Evidence map›Paper›PMID 21862704›Full record

ArticleThe Plant cell2011

Elucidation of the pathway to astaxanthin in the flowers of Adonis aestivalis.

Francis X Cunningham, Elisabeth Gantt

Open access · greenAbstract read
In one paragraph

Article in The Plant cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

34 citing papers in PubMed, 125 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Heterologous Production in theAntioxidants (Basel, Switzerland) · 2023
    Article
  10. Review
  11. Production of Astaxanthin Using CBFD1/HFBD1 fromBioengineering (Basel, Switzerland) · 2023
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Plants (Basel, Switzerland) · 2021
    Article
  18. Article
  19. Diversity and Evolution of Carotenoid Biosynthesis from Prokaryotes to Plants.Advances in experimental medicine and biology · 2021
    Review
  20. 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

2 authors at 1 institution in 1 country.

Francis X CunninghamDepartment of Cell Biology and Molecular Genetics, University of Maryland, College Park, Maryland 20742, USA. buddyx@umd.edu
Elisabeth Gantt
University of Maryland, College Park · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A few species in the genus Adonis are the only land plants known to produce the valuable red ketocarotenoid astaxanthin in abundance. Here, we ascertain the pathway that leads from the β-rings of β-carotene, a carotenoid ubiquitous in plants, to the 3-hydroxy-4-keto-β-rings of astaxanthin (3,3'-dihydroxy-β,β-carotene-4,4'-dione) in the blood-red flowers of Adonis aestivalis, an ornamental and medicinal plant commonly known as summer pheasant's eye. Two gene products were found to catalyze three distinct reactions, with the first and third reactions of the pathway catalyzed by the same enzyme. The pathway commences with the activation of the number 4 carbon of a β-ring in a reaction catalyzed by a carotenoid β-ring 4-dehydrogenase (CBFD), continues with the further dehydrogenation of this carbon to yield a carbonyl in a reaction catalyzed by a carotenoid 4-hydroxy-β-ring 4-dehydrogenase, and concludes with the addition of an hydroxyl group at the number 3 carbon in a reaction catalyzed by the erstwhile CBFD enzyme. The A. aestivalis pathway is both portable and robust, functioning efficiently in a simple bacterial host. Our elucidation of the pathway to astaxanthin in A. aestivalis provides enabling technology for development of a biological production process and reveals the evolutionary origin of this unusual plant pathway, one unrelated to and distinctly different from those used by bacteria, green algae, and fungi to synthesize astaxanthin.

Indexed as

AdonisBase Sequencebeta CaroteneEscherichia coliEvolution, MolecularFlowersGene LibraryGenetic Complementation TestMolecular Sequence DataOxidoreductasesPhylogenyPlant ProteinsPlants, MedicinalSequence Analysis, DNAXanthophyllsastaxanthinebeta CaroteneOxidoreductasesPlant ProteinsXanthophylls

Identifiers

PMID21862704
PMCPMC3180810
OpenAlexW2159636464

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.