Retroviruses assemble and bud from infected cells in an immature form and require proteolytic maturation for infectivity. The CA (capsid) domains of the Gag polyproteins assemble a protein lattice as a truncated sphere in the immature virion. Proteolytic cleavage of Gag induces dramatic structural rearrangements; a subset of cleaved CA subsequently assembles into the mature core, whose architecture varies among retroviruses. Murine leukemia virus (MLV) is the prototypical γ-retrovirus and serves as the basis of retroviral vectors, but the structure of the MLV CA layer is unknown. Here we have combined X-ray crystallography with cryoelectron tomography to determine the structures of immature and mature MLV CA layers within authentic viral particles. This reveals the structural changes associated with maturation, and, by comparison with HIV-1, uncovers conserved and variable features. In contrast to HIV-1, most MLV CA is used for assembly of the mature core, which adopts variable, multilayered morphologies and does not form a closed structure. Unlike in HIV-1, there is similarity between protein-protein interfaces in the immature MLV CA layer and those in the mature CA layer, and structural maturation of MLV could be achieved through domain rotations that largely maintain hexameric interactions. Nevertheless, the dramatic architectural change on maturation indicates that extensive disassembly and reassembly are required for mature core growth. The core morphology suggests that wrapping of the genome in CA sheets may be sufficient to protect the MLV ribonucleoprotein during cell entry.

Indexed as

Amino Acid SequenceAnimalsCapsidCapsid ProteinsCryoelectron MicroscopyCrystallography, X-RayElectron Microscope TomographyGene Products, gagHEK293 CellsHIV-1HumansLeukemia Virus, MurineMiceModels, MolecularProtein DomainsProtein Structure, QuaternaryCapsid ProteinsGene Products, gagcapsidcryoelectron tomographymaturationmurine leukemia virusretrovirus

Identifiers

PMID30478053
PMCPMC6294937
OpenAlexW2902356452

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.