Evidence map›Paper›PMID 21541023›Full record

ArticlePloS one2011

Calcium uptake and proton transport by acidocalcisomes of Toxoplasma gondii.

Peter Rohloff, Kildare Miranda, Juliany C F Rodrigues, Jianmin Fang, Melina Galizzi, Helmut Plattner, Joachim Hentschel, Silvia N J Moreno

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.8field-weighted citation impact, top 19% 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

25 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Egress Regulatory Factors: HowPathogens (Basel, Switzerland) · 2023
    Review
  5. Article
  6. Updated List of Transport Proteins inFrontiers in cellular and infection microbiology · 2022
    Review
  7. Article
  8. Article
  9. CaMolecular microbiology · 2021
    Article
  10. Calcium in the Backstage of Malaria Parasite Biology.Frontiers in cellular and infection microbiology · 2021
    Review
  11. Review
  12. Article
  13. Article
  14. Calcium signaling and the lytic cycle of the Apicomplexan parasite Toxoplasma gondii.Biochimica et biophysica acta. Molecular cell research · 2018
    Review
  15. Acidocalcisomes of eukaryotes.Current opinion in cell biology · 2016
    Review
  16. Polyphosphate and acidocalcisomes.Biochemical Society transactions · 2016
    Review
  17. Review
  18. Intracellular calcium channels in protozoa.European journal of pharmacology · 2014
    Review
  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

8 authors at 3 institutions in 3 countries.

Peter RohloffDepartment of Cellular Biology and Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America.
Kildare Miranda
Juliany C F Rodrigues
Jianmin Fang
Melina Galizzi
Helmut Plattner
Joachim Hentschel
Silvia N J Moreno
University of Georgia · USUniversity of Konstanz · DEUniversidade Federal do Rio de Janeiro · BR

Funding

A novel vacuolar compartment in Toxoplasma gondiiR21AI079625 · NIAID · UNIVERSITY OF GEORGIA · PI MORENO, SILVIA N · 2009 to 2010
$408k
NIAID NIH HHS AI-079625NIAID NIH HHS R21 AI079625
6 · The paper itself

Abstract

Acidocalcisomes are acidic calcium stores found in diverse organisms, being conserved from bacteria to humans. They possess an acidic matrix that contains several cations bound to phosphates, which are mainly present in the form of short and long polyphosphate chains. Their matrix is acidified through the action of proton pumps such as a vacuolar proton ATPase and a vacuolar proton pyrophosphatase. Calcium uptake occurs through a Ca(2+)/H(+) countertransporting ATPase located in the membrane of the organelle. Acidocalcisomes have been identified in a variety of microorganisms, including Apicomplexan parasites such as Plasmodium and Eimeria species, and in Toxoplasma gondii. We report the purification and characterization of an acidocalcisome fraction from T. gondii tachyzoites after subcellular fractionation and further discontinuous iodixanol gradient purification. Proton and calcium transport activities in the fraction were characterized by fluorescence microscopy and spectrophotometric methods using acridine orange and arsenazo III, respectively. This work will facilitate the understanding of the function of acidocalcisomes in Apicomplexan parasites, as we can now isolate highly purified fractions that could be used for proteomic analysis to find proteins that may clarify the biogenesis of these organelles.

Indexed as

ProtonsAdenosine TriphosphateBiomarkersCalciumCalcium ChlorideCell Membrane PermeabilityIon TransportOrganellesPolyphosphatesProton PumpsSodium ChlorideSubcellular FractionsToxoplasmaTriiodobenzoic AcidsAdenosine TriphosphateBiomarkersCalciumCalcium ChlorideiodixanolPolyphosphatesProton PumpsProtonsSodium ChlorideTriiodobenzoic Acids

Identifiers

PMID21541023
PMCPMC3081817
OpenAlexW1984021084

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.