Evidence map›Paper›PMID 19578434›Full record

ArticlePLoS pathogens2009

Evidence for a "wattle and daub" model of the cyst wall of entamoeba.

Anirban Chatterjee, Sudip K Ghosh, Ken Jang, Esther Bullitt, Landon Moore, Phillips W Robbins, John Samuelson

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 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
2.1field-weighted citation impact, top 15% 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, 68 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Novel Insights into the Wattle and Daub Model ofPathogens (Basel, Switzerland) · 2023
    Article
  6. Article
  7. Microbiology spectrum · 2021
    Article
  8. Article
  9. Encystation ofMicroorganisms · 2021
    Article
  10. Stage-SpecificmSphere · 2021
    Article
  11. Article
  12. Article
  13. Demonstration and Characterization of Cyst-Like Structures in the Life Cycle ofFrontiers in cellular and infection microbiology · 2019
    Article
  14. An NADeLife · 2018
    Article
  15. High-Throughput Screening ofFrontiers in cellular and infection microbiology · 2018
    Article
  16. A Flow Cytometry Method for Dissecting the Cell Differentiation Process ofFrontiers in cellular and infection microbiology · 2018
    Article
  17. Article
  18. Article
  19. Review
  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

7 authors at 2 institutions in 2 countries.

Anirban ChatterjeeDepartment of Molecular and Cell Biology, Boston University Goldman School of Dental Medicine, Boston, MA, USA.
Sudip K Ghosh
Ken Jang
Esther Bullitt
Landon Moore
Phillips W Robbins
John Samuelson
Boston University · USIndian Institute of Technology Kharagpur · IN

Funding

ROBBINS Glycosylation and Glycosidases-Cell and Molecular BiologyR01GM031318 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI SAMUELSON, JOHN C. · 1985 to 2011
$4.1M
THREE LECTIN MODEL OF AMEBIC ENCYSTATION AND EXCYSTATIONR01AI044070 · NIAID · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI SAMUELSON, JOHN C. · 2000 to 2010
$4.0M
Improved data collection for FEI TF20 and Philips CM12 electron microscopesS10RR025434 · NCRR · BOSTON UNIVERSITY MEDICAL CAMPUS · PI BULLITT, ESTHER · 2009 to 2009
$263k
PROTEIN GLYCOSYLATION - CELLULAR AND MOLECULAR BIOLOGYR37GM031318 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI ROBBINS, PHILLIPS W · 1988 to 1997
–
NIAID NIH HHS AI44070NIAID NIH HHS R01 AI044070NIGMS NIH HHS GM31318NIGMS NIH HHS R01 GM031318
6 · The paper itself

Abstract

The cyst wall of Entamoeba invadens (Ei), a model for the human pathogen Entamoeba histolytica, is composed of fibrils of chitin and three chitin-binding lectins called Jacob, Jessie3, and chitinase. Here we show chitin, which was detected with wheat germ agglutinin, is made in secretory vesicles prior to its deposition on the surface of encysting Ei. Jacob lectins, which have tandemly arrayed chitin-binding domains (CBDs), and chitinase, which has an N-terminal CBD, were each made early during encystation. These results are consistent with their hypothesized roles in cross-linking chitin fibrils (Jacob lectins) and remodeling the cyst wall (chitinase). Jessie3 lectins likely form the mortar or daub of the cyst wall, because 1) Jessie lectins were made late during encystation; 2) the addition to Jessie lectins to the cyst wall correlated with a marked decrease in the permeability of cysts to nucleic acid stains (DAPI) and actin-binding heptapeptide (phalloidin); and 3) recombinant Jessie lectins, expressed as a maltose-binding proteins in the periplasm of Escherichia coli, caused transformed bacteria to agglutinate in suspension and form a hard pellet that did not dissociate after centrifugation. Jessie3 appeared as linear forms and rosettes by negative staining of secreted recombinant proteins. These findings provide evidence for a "wattle and daub" model of the Entamoeba cyst wall, where the wattle or sticks (chitin fibrils likely cross-linked by Jacob lectins) is constructed prior to the addition of the mortar or daub (Jessie3 lectins).

Indexed as

AgglutinationAnimalsCarrier ProteinsCellular StructuresChitinChitinasesEntamoebaLectinsMaltose-Binding ProteinsMicroscopy, FluorescenceModels, BiologicalPermeabilityProtozoan ProteinsRecombinant Fusion ProteinsSecretory VesiclesCarrier ProteinsChitinChitinasesJacob protein, Entamoeba histolyticaLectinsMaltose-Binding ProteinsProtozoan ProteinsRecombinant Fusion Proteins

Identifiers

PMID19578434
PMCPMC2698119
OpenAlexW1983287108

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.