Evidence map›Paper›PMID 19783771›Full record

ArticleEukaryotic cell2010

Suggestive evidence for Darwinian Selection against asparagine-linked glycans of Plasmodium falciparum and Toxoplasma gondii.

G Guy Bushkin, Daniel M Ratner, Jike Cui, Sulagna Banerjee, Manoj T Duraisingh, Cameron V Jennings, Jeffrey D Dvorin, Marc-Jan Gubbels, Seth D Robertson, Martin Steffen and 3 more

Open access · diamondAbstract read
In one paragraph

Article in Eukaryotic cell, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
2.5field-weighted citation impact, top 12% 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

67 citing papers in PubMed, 101 citations in OpenAlex.

  1. Review
  2. Investigation of carbohydrate-based molecules ofFrontiers in veterinary science · 2026
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  7. Life (Basel, Switzerland) · 2023
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  8. Glycosylation Analysis of Feline Small Intestine FollowingAnimals : an open access journal from MDPI · 2022
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  9. Article
  10. SialylatedJournal of extracellular biology · 2022
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  11. Article
  12. Review
  13. ExploringFrontiers in immunology · 2022
    Article
  14. Frontiers in cellular and infection microbiology · 2022
    Review
  15. Compounds targeting GPI biosynthesis orComputational and structural biotechnology journal · 2022
    Article
  16. Article
  17. Article
  18. Pathogens (Basel, Switzerland) · 2021
    Article
  19. Review
  20. Unveiling the Sugary Secrets ofFrontiers in microbiology · 2021
    Review

7 more citing papers are in PubMed but not listed here.

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

13 authors at 4 institutions in 1 country.

G Guy BushkinDepartment of Molecular and Cell Biology, Boston University Goldman School of Dental Medicine, Boston, MA 02118, USA.
Daniel M Ratner
Jike Cui
Sulagna Banerjee
Manoj T Duraisingh
Cameron V Jennings
Jeffrey D Dvorin
Marc-Jan Gubbels
Seth D Robertson
Martin Steffen
Barry R O'Keefe
Phillips W Robbins
John Samuelson
Boston University · USHarvard University · USBoston College · USTarget (United States) · US

Funding

ROBBINS Glycosylation and Glycosidases-Cell and Molecular BiologyR01GM031318 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI SAMUELSON, JOHN C. · 1985 to 2011
$4.1M
Glycobiology of GiardiaR01AI048082 · NIAID · BOSTON UNIVERSITY MEDICAL CAMPUS · PI SAMUELSON, JOHN C. · 2003 to 2015
$4.0M
Erythrocyte invasion by Plasmodium falciparum merozoitesR01AI057919 · NIAID · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI DURAISINGH, MANOJ T · 2004 to 2008
$1.8M
Training Program in Host Pathogen InteractionsT32AI052070 · NIAID · BOSTON MEDICAL CENTER · PI SKOLNIK, PAUL R · 2002 to 2006
$1.1M
PROTEIN GLYCOSYLATION - CELLULAR AND MOLECULAR BIOLOGYR37GM031318 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI ROBBINS, PHILLIPS W · 1988 to 1997
–
NIAID NIH HHS AI048082NIAID NIH HHS AI057919NIAID NIH HHS R01 AI048082NIAID NIH HHS R01 AI057919NIAID NIH HHS T32 AI052070NIGMS NIH HHS GM31318NIGMS NIH HHS R01 GM031318
6 · The paper itself

Abstract

We are interested in asparagine-linked glycans (N-glycans) of Plasmodium falciparum and Toxoplasma gondii, because their N-glycan structures have been controversial and because we hypothesize that there might be selection against N-glycans in nucleus-encoded proteins that must pass through the endoplasmic reticulum (ER) prior to threading into the apicoplast. In support of our hypothesis, we observed the following. First, in protists with apicoplasts, there is extensive secondary loss of Alg enzymes that make lipid-linked precursors to N-glycans. Theileria makes no N-glycans, and Plasmodium makes a severely truncated N-glycan precursor composed of one or two GlcNAc residues. Second, secreted proteins of Toxoplasma, which uses its own 10-sugar precursor (Glc(3)Man(5)GlcNAc(2)) and the host 14-sugar precursor (Glc(3)Man(9)GlcNAc(2)) to make N-glycans, have very few sites for N glycosylation, and there is additional selection against N-glycan sites in its apicoplast-targeted proteins. Third, while the GlcNAc-binding Griffonia simplicifolia lectin II labels ER, rhoptries, and surface of plasmodia, there is no apicoplast labeling. Similarly, the antiretroviral lectin cyanovirin-N, which binds to N-glycans of Toxoplasma, labels ER and rhoptries, but there is no apicoplast labeling. We conclude that possible selection against N-glycans in protists with apicoplasts occurs by eliminating N-glycans (Theileria), reducing their length (Plasmodium), or reducing the number of N-glycan sites (Toxoplasma). In addition, occupation of N-glycan sites is markedly reduced in apicoplast proteins versus some secretory proteins in both Plasmodium and Toxoplasma.

Indexed as

Selection, GeneticAsparagineGlycoproteinsModels, BiologicalPlasmodium falciparumPolysaccharidesProtozoan ProteinsToxoplasmaAsparagineGlycoproteinsPolysaccharidesProtozoan Proteins

Identifiers

PMID19783771
PMCPMC2823003
OpenAlexW2116590074

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.