Evidence map›Paper›PMID 23221554›Full record

ArticleJournal of virology2013

N-terminal phosphorylation sites of herpes simplex virus 1 ICP0 differentially regulate its activities and enhance viral replication.

Heba H Mostafa, Thornton W Thompson, David J Davido

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

20 citing papers in PubMed, 22 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 1 institution in 1 country.

Heba H MostafaDepartment of Molecular Biosciences, University of Kansas, Lawrence, Kansas, USA.
Thornton W Thompson
David J Davido
University of Kansas · US

Funding

Viral and host responses to HSV infectionR01AI072357 · NIAID · UNIVERSITY OF KANSAS LAWRENCE · PI DAVIDO, DAVID J · 2007 to 2010
$1.3M
NIAID NIH HHS R01 AI072357NIAID NIH HHS R01AI72357
6 · The paper itself

Abstract

The herpes simplex virus 1 (HSV-1) infected cell protein 0 (ICP0) is an immediate-early phosphoprotein that transactivates viral gene expression. Evidence suggests that phosphorylation regulates the functions of ICP0, and three regions (termed regions I, II, and III) in the protein are known to be phosphorylated. Mutation of the putative phosphorylation sites within region I, termed Phos 1, which lies in the N-terminal portion of ICP0, impairs the E3 ubiquitin (Ub) ligase and ND10-disrupting activities of ICP0 in cell culture and diminishes viral replication. To identify the specific phosphorylation site(s) or residues responsible for the phenotypes observed with Phos 1, individual residues within region I were mutated to alanine (S224A, T226A, T231A, and T232A) and one double mutant S224A/T226A was constructed. Tissue culture studies demonstrated that the S224A, S224A/T226A, T231A, and T232A mutants were unable to dissociate the cellular protein PML from ND10 and that the S224/T226A mutant was defective in its ability to dissociate the cellular protein Sp100 from ND10. Additionally, the transactivation activity of ICP0 was impaired in the S224A and S224A/T226A mutants. The S224A and S224A/T226A mutant forms were more stable than wild-type ICP0, suggesting that their ability to autoubiquitinate was limited. Moreover, one ICP0 ubiquitination target, USP-7, was also more stable after infection with these two mutants. Lastly, the replication of the S224A and S224A/T226A mutant viruses was reduced in cell culture and in vivo. Overall, our data suggest that specific phosphorylation sites within region I differentially regulate the activities of ICP0, which are required for efficient viral replication.

Indexed as

Host-Pathogen InteractionsProtein Processing, Post-TranslationalVirus ReplicationAmino Acid SubstitutionAnimalsAntigens, NuclearAutoantigensCell LineHerpesvirus 1, HumanHumansImmediate-Early ProteinsMutagenesis, Site-DirectedMutant ProteinsNuclear ProteinsPhosphorylationPromyelocytic Leukemia ProteinAntigens, NuclearAutoantigensCALCOCO2 protein, humanImmediate-Early ProteinsMutant ProteinsNuclear ProteinsPML protein, humanPromyelocytic Leukemia ProteinSP100 protein, humanTranscription FactorsTumor Suppressor ProteinsUbiquitin-Protein LigasesVmw110 protein, Human herpesvirus 1

Identifiers

PMID23221554
PMCPMC3571471
OpenAlexW2106743346

What OpenQuestion holds

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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.