Evidence map›Paper›PMID 12502829›Full record

ArticleJournal of virology2003

Human immunodeficiency virus type 1 Vif is efficiently packaged into virions during productive but not chronic infection.

Sandra Kao, Hirofumi Akari, Mohammad A Khan, Markus Dettenhofer, Xiao-Fang Yu, Klaus Strebel

Abstract readComparative Study
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 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing 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

36 citing papers in PubMed.

  1. Review
  2. Article
  3. Role of the Ubiquitin Proteasome System (UPS) in the HIV-1 Life Cycle.International journal of molecular sciences · 2019
    Review
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Protein intrinsic disorder as a flexible armor and a weapon of HIV-1.Cellular and molecular life sciences : CMLS · 2012
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. 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

6 authors.

Sandra KaoLaboratory of Molecular Microbiology, Viral Biochemistry Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892-0460, USA.
Hirofumi Akari
Mohammad A Khan
Markus Dettenhofer
Xiao-Fang Yu
Klaus Strebel

Funding

Molecular Analysis Of Retroviral Genes And Their ProductsZIAAI000669 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI STREBEL, KLAUS · 2009 to 2025
$25.2M
Molecular Analysis Of Retroviral Genes &Their ProductsZ01AI000669 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI STREBEL, KLAUS · 1993 to 2008
$852k
6 · The paper itself

Abstract

Packaging of the human immunodeficiency virus type 1 Vif protein into virus particles is mediated through an interaction with viral genomic RNA and results in the association of Vif with the nucleoprotein complex. Despite the specificity of this process, calculations of the amount of Vif packaged have produced vastly different results. Here, we compared the efficiency of packaging of Vif into virions derived from acutely and chronically infected H9 cells. We found that Vif was efficiently packaged into virions from acutely infected cells (60 to 100 copies per virion), while packaging into virions from chronically infected H9 cells was near the limit of detection (four to six copies of Vif per virion). Superinfection by an exogenous Vif-defective virus did not rescue packaging of endogenous Vif expressed in the chronically infected culture. In contrast, exogenous Vif expressed by superinfection of wild-type virus was readily packaged (30 to 40 copies per virion). Biochemical analyses suggest that the differences in the relative packaging efficiencies were not due to gross differences in the steady-state distribution of Vif in chronically or acutely infected cells but are likely due to differences in the relative rates of de novo synthesis of Vif. Despite its low packaging efficiency, endogenously expressed Vif was sufficient to direct the production of viruses with almost wild-type infectivity. The results from our study provide novel insights into the biochemical properties of Vif and offer an explanation for the reported differences regarding Vif packaging.

Indexed as

VirionVirus AssemblyAmino Acid SequenceBase SequenceDNA PrimersGene Products, vifHeLa CellsHIV-1HumansMolecular Sequence DataMutationSequence Homology, Amino Acidvif Gene Products, Human Immunodeficiency VirusDNA PrimersGene Products, vifvif Gene Products, Human Immunodeficiency Virus

Identifiers

PMID12502829
PMCPMC140813

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.