Evidence map›Paper›PMID 30996102›Full record

ArticleJournal of virology2019

Regulation of Human Cytomegalovirus Secondary Envelopment by a C-Terminal Tetralysine Motif in pUL71.

Clarissa Read, Martin Schauflinger, Dimitri Nikolaenko, Paul Walther, Jens von Einem

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.4field-weighted citation impact, top 8% 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

23 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
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  11. Host Cell Signatures of the Envelopment Site within Beta-Herpes Virions.International journal of molecular sciences · 2022
    Review
  12. Review
  13. Article
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  17. Review
  18. Article
  19. Review
  20. Quantitative Electron Microscopy to Study HCMV Morphogenesis.Methods in molecular biology (Clifton, N.J.) · 2021
    Article
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.

Clarissa Read *Institute of Virology, Ulm University Medical Center, Ulm, Germany.
Martin Schauflinger *Institute of Virology, Ulm University Medical Center, Ulm, Germany.
Dimitri NikolaenkoInstitute of Virology, Ulm University Medical Center, Ulm, Germany.
Paul WaltherCentral Facility for Electron Microscopy, Ulm University, Ulm, Germany.
Jens von EinemInstitute of Virology, Ulm University Medical Center, Ulm, Germany jens.von-einem@uniklinik-ulm.de.
Universität Ulm · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Human cytomegalovirus (HCMV) secondary envelopment requires the viral tegument protein pUL71. The lack of pUL71 results in a complex ultrastructural phenotype with increased numbers of viral capsids undergoing envelopment at the cytoplasmic virus assembly complex. Here, we report a role of the pUL71 C terminus in secondary envelopment. Mutant viruses expressing C-terminally truncated pUL71 (TB71del327-361 and TB71del348-351) exhibited an impaired secondary envelopment in transmission electron microscopy (TEM) studies. Further mutational analyses of the C terminus revealed a tetralysine motif whose mutation (TB71mutK348-351A) resulted in an envelopment defect that was undistinguishable from the defect caused by truncation of the pUL71 C terminus. Interestingly, not all morphological alterations that define the ultrastructural phenotype of a TB71stop virus were found in cells infected with the C-terminally mutated viruses. This suggests that pUL71 provides additional functions that modulate HCMV morphogenesis and are harbored elsewhere in pUL71. This is also reflected by an intermediate growth defect of the C-terminally mutated viruses compared to the growth of the TB71stop virus. Electron tomography and three-dimensional visualization of different stages of secondary envelopment in TB71mutK348-351A-infected cells showed unambiguously the formation of a bud neck. Furthermore, we provide evidence for progressive tegument formation linked to advancing grades of capsid envelopment, suggesting that tegumentation and envelopment are intertwined processes. Altogether, we identified the importance of the pUL71 C terminus and, specifically, of a positively charged tetralysine motif for HCMV secondary envelopment.

Indexed as

PolylysineCapsidCapsid ProteinsCell LineCytomegalovirusCytomegalovirus InfectionsCytoplasmHumansMutationSequence AlignmentViral ProteinsVirus AssemblyCapsid ProteinsPolylysinetetralysineViral ProteinsHCMVHuman betaherpesvirus 5secondary envelopmentTEM analysistetralysine motifUL71

Identifiers

PMID30996102
PMCPMC6580969
OpenAlexW2940225776

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.