Evidence map›Paper›PMID 17384161›Full record

ArticlePlant physiology2007

Cloning and characterization of unusual fatty acid desaturases from Anemone leveillei: identification of an acyl-coenzyme A C20 Delta5-desaturase responsible for the synthesis of sciadonic acid.

Olga Sayanova, Richard Haslam, Monica Venegas Caleron, Johnathan A Napier

Open access · bronzeAbstract read
In one paragraph

Article in Plant physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.0field-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

22 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. ComparativeFrontiers in plant science · 2022
    Article
  6. Article
  7. Nutritional enhancement in plants - green and greener.Current opinion in biotechnology · 2020
    Review
  8. Review
  9. Seeds as oil factories.Plant reproduction · 2018
    Review
  10. Article
  11. Review
  12. Classification and substrate head-group specificity of membrane fatty acid desaturases.Computational and structural biotechnology journal · 2016
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Demospongic acids revisited.Marine drugs · 2010
    Review
  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.

Olga SayanovaRothamsted Research, Harpenden, Herts, United Kingdom. olga.sayanova@bbsrc.ac.uk
Richard Haslam
Monica Venegas Caleron
Johnathan A Napier
Rothamsted Research · GB

Funding

Biotechnology and Biological Sciences Research Council BBS/E/C/00004156
6 · The paper itself

Abstract

The seed oil of Anemone leveillei contains significant amounts of sciadonic acid (20:3Delta(5,11,14); SA), an unusual non-methylene-interrupted fatty acid with pharmaceutical potential similar to arachidonic acid. Two candidate cDNAs (AL10 and AL21) for the C(20) Delta(5cis)-desaturase from developing seeds of A. leveillei were functionally characterized in transgenic Arabidopsis (Arabidopsis thaliana) plants. The open reading frames of both Delta(5)-desaturases showed some similarity to presumptive acyl-coenzyme A (CoA) desaturases found in animals and plants. When expressed in transgenic Arabidopsis, AL21 showed a broad range of substrate specificity, utilizing both saturated (16:0 and 18:0) and unsaturated (18:2, n-6 and 18:3, n-3) substrates. In contrast, AL10 did not show any activity in wild-type Arabidopsis. Coexpression of AL10 or AL21 with a C(18) Delta(9)-elongase in transgenic Arabidopsis plants resulted in the production of SA and juniperonic fatty acid (20:4Delta(5,11,14,17)). Thus, AL10 acted only on C(20) polyunsaturated fatty acids in a manner analogous to "front-end" desaturases. However, neither AL10 nor AL21 contain the cytochrome b(5) domain normally present in this class of enzymes. Acyl-CoA profiling of transgenic Arabidopsis plants and developing A. leveillei seeds revealed significant accumulation of Delta(5)-unsaturated fatty acids as acyl-CoAs compared to the accumulation of these fatty acids in total lipids. Positional analysis of triacylglycerols of A. leveillei seeds showed that Delta(5)-desaturated fatty acids were present in both sn-2 and sn-1 + sn-3 positions, although the majority of 16:1Delta(5), 18:1Delta(5), and SA was present at the sn-2 position. Our data provide biochemical evidence for the A. leveillei Delta(5)-desaturases using acyl-CoA substrates.

Indexed as

Amino Acid SequenceAnemoneArabidopsisArachidonic AcidsCloning, MolecularDelta-5 Fatty Acid DesaturaseFatty Acid DesaturasesFatty AcidsLipid MetabolismMolecular Sequence DataOpen Reading FramesPlant ProteinsPlants, Genetically ModifiedSeedsSequence AlignmentTransformation, GeneticArachidonic AcidsDelta-5 Fatty Acid Desaturaseeicosa-5,11,14-trienoic acidFatty Acid DesaturasesFatty AcidsPlant Proteins

Identifiers

PMID17384161
PMCPMC1913799
OpenAlexW2032131490

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.