Evidence map›Paper›PMID 20463905›Full record

ArticlePloS one2010

Concomitant duplications of opioid peptide and receptor genes before the origin of jawed vertebrates.

Görel Sundström, Susanne Dreborg, Dan Larhammar

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

29 citing papers in PubMed, 109 citations in OpenAlex.

  1. Toxins in disguise: Neuropeptide mimicry across animal venoms.General and comparative endocrinology · 2026
    Review
  2. Peripheral catecholamine systems: an evolutionary perspective.American journal of physiology. Regulatory, integrative and comparative physiology · 2025
    Review
  3. Article
  4. Review
  5. Current State of Modeling Human Psychiatric Disorders Using Zebrafish.International journal of molecular sciences · 2023
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. A tetrapeptide class of biased analgesics from an Australian fungus targets the µ-opioid receptor.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  16. Article
  17. Evolution of neuropeptide signalling systems.The Journal of experimental biology · 2018
    Review
  18. Perspectives on Endogenous Opioids in Birds.Frontiers in physiology · 2018
    Article
  19. Article
  20. Central N/OFQ-NOP Receptor System in Pain Modulation.Advances in pharmacology (San Diego, Calif.) · 2016
    Review
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

3 authors at 1 institution in 1 country.

Görel SundströmDepartment of Neuroscience, Uppsala University, Uppsala, Sweden.
Susanne Dreborg
Dan Larhammar
Uppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe opioid system is involved in reward and pain mechanisms and consists in mammals of four receptors and several peptides. The peptides are derived from four prepropeptide genes, PENK, PDYN, PNOC and POMC, encoding enkephalins, dynorphins, orphanin/nociceptin and beta-endorphin, respectively. Previously we have described how two rounds of genome doubling (2R) before the origin of jawed vertebrates formed the receptor family. METHODOLOGY/PRINCIPAL

findingsOpioid peptide gene family members were investigated using a combination of sequence-based phylogeny and chromosomal locations of the peptide genes in various vertebrates. Several adjacent gene families were investigated similarly. The results show that the ancestral peptide gene gave rise to two additional copies in the genome doublings. The fourth member was generated by a local gene duplication, as the genes encoding POMC and PNOC are located on the same chromosome in the chicken genome and all three teleost genomes that we have studied. A translocation has disrupted this synteny in mammals. The PDYN gene seems to have been lost in chicken, but not in zebra finch. Duplicates of some peptide genes have arisen in the teleost fishes. Within the prepropeptide precursors, peptides have been lost or gained in different lineages. CONCLUSIONS/SIGNIFICANCE: The ancestral peptide and receptor genes were located on the same chromosome and were thus duplicated concomitantly. However, subsequently genetic linkage has been lost. In conclusion, the system of opioid peptides and receptors was largely formed by the genome doublings that took place early in vertebrate evolution.

Indexed as

Biological EvolutionGene DuplicationAmino Acid SequenceAnimalsChickensConserved SequenceEvolution, MolecularHumansJawMolecular Sequence DataOpioid PeptidesPhylogenyReceptors, Cell SurfaceSequence AlignmentSyntenyVertebratesOpioid PeptidesReceptors, Cell Surface

Identifiers

PMID20463905
PMCPMC2865548
OpenAlexW1987811475

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.