Evidence map›Paper›PMID 7683422›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1993

Expression of functional hepatitis B virus polymerase in yeast reveals it to be the sole viral protein required for correct initiation of reverse transcription.

J E Tavis, D Ganem

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing 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

41 citing papers in PubMed.

  1. Article
  2. Article
  3. The Molecular and Structural Basis of HBV-resistance to Nucleos(t)ide Analogs.Journal of clinical and translational hepatology · 2014
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. High-level production of a functional recombinant hepatitis B virus polymerase in insect cells with a baculovirus expression system.Journal of Huazhong University of Science and Technology. Medical sciences = Hua zhong ke ji da xue xue bao. Yi xue Ying De wen ban = Huazhong keji daxue xuebao. Yixue Yingdewen ban · 2007
    Article
  9. Article
  10. Article
  11. Viral strategies of translation initiation: ribosomal shunt and reinitiation.Progress in nucleic acid research and molecular biology · 2002
    Review
  12. Article
  13. Article
  14. Article
  15. Hepatitis B virus biology.Microbiology and molecular biology reviews : MMBR · 2000
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  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

2 authors.

J E TavisHoward Hughes Medical Institute, University of California, San Francisco 94143-0502.
D Ganem

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Replication of hepatitis B viruses proceeds by reverse transcription of an RNA intermediate, a reaction catalyzed by the virus-encoded polymerase (P protein). The reaction product is a partially duplex DNA whose (-)-strand is covalently linked to the P protein. Efforts to understand the mechanism of the reaction have been severely retarded by an inability to express functional polymerase outside of viral particles. Here we report the successful expression of enzymatically active polymerase in yeast cells, by fusing the P gene to coding sequences of the retrotransposon Ty1. The enzyme initiates correctly on viral RNA in yeast cells in vivo, producing nascent DNA chains covalently linked to protein, exactly as found in virus-infected cells. Replication complexes isolated from these yeast are enzymatically active in vitro, synthesizing DNA in a reaction that is actinomycin D-resistant but sensitive to RNase pretreatment. These results indicate that P protein is the sole viral protein required for the correct priming of reverse transcription and establish a tractable system for the biochemical dissection of the reaction.

Indexed as

DNA ReplicationDactinomycinDNA Transposable ElementsDNA, ViralFrameshift MutationHepatitis B virusPlasmidsRecombinant ProteinsRestriction MappingRNA-Directed DNA PolymeraseRNA, ViralSaccharomyces cerevisiaeVirus ReplicationDactinomycinDNA Transposable ElementsDNA, ViralRecombinant ProteinsRNA-Directed DNA PolymeraseRNA, Viral

Identifiers

PMID7683422
PMCPMC46455

What OpenQuestion holds

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Registered trials

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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.