Evidence map›Paper›PMID 19380481›Full record

ArticleMolecular and cellular biology2009

Novel types of Ca2+ release channels participate in the secretory cycle of Paramecium cells.

Eva-Maria Ladenburger, Ivonne M Sehring, Iris Korn, Helmut Plattner

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.9field-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

20 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Regulation of phosphoinositide metabolism in Apicomplexan parasites.Frontiers in cell and developmental biology · 2023
    Review
  3. Combining IPCurrent research in microbial sciences · 2023
    Article
  4. Review
  5. Review
  6. The acidocalcisome inositol-1,4,5-trisphosphate receptor ofThe Journal of biological chemistry · 2019
    Article
  7. Article
  8. InsP3 Signaling in Apicomplexan Parasites.Current topics in medicinal chemistry · 2017
    Review
  9. Article
  10. Review
  11. Article
  12. Intracellular calcium channels in protozoa.European journal of pharmacology · 2014
    Review
  13. Review
  14. Article
  15. Acidocalcisomes of Trypanosoma brucei have an inositol 1,4,5-trisphosphate receptor that is required for growth and infectivity.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Astrocytes in Alzheimer's disease.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2010
    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

4 authors at 1 institution in 1 country.

Eva-Maria LadenburgerDepartment of Biology, University of Constance, P.O. Box 5560, 78457 Constance, Germany. Eva.Ladenburger@uni-konstanz.de
Ivonne M Sehring
Iris Korn
Helmut Plattner
Constanta Maritime University · RO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A database search of the Paramecium genome reveals 34 genes related to Ca(2+)-release channels of the inositol-1,4,5-trisphosphate (IP(3)) or ryanodine receptor type (IP(3)R, RyR). Phylogenetic analyses show that these Ca(2+) release channels (CRCs) can be subdivided into six groups (Paramecium tetraurelia CRC-I to CRC-VI), each one with features in part reminiscent of IP(3)Rs and RyRs. We characterize here the P. tetraurelia CRC-IV-1 gene family, whose relationship to IP(3)Rs and RyRs is restricted to their C-terminal channel domain. CRC-IV-1 channels localize to cortical Ca(2+) stores (alveolar sacs) and also to the endoplasmic reticulum. This is in contrast to a recently described true IP(3) channel, a group II member (P. tetraurelia IP(3)R(N)-1), found associated with the contractile vacuole system. Silencing of either one of these CRCs results in reduced exocytosis of dense core vesicles (trichocysts), although for different reasons. Knockdown of P. tetraurelia IP(3)R(N) affects trichocyst biogenesis, while CRC-IV-1 channels are involved in signal transduction since silenced cells show an impaired release of Ca(2+) from cortical stores in response to exocytotic stimuli. Our discovery of a range of CRCs in Paramecium indicates that protozoans already have evolved multiple ways for the use of Ca(2+) as signaling molecule.

Indexed as

Amino Acid SequenceAnimalsBiological EvolutionCalciumCalcium ChannelsCalcium SignalingEndoplasmic ReticulumExocytosisGene SilencingInositol 1,4,5-Trisphosphate ReceptorsMolecular Sequence DataParamecium tetraureliaPhylogenyProtozoan ProteinsRyanodine Receptor Calcium Release ChannelSequence AlignmentCalciumCalcium ChannelsInositol 1,4,5-Trisphosphate ReceptorsProtozoan ProteinsRyanodine Receptor Calcium Release Channel

Identifiers

PMID19380481
PMCPMC2698757
OpenAlexW2030631891

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.