Evidence map›Paper›PMID 19521517›Full record

ArticlePLoS pathogens2009

Zinc coordination is required for and regulates transcription activation by Epstein-Barr nuclear antigen 1.

Siddhesh Aras, Gyanendra Singh, Kenneth Johnston, Timothy Foster, Ashok Aiyar

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

26 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
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  7. Ammonia generation by tryptophan synthase drives a key genetic difference between genital and ocularProceedings of the National Academy of Sciences of the United States of America · 2019
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  17. Nucleolin is important for Epstein-Barr virus nuclear antigen 1-mediated episome binding, maintenance, and transcription.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  18. Review
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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

5 authors at 1 institution in 1 country.

Siddhesh ArasDepartment of Microbiology, Immunology & Parasitology, LSU Health Sciences Center, New Orleans, LA, USA.
Gyanendra Singh
Kenneth Johnston
Timothy Foster
Ashok Aiyar
Louisiana State University Health Sciences Center New Orleans · US

Funding

Functions of EBNA1 in replication &partitioning of EBVR01CA112564 · NCI · NORTHWESTERN UNIVERSITY · PI AIYAR, ASHOK A · 2004 to 2009
$1.2M
NCI NIH HHS R01 CA112564
6 · The paper itself

Abstract

Epstein-Barr Nuclear Antigen 1 (EBNA1) is essential for Epstein-Barr virus to immortalize naïve B-cells. Upon binding a cluster of 20 cognate binding-sites termed the family of repeats, EBNA1 transactivates promoters for EBV genes that are required for immortalization. A small domain, termed UR1, that is 25 amino-acids in length, has been identified previously as essential for EBNA1 to activate transcription. In this study, we have elucidated how UR1 contributes to EBNA1's ability to transactivate. We show that zinc is necessary for EBNA1 to activate transcription, and that UR1 coordinates zinc through a pair of essential cysteines contained within it. UR1 dimerizes upon coordinating zinc, indicating that EBNA1 contains a second dimerization interface in its amino-terminus. There is a strong correlation between UR1-mediated dimerization and EBNA1's ability to transactivate cooperatively. Point mutants of EBNA1 that disrupt zinc coordination also prevent self-association, and do not activate transcription cooperatively. Further, we demonstrate that UR1 acts as a molecular sensor that regulates the ability of EBNA1 to activate transcription in response to changes in redox and oxygen partial pressure (pO(2)). Mild oxidative stress mimicking such environmental changes decreases EBNA1-dependent transcription in a lymphoblastoid cell-line. Coincident with a reduction in EBNA1-dependent transcription, reductions are observed in EBNA2 and LMP1 protein levels. Although these changes do not affect LCL survival, treated cells accumulate in G0/G1. These findings are discussed in the context of EBV latency in body compartments that differ strikingly in their pO(2) and redox potential.

Indexed as

Transcriptional ActivationAmino Acid SequenceCell HypoxiaCell Line, TransformedCell Line, TumorData Interpretation, StatisticalEpstein-Barr Virus Nuclear AntigensGene ExpressionGene Expression ProfilingHerpesvirus 4, HumanHumansMolecular Sequence DataOxidation-ReductionOxidative StressProtein BindingProtein MultimerizationEBV-encoded nuclear antigen 1Epstein-Barr Virus Nuclear AntigensVitamin K 3Zinc

Identifiers

PMID19521517
PMCPMC2690687
OpenAlexW2090856048

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.