Evidence map›Paper›PMID 19244336›Full record

ArticleJournal of virology2009

The Epstein-Barr virus (EBV) deubiquitinating enzyme BPLF1 reduces EBV ribonucleotide reductase activity.

Christopher B Whitehurst, Shunbin Ning, Gretchen L Bentz, Florent Dufour, Edward Gershburg, Julia Shackelford, Yves Langelier, Joseph S Pagano

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

51 citing papers in PubMed, 73 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

8 authors at 5 institutions in 3 countries.

Christopher B WhitehurstDepartments of Medicine, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
Shunbin Ning
Gretchen L Bentz
Florent Dufour
Edward Gershburg
Julia Shackelford
Yves Langelier
Joseph S Pagano
Bipar · FRCentre Hospitalier de l’Université de Montréal · CAHôpital Notre-Dame · CASouthern Illinois University School of Medicine · USUniversity of North Carolina at Chapel Hill · US

Funding

Integrated Training in Cancer Model SystemsT32CA009156 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI DER, CHANNING J. · 1985 to 2020
$19.7M
New EBV Therapies for treating malignanciesR01HL064851 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI PAGANO, JOSEPH S · 2000 to 2009
$2.5M
NCI NIH HHS CA09156NCI NIH HHS T32 CA009156NHLBI NIH HHS HL64851-06NHLBI NIH HHS R01 HL064851
6 · The paper itself

Abstract

A newly discovered virally encoded deubiquitinating enzyme (DUB) is strictly conserved across the Herpesviridae. Epstein-Barr virus (EBV) BPLF1 encodes a tegument protein (3,149 amino acids) that exhibits deubiquitinating (DUB) activity that is lost upon mutation of the active-site cysteine. However, targets for the herpesviral DUBs have remained elusive. To investigate a predicted interaction between EBV BPLF1 and EBV ribonucleotide reductase (RR), a functional clone of the first 246 N-terminal amino acids of BPLF1 (BPLF1 1-246) was constructed. Immunoprecipitation verified an interaction between the small subunit of the viral RR2 and BPLF1 proteins. In addition, the large subunit (RR1) of the RR appeared to be ubiquitinated both in vivo and in vitro; however, ubiquitinated forms of the small subunit, RR2, were not detected. Ubiquitination of RR1 requires the expression of both subunits of the RR complex. Furthermore, coexpression of RR1 and RR2 with BPLF1 1-246 abolishes ubiquitination of RR1. EBV RR1, RR2, and BPLF1 1-246 colocalized to the cytoplasm in HEK 293T cells. Finally, expression of enzymatically active BPLF1 1-246 decreased RR activity, whereas a nonfunctional active-site mutant (BPLF1 C61S) had no effect. These results indicate that the EBV deubiquitinating enzyme interacts with, deubiquitinates, and influences the activity of the EBV RR. This is the first verified protein target of the EBV deubiquitinating enzyme.

Indexed as

Cell LineCytoplasmEnzyme ActivationGenome, ViralHerpesvirus 4, HumanHumansProtein SubunitsRecombinant ProteinsRibonucleotide ReductasesRNA InterferenceRNA, MessengerUbiquitinationViral Regulatory and Accessory ProteinsBPLF1 protein, Epstein-Barr virusProtein SubunitsRecombinant ProteinsRibonucleotide ReductasesRNA, MessengerViral Regulatory and Accessory Proteins

Identifiers

PMID19244336
PMCPMC2668490
OpenAlexW2107509795

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.