Evidence map›Paper›PMID 9770490›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1998

Nuclear-encoded proteins target to the plastid in Toxoplasma gondii and Plasmodium falciparum.

R F Waller, P J Keeling, R G Donald, B Striepen, E Handman, N Lang-Unnasch, A F Cowman, G S Besra, D S Roos, G I McFadden

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 224 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
224citing papers in PubMed, 1 pooled it
30.5field-weighted citation impact, top 1% 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

224 citing papers in PubMed, 1 synthesis or guideline pooled it, 701 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  5. Review
  6. Article
  7. Article
  8. Article
  9. A pyruvate transporter in the apicoplast of apicomplexan parasites.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
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  11. TheeLife · 2024
    Article
  12. Article
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  14. Review
  15. Article
  16. Mining Fatty Acid Biosynthesis for New Antimicrobials.Annual review of microbiology · 2022
    Review
  17. Article
  18. Review
  19. Article
  20. Review

164 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

10 authors at 1 institution in 1 country.

R F WallerPlant Cell Biology Research Centre, School of Botany, University of Melbourne, Parkville VIC 3052, Australia.
P J Keeling
R G Donald
B Striepen
E Handman
N Lang-Unnasch
A F Cowman
G S Besra
D S Roos
G I McFadden
Walter and Eliza Hall Institute of Medical Research · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A vestigial, nonphotosynthetic plastid has been identified recently in protozoan parasites of the phylum Apicomplexa. The apicomplexan plastid, or "apicoplast," is indispensable, but the complete sequence of both the Plasmodium falciparum and Toxoplasma gondii apicoplast genomes has offered no clue as to what essential metabolic function(s) this organelle might perform in parasites. To investigate possible functions of the apicoplast, we sought to identify nuclear-encoded genes whose products are targeted to the apicoplast in Plasmodium and Toxoplasma. We describe here nuclear genes encoding ribosomal proteins S9 and L28 and the fatty acid biosynthetic enzymes acyl carrier protein (ACP), beta-ketoacyl-ACP synthase III (FabH), and beta-hydroxyacyl-ACP dehydratase (FabZ). These genes show high similarity to plastid homologues, and immunolocalization of S9 and ACP verifies that the proteins accumulate in the plastid. All the putatively apicoplast-targeted proteins bear N-terminal presequences consistent with plastid targeting, and the ACP presequence is shown to be sufficient to target a recombinant green fluorescent protein reporter to the apicoplast in transgenic T. gondii. Localization of ACP, and very probably FabH and FabZ, in the apicoplast implicates fatty acid biosynthesis as a likely function of the apicoplast. Moreover, inhibition of P. falciparum growth by thiolactomycin, an inhibitor of FabH, indicates a vital role for apicoplast fatty acid biosynthesis. Because the fatty acid biosynthesis genes identified here are of a plastid/bacterial type, and distinct from those of the equivalent pathway in animals, fatty acid biosynthesis is potentially an excellent target for therapeutics directed against malaria, toxoplasmosis, and other apicomplexan-mediated diseases.

Indexed as

AnimalsBase SequenceCloning, MolecularDNA, ComplementaryFatty AcidsGreen Fluorescent ProteinsLuminescent ProteinsMolecular Sequence DataNuclear ProteinsPhylogenyPlasmodium falciparumPlastidsToxoplasmaDNA, ComplementaryFatty AcidsGreen Fluorescent ProteinsLuminescent ProteinsNuclear Proteins

Identifiers

PMID9770490
PMCPMC22835
OpenAlexW2049679577

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.