Evidence map›Paper›PMID 10329621›Full record

ArticleThe EMBO journal1999

Evidence that free GPI glycolipids are essential for growth of Leishmania mexicana.

S C Ilgoutz, J L Zawadzki, J E Ralton, M J McConville

Abstract read
In one paragraph

Article in The EMBO journal, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
6.5field-weighted citation impact, top 3% 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

31 citing papers in PubMed, 88 citations in OpenAlex.

  1. Free GPIs and Comparison of GPI Structures Among Species.International journal of molecular sciences · 2025
    Review
  2. Article
  3. Article
  4. Review
  5. Major Molecular Factors Related toFrontiers in immunology · 2022
    Review
  6. Article
  7. Article
  8. Humanizing glycosylation pathways in eukaryotic expression systems.World journal of microbiology & biotechnology · 2017
    Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. The LPG1 gene family of Leishmania major.Molecular and biochemical parasitology · 2004
    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

4 authors at 1 institution in 1 country.

S C IlgoutzDepartment of Biochemistry and Molecular Biology, The University of Melbourne, Parkville, Victoria 3052, Australia.
J L Zawadzki
J E Ralton
M J McConville
University of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The cell surface of the parasitic protozoan Leishmania mexicana is coated by glycosylphosphatidylinositol (GPI)-anchored glycoproteins, a GPI-anchored lipophosphoglycan and a class of free GPI glycolipids. To investigate whether the anchor or free GPIs are required for parasite growth we cloned the L.mexicana gene for dolichol-phosphate-mannose synthase (DPMS) and attempted to create DPMS knockout mutants by targeted gene deletion. DPMS catalyzes the formation of dolichol-phosphate mannose, the sugar donor for all mannose additions in the biosynthesis of both the anchor and free GPIs, except for a alpha1-3-linked mannose residue that is added exclusively to the free GPIs and lipophosphoglycan anchor precursors. The requirement for dolichol-phosphate-mannose in other glycosylation pathways in L.mexicana is minimal. Deletion of both alleles of the DPMS gene (lmdpms) consistently resulted in amplification of the lmdpms chromosomal locus unless the promastigotes were first transfected with an episomal copy of lmdpms, indicating that lmdpms, and possibly GPI biosynthesis, is essential for parasite growth. As evidence presented in this and previous studies indicates that neither GPI-anchored glycoproteins nor lipophosphoglycan are required for growth of cultured parasites, it is possible that the abundant and functionally uncharacterized free GPIs are essential membrane components.

Indexed as

AnimalsCarbohydrate SequenceCloning, MolecularDolichol Monophosphate MannoseGene DeletionGene Expression RegulationGlycolipidsGlycosphingolipidsGlycosylphosphatidylinositolsLeishmania mexicanaMannosyltransferasesMolecular Sequence DataMolecular StructureMutationRestriction MappingSequence AlignmentDolichol Monophosphate Mannosedolichyl-phosphate beta-D-mannosyltransferaseGlycolipidsGlycosphingolipidsGlycosylphosphatidylinositolslipophosphonoglycanMannosyltransferases

Identifiers

PMID10329621
PMCPMC1171356
OpenAlexW1973030143

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.