Evidence map›Paper›PMID 12371743›Full record

ArticleLipids2002

Identification and expression of mammalian long-chain PUFA elongation enzymes.

Amanda E Leonard, Bruce Kelder, Emil G Bobik, Lu-Te Chuang, Christopher J Lewis, John J Kopchick, Pradip Mukerji, Yung-Sheng Huang

Abstract read
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In one paragraph

Article in Lipids, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

75 citing papers in PubMed, 214 citations in OpenAlex.

  1. Polyunsaturated fatty acid metabolism in the retinal pigment epithelium and its association with outer retinal disease.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
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  6. A Sex-Specific Minimal CpG-Based Model for Biological Aging UsingInternational journal of molecular sciences · 2025
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  10. Contribution ofAnimals : an open access journal from MDPI · 2024
    Article
  11. ZebrafishFrontiers in cell and developmental biology · 2024
    Article
  12. Article
  13. Article
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  15. Review
  16. Review
  17. Review
  18. Article
  19. Article
  20. Article

15 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

8 authors at 2 institutions in 1 country.

Amanda E LeonardRoss Products Division, Abbott Laboratories, Columbus, Ohio 43215, USA.
Bruce Kelder
Emil G Bobik
Lu-Te Chuang
Christopher J Lewis
John J Kopchick
Pradip Mukerji
Yung-Sheng Huang
Ross Laboratories (United States) · USOhio University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In mammalian cells, Sprecher has proposed that the synthesis of long-chain PUFA from the 20-carbon substrates involves two consecutive elongation steps, a delta6-desaturation step followed by retroconversion (Sprecher, H., Biochim. Biophys. Acta 1486, 219-231, 2000). We searched the database using the translated sequence of human elongase ELOVL5, whose encoded enzyme elongates monounsaturated and polyunsaturated FA, as a query to identify the enzyme(s) involved in elongation of very long chain PUFA. The database search led to the isolation of two cDNA clones from human and mouse. These clones displayed deduced amino acid sequences that had 56.4 and 58% identity, respectively, to that of ELOVL5. The open reading frame of the human clone (ELOVL2) encodes a 296-amino acid peptide, whereas the mouse clone (Elovl2) encodes a 292-amino acid peptide. Expression of these open reading frames in baker's yeast, Saccharomyces cerevisiae, demonstrated that the encoded proteins were involved in the elongation of both 20- and 22-carbon long-chain PUFA, as determined by the conversion of 20:4n-6 to 22:4n-6, 22:4n-6 to 24:4n-6, 20:5n-3 to 22:5n-3, and 22:5n-3 to 24:5n-3. The elongation activity of the mouse Elovl2 was further demonstrated in the transformed mouse L cells incubated with long-chain (C20- and C22-carbon) n-6 and n-3 PUFA substrates by the significant increase in the levels of 24:4n-6 and 24:5n-3, respectively. This report demonstrates the isolation and identification of two mammalian genes that encode very long chain PUFA specific elongation enzymes in the Sprecher pathway for DHA synthesis.

Indexed as

AcetyltransferasesAmino Acid SequenceAnimalsBlotting, NorthernCloning, MolecularDNA, ComplementaryFatty Acid DesaturasesFatty Acid ElongasesFatty Acids, Omega-3Fatty Acids, Omega-6Fatty Acids, UnsaturatedGas Chromatography-Mass SpectrometryGenetic VectorsHumansMiceMolecular Sequence DataAcetyltransferasesDNA, ComplementaryELOVL2 protein, humanELOVL2 protein, mouseELOVL5 protein, humanFatty Acid DesaturasesFatty Acid ElongasesFatty Acids, Omega-3Fatty Acids, Omega-6Fatty Acids, Unsaturated

Identifiers

PMID12371743
OpenAlexW2078490695

What Socratic 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 Socratic graph.