Evidence map›Paper›PMID 21732215›Full record

ArticleLipids2011

Isolation of a novel oil globule protein from the green alga Haematococcus pluvialis (Chlorophyceae).

Ehud Peled, Stefan Leu, Aliza Zarka, Meira Weiss, Uri Pick, Inna Khozin-Goldberg, Sammy Boussiba

Abstract read
PubMed Publisher
In one paragraph

Article in Lipids, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

36 citing papers in PubMed, 105 citations in OpenAlex.

  1. Exploring the Potential ofMicroorganisms · 2025
    Review
  2. Algal research · 2024
    Article
  3. Lipid Droplets in EndosymbioticPlants (Basel, Switzerland) · 2024
    Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Structure and properties of oil bodies in diatoms.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  16. Review
  17. Article
  18. Article
  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

7 authors at 2 institutions in 1 country.

Ehud PeledMicroalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 84990, Sede boker campus, Israel.
Stefan Leu
Aliza Zarka
Meira Weiss
Uri Pick
Inna Khozin-Goldberg
Sammy Boussiba
Ben-Gurion University of the Negev · ILWeizmann Institute of Science · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cytoplasmic oil globules of Haematococcus pluvialis (Chlorophyceae) were isolated and analyzed for pigments, lipids and proteins. Astaxanthin appeared to be the only pigment deposited in the globules. Triacyglycerols were the main lipids (more than 90% of total fatty acids) in both the cell-free extract and in the oil globules. Lipid profile analysis of the oil globules showed that relative to the cell-free extract, they were enriched with extraplastidial lipids. A fatty acids profile revealed that the major fatty acids in the isolated globules were oleic acid (18:1) and linoleic acid (18:2). Protein extracts from the globules revealed seven enriched protein bands, all of which were possible globule-associated proteins. A major 33-kDa globule protein was partially sequenced by MS/MS analysis, and degenerate DNA primers were prepared and utilized to clone its encoding gene from cDNA extracted from cells grown in a nitrogen depleted medium under high light. The sequence of this 275-amino acid protein, termed the Haematococcus Oil Globule Protein (HOGP), revealed partial homology with a Chlamydomonas reinhardtii oil globule protein and with undefined proteins from other green algae. The HOGP transcript was barely detectable in vegetative cells, but its level increased by more than 100 fold within 12 h of exposure to nitrogen depletion/high light conditions, which induced oil accumulation. HOGP is the first oil-globule-associated protein to be identified in H. pluvialis, and it is a member of a novel gene family that may be unique to green microalgae.

Indexed as

ChlorophytaAmino Acid SequenceChlorophyllChromatography, High Pressure LiquidFatty AcidsGene ExpressionHydrophobic and Hydrophilic InteractionsMolecular Sequence DataPlant ExtractsPlant OilsPlant ProteinsSequence AlignmentXanthophyllsastaxanthineChlorophyllFatty AcidsPlant ExtractsPlant OilsPlant ProteinsXanthophylls

Identifiers

PMID21732215
OpenAlexW2123085220

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.