Evidence map›Paper›PMID 30625229›Full record

ArticlePLoS pathogens2019

Recruitment of Vps34 PI3K and enrichment of PI3P phosphoinositide in the viral replication compartment is crucial for replication of a positive-strand RNA virus.

Zhike Feng, Kai Xu, Nikolay Kovalev, Peter D Nagy

Abstract read
In one paragraph

Article in PLoS pathogens, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
–field-weighted citation impact
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

36 citing papers in PubMed.

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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

4 authors.

Zhike FengDepartment of Plant Pathology, University of Kentucky, Lexington, Kentucky, United States of America.
Kai XuDepartment of Plant Pathology, University of Kentucky, Lexington, Kentucky, United States of America.ORCID 0000-0003-2036-3469
Nikolay KovalevDepartment of Plant Pathology, University of Kentucky, Lexington, Kentucky, United States of America.ORCID 0000-0001-9599-8966
Peter D NagyDepartment of Plant Pathology, University of Kentucky, Lexington, Kentucky, United States of America.ORCID 0000-0003-4164-1237

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tombusviruses depend on subversions of multiple host factors and retarget cellular pathways to support viral replication. In this work, we demonstrate that tomato bushy stunt virus (TBSV) and the closely-related carnation Italian ringspot virus (CIRV) recruit the cellular Vps34 phosphatidylinositol 3-kinase (PI3K) into the large viral replication compartment. The kinase function of Vps34 is critical for TBSV replication, suggesting that PI(3)P phosphoinositide is utilized by TBSV for building of the replication compartment. We also observed increased expression of Vps34 and the higher abundance of PI(3)P in the presence of the tombusviral replication proteins, which likely leads to more efficient tombusvirus replication. Accordingly, overexpression of PI(3)P phosphatase in yeast or plants inhibited TBSV replication on the peroxisomal membranes and CIRV replication on the mitochondrial membranes. Moreover, the purified PI(3)P phosphatase reduced TBSV replicase assembly in a cell-free system. Detection of PI(3)P with antibody or a bioprobe revealed the enrichment of PI(3)P in the replication compartment. Vps34 is directly recruited into the replication compartment through interaction with p33 replication protein. Gene deletion analysis in surrogate yeast host unraveled that TBSV replication requires the vesicle transport function of Vps34. In the absence of Vps34, TBSV cannot efficiently recruit the Rab5-positive early endosomes, which provide PE-rich membranes for membrane biogenesis of the TBSV replication compartment. We found that Vps34 and PI(3)P needed for the stability of the p33 replication protein, which is degraded by the 26S proteasome when PI(3)P abundance was decreased by an inhibitor of Vps34. In summary, Vps34 and PI(3)P are needed for providing the optimal microenvironment for the replication of the peroxisomal TBSV and the mitochondrial CIRV.

Indexed as

Class III Phosphatidylinositol 3-KinasesMitochondriaMitochondrial MembranesPeroxisomesPhosphatidylinositol PhosphatesPhosphatidylinositolsRNA-Dependent RNA PolymeraseRNA, ViralRNA VirusesTombusvirusViral ProteinsVirus ReplicationClass III Phosphatidylinositol 3-Kinasesphosphatidylinositol 3-phosphatePhosphatidylinositol PhosphatesPhosphatidylinositolsRNA-Dependent RNA PolymeraseRNA, ViralViral Proteins

Identifiers

PMID30625229
PMCPMC6342326

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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.