Evidence map›Paper›PMID 23918378›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2013

Structure of N-linked oligosaccharides attached to chlorovirus PBCV-1 major capsid protein reveals unusual class of complex N-glycans.

Cristina De Castro, Antonio Molinaro, Francesco Piacente, James R Gurnon, Luisa Sturiale, Angelo Palmigiano, Rosa Lanzetta, Michelangelo Parrilli, Domenico Garozzo, Michela G Tonetti and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.5field-weighted citation impact, top 6% 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

28 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Giant viruses of themicroLife · 2022
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Chloroviruses.Viruses · 2019
    Review
  16. Nucleocytoplasmic O-glycosylation in protists.Current opinion in structural biology · 2019
    Review
  17. TheThe Journal of biological chemistry · 2019
    Article
  18. Article
  19. The rare sugarThe Journal of biological chemistry · 2017
    Article
  20. Review
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

11 authors at 3 institutions in 2 countries.

Cristina De CastroDepartment of Chemical Sciences, University of Napoli Federico II, 80126 Naples, Italy.
Antonio Molinaro
Francesco Piacente
James R Gurnon
Luisa Sturiale
Angelo Palmigiano
Rosa Lanzetta
Michelangelo Parrilli
Domenico Garozzo
Michela G Tonetti
James L Van Etten
University of Naples Federico II · ITUniversity of Genoa · ITUniversity of Nebraska–Lincoln · US

Funding

VIRAL SHUTOFF OF HOST TRANSCRIPTION--PBCV-1 INFECTEDP20RR015635 · NCRR · UNIVERSITY OF NEBRASKA LINCOLN · PI ZHENG, JIALIN CHARLES · 2000 to 2009
$22.1M
NCRR NIH HHS P20 RR015635NCRR NIH HHS P20-RR15635
6 · The paper itself

Abstract

The major capsid protein Vp54 from the prototype chlorovirus Paramecium bursaria chlorella virus 1 (PBCV-1) contains four Asn-linked glycans. The structure of the four N-linked oligosaccharides and the type of substitution at each glycosylation site was determined by chemical, spectroscopic, and spectrometric analyses. Vp54 glycosylation is unusual in many ways, including: (i) unlike most viruses, PBCV-1 encodes most, if not all, of the machinery to glycosylate its major capsid protein; (ii) the glycans are attached to the protein by a β-glucose linkage; (iii) the Asn-linked glycans are not located in a typical N-X-(T/S) consensus site; and (iv) the process probably occurs in the cytoplasm. The four glycoforms share a common core structure, and the differences are related to the nonstoichiometric presence of two monosaccharides. The most abundant glycoform consists of nine neutral monosaccharide residues, organized in a highly branched fashion. Among the most distinctive features of the glycoforms are (i) a dimethylated rhamnose as the capping residue of the main chain, (ii) a hyperbranched fucose unit, and (iii) two rhamnose residues with opposite absolute configurations. These glycoforms differ from what has been reported so far in the three domains of life. Considering that chloroviruses and other members of the family Phycodnaviridae may have a long evolutionary history, we suggest that the chlorovirus glycosylation pathway is ancient, possibly existing before the development of the endoplasmic reticulum and Golgi pathway, and involves still unexplored mechanisms.

Indexed as

Capsid ProteinsChlorellaDNA LigasesGas Chromatography-Mass SpectrometryMagnetic Resonance SpectroscopyMonosaccharidesOligosaccharidesParameciumSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationViral ProteinsCapsid ProteinsChlorella virus DNA ligaseDNA LigasesMonosaccharidesOligosaccharidesViral Proteinscytoplasmic glycosylationglucose/asparagine linkageglycobiologyglycopeptidevirus-encoded glycosylation

Identifiers

PMID23918378
PMCPMC3752267
OpenAlexW2040556244

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.