Evidence map›Paper›PMID 19297464›Full record

ArticleJournal of virology2009

Role of N-linked glycosylation for sindbis virus infection and replication in vertebrate and invertebrate systems.

Ronald L Knight, Kimberly L W Schultz, Rebekah J Kent, Meera Venkatesan, Diane E Griffin

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 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
3.3field-weighted citation impact, top 9% 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

34 citing papers in PubMed, 55 citations in OpenAlex.

  1. Review
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  3. Article
  4. Review
  5. Article
  6. Current perspectives on alphavirus encapsidation, assembly and budding.Frontiers in cellular and infection microbiology · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
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  15. Review
  16. Alphavirus Virulence Determinants.Pathogens (Basel, Switzerland) · 2021
    Review
  17. Review
  18. Article
  19. Article
  20. 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.

Ronald L KnightDepartment of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Medicine, Baltimore, Maryland 21205, USA.
Kimberly L W Schultz
Rebekah J Kent
Meera Venkatesan
Diane E Griffin
Johns Hopkins University · US

Funding

Training: Molecular & Cellular Bases of Infectious DiseasesT32AI007417 · NIAID · JOHNS HOPKINS UNIVERSITY · PI Arturo Casadevall · 1994 to 2026
$11.9M
CONTROL OF ALPHAVIRUS REPLICATION IN THE NERVOUS SYSTEMR01NS038932 · NINDS · JOHNS HOPKINS UNIVERSITY · PI GRIFFIN, DIANE E · 2001 to 2016
$4.9M
ROLE OF THE IMMUNE RESPONSE IN ACUTE VIRAL ENCEPHALITISR01NS018596 · NINDS · JOHNS HOPKINS UNIVERSITY · PI GRIFFIN, DIANE E · 1985 to 2008
$3.4M
NIAID NIH HHS T32 AI007417NINDS NIH HHS R01 NS018596NINDS NIH HHS R01 NS038932NINDS NIH HHS R01 NS18596
6 · The paper itself

Abstract

Each Sindbis virus (SINV) surface glycoprotein has two sites for N-linked glycosylation (E1 positions 139 and 245 [E1-139 and E1-245] and E2 positions 196 and 318 [E2-196 and E2-318]). Studies of SINV strain TE12 mutants with each site eliminated identified the locations of carbohydrates by cryo-electron microscopy (S. V. Pletnev et al., Cell 105:127-136, 2001). In the current study, the effects of altered glycosylation on virion infectivity, growth in cells of vertebrates and invertebrates, heparin binding, virulence in mice, and replication in mosquitoes were assessed. Particle-to-PFU ratios for E1-139 and E2-196 mutant strains were similar to that for TE12, but this ratio for the E1-245 mutant was 100-fold lower than that for TE12. Elimination of either E2 glycosylation site increased virus binding to heparin and increased replication in BHK cells. Elimination of either E1 glycosylation site had no effect on heparin binding but resulted in an approximately 10-fold decrease in virus yield from BHK cells compared to the TE12 amount. No differences in pE2 processing were detected. E2-196 and E2-318 mutants were more virulent in mice after intracerebral inoculation, while E1-139 and E1-245 mutants were less virulent. The E1-245 mutant showed impaired replication in C7/10 mosquito cells and in Culex quinquefasciatus after intrathoracic inoculation. We conclude that the increased replication and virulence of E2-196 and E2-318 mutants are primarily due to increased efficiency of binding to heparan sulfate on mammalian cells. Lack of glycosylation at E1-139 or E1-245 impairs replication in vertebrate cells, while E1-245 also severely affects replication in invertebrate cells.

Indexed as

Virus ReplicationAlphavirus InfectionsAnimalsCell LineCentral Nervous SystemCricetinaeCulexGlycosylationHeparinMutationProtein BindingSindbis VirusVirionHeparin

Identifiers

PMID19297464
PMCPMC2681937
OpenAlexW2158626794

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.