Evidence map›Paper›PMID 22837051›Full record

ArticlePlanta2012

Molecular characterization of the pentacyclic triterpenoid biosynthetic pathway in Catharanthus roseus.

Lili Huang, Jia Li, Hechun Ye, Changfu Li, Hong Wang, Benye Liu, Yansheng Zhang

Erratum issuedAbstract read
PubMed Publisher
In one paragraph

Article in Planta, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing 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

56 citing papers in PubMed, 136 citations in OpenAlex.

  1. Modular reconstruction and multilevel regulation ofSynthetic and systems biotechnology · 2026
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  5. Review
  6. Review
  7. Isolation of two triterpenoids fromFrontiers in plant science · 2023
    Article
  8. Article
  9. Review
  10. Article
  11. The Euscaphis japonica genome and the evolution of malvids.The Plant journal : for cell and molecular biology · 2021
    Article
  12. Review
  13. Article
  14. Ginsenosides inActa pharmaceutica Sinica. B · 2021
    Review
  15. Biocatalysis in the Chemistry of Lupane Triterpenoids.Molecules (Basel, Switzerland) · 2021
    Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Lili HuangCAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Chinese Academy of Science, 430074, Wuhan, China.
Jia Li
Hechun Ye
Changfu Li
Hong Wang
Benye Liu
Yansheng Zhang
Wuhan Botanical Garden · CNInstitute of Botany · CNUniversity of Chinese Academy of Sciences · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Catharanthus roseus is an important medicinal plant and the sole commercial source of monoterpenoid indole alkaloids (MIA), anticancer compounds. Recently, triterpenoids like ursolic acid and oleanolic acid have also been found in considerable amounts in C. roseus leaf cuticular wax layer. These simple pentacyclic triterpenoids exhibit various pharmacological activities such as anti-inflammatory, anti-tumor and anti-microbial properties. Using the EST collection from C. roseus leaf epidermome ( http://www.ncbi.nlm.nih.gov/dbEST ), we have successfully isolated a cDNA (CrAS) encoding 2,3-oxidosqualene cyclase (OSC) and a cDNA (CrAO) encoding amyrin C-28 oxidase from the leaves of C. roseus. The functions of CrAS and CrAO were analyzed in yeast (Saccharomyces cerevisiae) systems. CrAS was characterized as a novel multifunctional OSC producing α- and β-amyrin in a ratio of 2.5:1, whereas CrAO was a multifunctional C-28 oxidase converting α-amyrin, β-amyrin and lupeol to ursolic-, oleanolic- and betulinic acids, respectively, via a successive oxidation at the C-28 position of the substrates. In yeast co-expressing CrAO and CrAS, ursolic- and oleanolic acids were detected in the yeast cell extracts, while the yeast cells co-expressing CrAO and AtLUP1 from Arabidopsis thaliana produced betulinic acid. Both CrAS and CrAO genes show a high expression level in the leaf, which was consistent with the accumulation patterns of ursolic- and oleanolic acids in C. roseus. These results suggest that CrAS and CrAO are involved in the pentacyclic triterpene biosynthesis in C. roseus.

Indexed as

ArabidopsisBiosynthetic PathwaysCatharanthusCloning, MolecularCytochrome P-450 Enzyme SystemDNA, ComplementaryExpressed Sequence TagsGene Expression Regulation, PlantIntramolecular TransferasesLupanesOleanolic AcidPentacyclic TriterpenesPlant LeavesPlant ProteinsPlants, MedicinalSaccharomyces cerevisiaebeta-amyrinCytochrome P-450 Enzyme SystemDNA, ComplementaryIntramolecular Transferaseslanosterol synthaseLupaneslupeolOleanolic AcidPentacyclic TriterpenesPlant ProteinsTriterpenesUrsolic Acid

Identifiers

PMID22837051
OpenAlexW1983779245

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.