Evidence map›Paper›PMID 35761075›Full record

ArticleNature chemical biology2022

Biosynthesis of saponin defensive compounds in sea cucumbers.

Ramesha Thimmappa, Shi Wang, Minyan Zheng, Rajesh Chandra Misra, Ancheng C Huang, Gerhard Saalbach, Yaqing Chang, Zunchun Zhou, Veronica Hinman, Zhenmin Bao and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Nature chemical biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
6.7field-weighted citation impact, top 2% 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

25 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Sterol divergence across eukaryotic kingdoms determines membrane susceptibility to saponins, a class of plant defense compounds.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. An Alkaloid Biosynthetic Gene Bundle in Animals.Journal of the American Chemical Society · 2026
    Article
  4. Article
  5. Characterization of Bioactive Saponins from Sea Cucumbers.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  6. The complete mitochondrial genome ofMitochondrial DNA. Part B, Resources · 2026
    Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
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  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Saponin Fraction CIL1 fromPharmaceutics · 2023
    Article
  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

11 authors at 5 institutions in 4 countries.

Ramesha ThimmappaDepartment of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich, UK. btramesha@gmail.com.ORCID http://orcid.org/0000-0003-2641-9865
Shi Wang *Sars-Fang Centre and MOE Key Laboratory of Marine Genetics and Breeding, Ocean University of China and National Laboratory for Marine Science and Technology, Qingdao, China.
Minyan Zheng *Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, USA.ORCID http://orcid.org/0000-0001-7990-1773
Rajesh Chandra MisraDepartment of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich, UK.ORCID http://orcid.org/0000-0001-9594-3789
Ancheng C HuangDepartment of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich, UK.ORCID http://orcid.org/0000-0003-0355-4271
Gerhard SaalbachDepartment of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich, UK.
Yaqing ChangCollege of Fisheries and Life Science, Dalian Ocean University, Dalian, China.
Zunchun ZhouLiaoning Ocean and Fisheries Science Research Institute, Dalian, China.
Veronica HinmanDepartment of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, USA.
Zhenmin BaoSars-Fang Centre and MOE Key Laboratory of Marine Genetics and Breeding, Ocean University of China and National Laboratory for Marine Science and Technology, Qingdao, China.
Anne OsbournDepartment of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich, UK. anne.osbourn@jic.ac.uk.ORCID http://orcid.org/0000-0003-2195-5810
John Innes Centre · GBCarnegie Mellon University · USQingdao National Laboratory for Marine Science and Technology · CNDalian Ocean University · CNLiaoning Ocean and Fisheries Research Institute · CN

Funding

Biotechnology and Biological Sciences Research Council BBS/E/J/000PR9790
6 · The paper itself

Abstract

Soft-bodied slow-moving sea creatures such as sea stars and sea cucumbers lack an adaptive immune system and have instead evolved the ability to make specialized protective chemicals (glycosylated steroids and triterpenes) as part of their innate immune system. This raises the intriguing question of how these biosynthetic pathways have evolved. Sea star saponins are steroidal, while those of the sea cucumber are triterpenoid. Sterol biosynthesis in animals involves cyclization of 2,3-oxidosqualene to lanosterol by the oxidosqualene cyclase (OSC) enzyme lanosterol synthase (LSS). Here we show that sea cucumbers lack LSS and instead have two divergent OSCs that produce triterpene saponins and that are likely to have evolved from an ancestral LSS by gene duplication and neofunctionalization. We further show that sea cucumbers make alternate sterols that confer protection against self-poisoning by their own saponins. Collectively, these events have enabled sea cucumbers to evolve the ability to produce saponins and saponin-resistant sterols concomitantly.

Indexed as

SaponinsSea CucumbersTriterpenesAnimalsGlycosylationSterolsSaponinsSterolsTriterpenes

Identifiers

PMID35761075
PMCPMC9236903
OpenAlexW4283697488

What OpenQuestion holds

Textmetadata
LicenceTDM
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.