Evidence map›Paper›PMID 8389913›Full record

ArticleJournal of virology1993

Functional interaction of nuclear factors EF-C, HNF-4, and RXR alpha with hepatitis B virus enhancer I.

A D Garcia, P Ostapchuk, P Hearing

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of virology, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed
3.6field-weighted citation impact, top 6% 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

53 citing papers in PubMed, 106 citations in OpenAlex.

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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

3 authors at 2 institutions in 1 country.

A D GarciaDepartment of Microbiology, State University of New York, Stony Brook 11794.
P Ostapchuk
P Hearing
Stony Brook University · USState University of New York · US

Funding

HEPATITIS B VIRUS ENHANCER REGIONR01AI029427 · NIAID · STATE UNIVERSITY NEW YORK STONY BROOK · PI HEARING, PATRICK · 1990 to 1994
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ANALYSIS OF A POLYOMAVIRUS ENHANCER &BINDING PROTEINR01CA044673 · NCI · STATE UNIVERSITY NEW YORK STONY BROOK · PI HEARING, PATRICK · 1987 to 1991
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ANALYSIS OF A POLYOMAVIRUS ENHANCER &BINDING PROTEINR55CA044673 · NCI · STATE UNIVERSITY NEW YORK STONY BROOK · PI HEARING, PATRICK · 1992 to 1992
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NCI NIH HHS CA44673NIAID NIH HHS AI29427
6 · The paper itself

Abstract

Hepatitis B virus (HBV) enhancer I contains cis-acting elements that are both sufficient and essential for liver-specific enhancer function. The EF-C binding site was previously shown to be a key element in enhancer I. EF-C binding activity is evident in hepatic and nonhepatic cells. Although the EF-C binding site is required for efficient HBV enhancer I function, the EF-C site does not possess intrinsic enhancer activity when assayed in the absence of flanking elements. We have defined a novel region in HBV enhancer I, termed the GB element, that is adjacent to and functions in conjunction with the EF-C binding site. The GB element and EF-C site confer interdependent liver-specific enhancer activity in the absence of flanking HBV enhancer sequences. The nucleotide sequence of the GB element is similar to sequences of the DNA binding sites for members of the steroid receptor superfamily. Among these proteins, we demonstrate that HNF-4, RXR (retinoid X receptor), and COUP-TF bind to the GB element in vitro. HNF-4 transactivates a promoter linked to a multimerized GB/EF-C domain via the GB element in vivo in a manner that is dependent on the integrity of the adjacent EF-C binding site. RXR alpha also transactivates promoter expression via the GB element in vivo in response to retinoic acid but in a largely EF-C-independent manner. Finally, we show that COUP-TF antagonizes the activity of the GB element in human liver cells.

Indexed as

Enhancer Elements, GeneticGene Expression Regulation, ViralPhosphoproteinsReceptors, Retinoic AcidBase SequenceBinding SitesCOUP Transcription Factor IDNA-Binding ProteinsDNA Mutational AnalysisHepatitis B virusHepatocyte Nuclear Factor 4Molecular Sequence DataNuclear ProteinsOligodeoxyribonucleotidesReceptors, Cell SurfaceRetinoid X ReceptorsCOUP Transcription Factor IDNA-Binding ProteinsHepatocyte Nuclear Factor 4Nuclear ProteinsOligodeoxyribonucleotidesPhosphoproteinsReceptors, Cell SurfaceReceptors, Retinoic AcidRetinoid X ReceptorsTranscription Factors

Identifiers

PMID8389913
PMCPMC237761
OpenAlexW1546139579

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.