Evidence map›Paper›PMID 19128480›Full record

ArticleBMC evolutionary biology2009

Molecular evolution of UCP1 and the evolutionary history of mammalian non-shivering thermogenesis.

David A Hughes, Martin Jastroch, Mark Stoneking, Martin Klingenspor

Open access · goldAbstract read
In one paragraph

Article in BMC evolutionary biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 8% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 87 citations in OpenAlex.

  1. Pooled it
  2. iScience · 2025
    Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Pros and cons for the evidence of adaptive non-shivering thermogenesis in marsupials.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2021
    Review
  10. Review
  11. Review
  12. Review
  13. Article
  14. Coevolution of body size and metabolic rate in vertebrates: a life-history perspective.Biological reviews of the Cambridge Philosophical Society · 2020
    Article
  15. Review
  16. The evolution of mechanisms involved in vertebrate endothermy.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    Review
  17. Association of leukemia and mitochondrial diseases-A review.Journal of family medicine and primary care · 2019
    Review
  18. Review
  19. 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 4 institutions in 1 country.

David A HughesMax-Planck-Institute for Evolutionary Anthropology, Department of Evolutionary Genetics, Leipzig, Germany. hughes@eva.mpg.de
Martin Jastroch
Mark Stoneking
Martin Klingenspor
Max Planck Institute for Evolutionary Anthropology · DEMax Planck Society · DEPhilipps University of Marburg · DETechnical University of Munich · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundUncoupling protein 1 (UCP1) is a mitochondrial anion carrier, expressed in brown adipose tissue (BAT) of Eutherians. UCP1 is responsible for uncoupling mitochondrial proton transport from the production of ATP, thereby dissipating heat; it is essential for non-shivering thermogenesis (NST) in mammalian BAT. UCP1 orthologs have been identified in non-Eutherian mammals, fish and amphibians. Yet, UCP1 has a unique function in Eutherians in that it is necessary in the production of heat (NST). As such, this study aims to determine the evolutionary mode of UCP1 in Eutherians, where there is clear evidence of UCP1-dependent NST in BAT.

resultsModels of adaptive evolution through phylogenetic analysis of amino acid sequences by maximum likelihood were implemented to determine the mode of UCP1 protein evolution in Eutherians. An increase in the rate of amino acid substitutions on the branch leading to Eutherians is observed, but is best explained by relaxed constraints, not positive selection. Further, evidence for branch and site heterogeneity in selection pressures, as well as divergent selection pressures between UCP1 and its paralogs (UCP2-3) is observed.

conclusionWe propose that the unique thermogenic function of UCP1 in Eutherians may be best explained by neutral processes. Along with other evidence, this suggests that the primary biochemical properties of UCP1 may not differ between Eutherians and non-Eutherians.

Indexed as

Evolution, MolecularAnimalsCodonGenetic VariationIon ChannelsMammalsMitochondrial ProteinsPhylogenySelection, GeneticThermogenesisUncoupling Protein 1CodonIon ChannelsMitochondrial ProteinsUncoupling Protein 1

Identifiers

PMID19128480
PMCPMC2627829
OpenAlexW1972959017

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Registered trials

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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.