Cited by 307HIV Research and TreatmentHIV/AIDS drug development and treatmentT-cell and Retrovirus Studies

Assembly Properties of the Human Immunodeficiency Virus Type 1 CA Protein

Open access
Ganser-Pornillos, Barbie K., von Schwedler, Uta K., Stray, Kirsten M., Aiken, Christopher, Sundquist, Wesley I.·2004·Journal of Virology

Abstract

During retroviral maturation, the CA protein oligomerizes to form a closed capsid that surrounds the viral genome. We have previously identified a series of deleterious surface mutations within human immunodeficiency virus type 1 (HIV-1) CA that alter infectivity, replication, and assembly in vivo. For this study, 27 recombinant CA proteins harboring 34 different mutations were tested for the ability to assemble into helical cylinders in vitro. These cylinders are composed of CA hexamers and are structural models for the mature viral capsid. Mutations that diminished CA assembly clustered within helices 1 and 2 in the N-terminal domain of CA and within the crystallographically defined dimer interface in the CA C-terminal domain. These mutations demonstrate the importance of these regions for CA cylinder production and, by analogy, mature capsid assembly. One CA mutant (R18A) assembled into cylinders, cones, and spheres. We suggest that these capsid shapes occur because the R18A mutation alters the frequency at which pentamers are incorporated into the hexagonal lattice. The fact that a single CA protein can simultaneously form all three known retroviral capsid morphologies supports the idea that these structures are organized on similar lattices and differ only in the distribution of 12 pentamers that allow them to close. In further support of this model, we demonstrate that the considerable morphological variation seen for conical HIV-1 capsids can be recapitulated in idealized capsid models by altering the distribution of pentamers.

Integrity signals

Registry

Crossref · 10.1128/jvi.78.5.2545-2552.2004

Cites

59 of 59 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The cores are typically conical in HIV (5 pentamers at the tip and 7 at the base), tubular in M-PMV (6 pentamers at each end), and polyhedral in RSV and MLV (12 pentamers homogenously distributed).

    “The cores are typically conical in HIV (5 pentamers at the tip and 7 at the base), tubular in M-PMV (6 pentamers at each end), and polyhedral in RSV and MLV (12 pentamers homogenously distributed).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Ganser-Pornillos, B. K., von Schwedler, U. K., Stray, K. M., Aiken, C., & Sundquist, W. I.
Affiliations
  • Department of Biochemistry, University of Utah, Salt Lake City, Utah 84132
  • University of Utah (US)
  • Vanderbilt University (US)
Venue
Journal of Virology
Published
2004-03
Volume
78
Issue
5
Pages
2545-2552
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W2135035609
Cited by
302
References
59
Citations by year
2026: 5 · 2025: 6 · 2024: 9 · 2023: 5 · 2022: 8 · 2021: 8 · 2020: 12 · 2019: 8 · 2018: 13 · 2017: 10 · 2016: 16 · 2015: 14 · 2014: 12 · 2013: 29 · 2012: 23
FWCI
6.24
Type
journal article
Language
en
Open access
Locations
  • Journal of Virology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Health Sciences › Medicine › Infectious Diseases › HIV/AIDS drug development and treatment
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and Retrovirus Studies
Keywords
HIV-1, viral capsid assembly, capsid morphology, surface mutations, pentamer, dimer interface, N-terminal domain, capsid lattice
MeSH terms
Models, Molecular, Mutation, Phenotype, Protein Binding, Solubility, HIV-1, Protein Structure, Tertiary, Virus Assembly, Protein Structure, Quaternary, Cyclophilin A, Capsid Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review