Evidence map›Paper›PMID 12692245›Full record

ArticleJournal of virology2003

Functional surfaces of the human immunodeficiency virus type 1 capsid protein.

Uta K von Schwedler, Kirsten M Stray, Jennifer E Garrus, Wesley I Sundquist

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 292 papers.

0numbers the graph read from it
0cells of the map it votes in
292citing papers in PubMed
5.1field-weighted citation impact, top 3% 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

292 citing papers in PubMed, 418 citations in OpenAlex.

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  9. Transient Occupancy and Pore Dynamics: IP6 Behavior in HIV-1The journal of physical chemistry. B · 2026
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232 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

4 authors at 1 institution in 1 country.

Uta K von SchwedlerDepartment of Biochemistry, University of Utah, Salt Lake City 84132, USA.
Kirsten M Stray
Jennifer E Garrus
Wesley I Sundquist
University of Utah · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The human immunodeficiency virus type 1 initially assembles and buds as an immature particle that is organized by the viral Gag polyprotein. Gag is then proteolyzed to produce the smaller capsid protein CA, which forms the central conical capsid that surrounds the RNA genome in the mature, infectious virus. To define CA surfaces that function at different stages of the viral life cycle, a total of 48 different alanine-scanning surface mutations in CA were tested for their effects on Gag protein expression, processing, particle production and morphology, capsid assembly, and infectivity. The 27 detrimental mutations fall into three classes: 13 mutations significantly diminished or altered particle production, 9 mutations failed to assemble normal capsids, and 5 mutations supported normal viral assembly but were nevertheless reduced more than 20-fold in infectivity. The locations of the assembly-defective mutations implicate three different CA surfaces in immature particle assembly: one surface encompasses helices 4 to 6 in the CA N-terminal domain (NTD), a second surrounds the crystallographically defined CA dimer interface in the C-terminal domain (CTD), and a third surrounds the loop preceding helix 8 at the base of the CTD. Mature capsid formation required a distinct surface encompassing helices 1 to 3 in the NTD, in good agreement with a recent structural model for the viral capsid. Finally, the identification of replication-defective mutants with normal viral assembly phenotypes indicates that CA also performs important nonstructural functions at early stages of the viral life cycle.

Indexed as

Amino Acid SequenceCapsidCapsid ProteinsCell LineGene Products, gagHeLa CellsHIV-1HumansMicroscopy, ElectronModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedVirionVirus AssemblyCapsid ProteinsGene Products, gag

Identifiers

PMID12692245
PMCPMC153941
OpenAlexW2156696460

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.