Evidence map›Paper›PMID 17263300›Full record

ArticleLipids2006

Highly unsaturated fatty acid synthesis in marine fish: cloning, functional characterization, and nutritional regulation of fatty acyl delta 6 desaturase of Atlantic cod (Gadus morhua L.).

Douglas R Tocher, Xiaozhong Zheng, Christian Schlechtriem, Nicola Hastings, James R Dick, Alan J Teale

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Lipids, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
6.0field-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

54 citing papers in PubMed, 220 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Comparative Response ofAnimals : an open access journal from MDPI · 2026
    Article
  4. Hemp Meal (Animals : an open access journal from MDPI · 2026
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  17. Review
  18. Influence of Parental Fatty Acid Desaturase 2 (Animals : an open access journal from MDPI · 2020
    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

6 authors at 2 institutions in 1 country.

Douglas R TocherInstitute of Aquaculture, University of Stirling, Stirling FK9 4LA, Scotland, United Kingdom. d.r.tocher@stir.ac.uk
Xiaozhong Zheng
Christian Schlechtriem
Nicola Hastings
James R Dick
Alan J Teale
University of Stirling · GBRoslin Institute · GB

Funding

Biotechnology and Biological Sciences Research Council BB/C51237X/1
6 · The paper itself

Abstract

This study reports the cloning, functional characterization, tissue expression, and nutritional regulation of a delta6 fatty acyl desaturase of Atlantic cod (Gadus morhua). PCR primers were designed based on the sequences of conserved motifs in available fish desaturases and used to isolate a cDNA fragment from cod liver, with full-length cDNA obtained by rapid amplification of cDNA ends. The cDNA for the putative desaturase was shown to comprise 1980 bp, including a 261-bp 5'-UTR, a 375-bp 3'-UTR, and an ORF of 1344 bp that specified a protein of 447 amino acids. The protein sequence included three histidine boxes, two transmembrane regions, and an N-terminal cytochrome b5 domain containing the heme-binding motif HPGG, all characteristic of microsomal fatty acyl desaturases. The cDNA displayed delta6 desaturase activity in a yeast expression system. Quantitative real-time PCR assay of gene expression in cod showed that the delta6 desaturase gene was expressed highly in brain, to a slightly lesser extent in liver, kidney, intestine, red muscle, and gill, and at much lower levels in white muscle, spleen, and heart. The expression of the delta6 desaturase gene did not appear to be under significant nutritional regulation, with levels in liver and intestine being barely altered in fish fed a vegetable oil blend, in comparison with levels in fish fed fish oil. This was reflected in enzyme activity, as hepatocytes or enterocytes showed very little highly unsaturated FA biosynthesis activity irrespective of diet. Further studies are required to determine why the delta6 desaturase appears to be barely functional in cod under the conditions tested.

Indexed as

Animal FeedCloning, MolecularAmino Acid SequenceAnimalsDietary FatsFatty Acids, UnsaturatedFish OilsGadus morhuaLinoleoyl-CoA DesaturaseMolecular Sequence DataPlant OilsDietary FatsFatty Acids, UnsaturatedFish OilsLinoleoyl-CoA DesaturasePlant Oils

Identifiers

PMID17263300
OpenAlexW2055908840

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.