Evidence map›Paper›PMID 7479035›Full record

ArticleNucleic acids research1995

Distinct requirements for primary sequence in the 5'- and 3'-part of a bulge in the hepatitis B virus RNA encapsidation signal revealed by a combined in vivo selection/in vitro amplification system.

A Rieger, M Nassal

Abstract read
In one paragraph

Article in Nucleic acids research, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

16 citing papers in PubMed, 46 citations in OpenAlex.

  1. Hepatitis B Virus Nucleocapsid Assembly.Journal of molecular biology · 2025
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. HIV-1 evolution: frustrating therapies, but disclosing molecular mechanisms.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2010
    Review
  9. RNA-protein interactions in hepadnavirus reverse transcription.Frontiers in bioscience (Landmark edition) · 2009
    Review
  10. Hepatitis B virus replication.World journal of gastroenterology · 2007
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. 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 at 1 institution in 1 country.

A RiegerZentrum für Molekulare Biologie, Universität Heidelberg, Germany.
M Nassal
Heidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hepatitis B virus (HBV) is a small DNA virus that replicates by reverse transcription of a terminally redundant RNA, the pregenome. Specific packaging of this transcript into viral capsids is mediated by interaction of the reverse transcriptase, P protein, with the 5'-proximal encapsidation signal epsilon, epsilon-function is correlated with the formation of a hairpin structure containing a bulge and a loop, each consisting of 6 nt. To analyse the importance of primary sequence in these regions, we have combined selection of encapsidation competent individuals from pools of randomized epsilon-sequences in transfected cells with in vitro amplification, thus bypassing the current experimental limitations of the HBV system. While no alterations of the authentic loop sequence were detectable, many different sequences were tolerated in the 3'-part of the bulge. However, at the two 5'-proximal bulge positions the wt sequence was strongly selected for, indicating that for RNA packaging close contacts between protein and the 5'- but not the 3'-part of the bulge are important. Such a bipartite organisation provides a structural basis for the recently demonstrated special role of the 3'-part of the bulge as template for the first nucleotides of (-)-strand DNA in HBV reverse transcription.

Indexed as

Nucleic Acid ConformationBase SequenceCapsidHepatitis B virusMolecular Sequence DataPlasmidsPolymerase Chain ReactionRNA-Directed DNA PolymeraseRNA, ViralSignal TransductionStructure-Activity RelationshipTransfectionRNA-Directed DNA PolymeraseRNA, Viral

Identifiers

PMID7479035
PMCPMC307309
OpenAlexW2013528230

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.