Evidence map›Paper›PMID 20419721›Full record

ArticleChembiochem : a European journal of chemical biology2010

Sesquiterpene synthases Cop4 and Cop6 from Coprinus cinereus: catalytic promiscuity and cyclization of farnesyl pyrophosphate geometric isomers.

Fernando Lopez-Gallego, Sean A Agger, Daniel Abate-Pella, Mark D Distefano, Claudia Schmidt-Dannert

Abstract read
In one paragraph

Article in Chembiochem : a European journal of chemical biology, 2010. 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
–field-weighted citation impact
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.

  1. Article
  2. Article
  3. Article
  4. Homoterpene Biosynthesis in Fungi.Angewandte Chemie (International ed. in English) · 2025
    Article
  5. Article
  6. Characterization of the Cubamyces Menziesii Terpenome.Chembiochem : a European journal of chemical biology · 2025
    Article
  7. Article
  8. Clade III Synthases Add Cyclic and Linear Terpenoids to the Psilocybe Metabolome.Chembiochem : a European journal of chemical biology · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Whole-Genome Resequencing Reveals the Diversity of Patchouli Germplasm.International journal of molecular sciences · 2023
    Article
  15. Article
  16. Overview of fungal terpene synthases and their regulation.World journal of microbiology & biotechnology · 2023
    Review
  17. Genome mining of cryptic bisabolenes that were biosynthesized by intramembrane terpene synthases fromPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Article
  18. Biosynthesis of Sesquiterpenes in Basidiomycetes: A Review.Journal of fungi (Basel, Switzerland) · 2022
    Review
  19. Article
  20. Unusual (2iScience · 2022
    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

5 authors.

Fernando Lopez-GallegoDepartment of Biochemistry, University of Minnesota, Paul, MN 55108, USA.
Sean A Agger
Daniel Abate-Pella
Mark D Distefano
Claudia Schmidt-Dannert

Funding

Biosynthesis of cytotoxic sesquiterpenoids by higher basidiomycetesR01GM080299 · NIGMS · UNIVERSITY OF MINNESOTA · PI SCHMIDT-DANNERT, CLAUDIA · 2008 to 2011
$1.1M
NIGMS NIH HHS GM080299NIGMS NIH HHS R01 GM080299
6 · The paper itself

Abstract

Sesquiterpene synthases catalyze with different catalytic fidelity the cyclization of farnesyl pyrophosphate (FPP) into hundreds of known compounds with diverse structures and stereochemistries. Two sesquiterpene synthases, Cop4 and Cop6, were previously isolated from Coprinus cinereus as part of a fungal genome survey. This study investigates the reaction mechanism and catalytic fidelity of the two enzymes. Cyclization of all-trans-FPP ((E,E)-FPP) was compared to the cyclization of the cis-trans isomer of FPP ((Z,E)-FPP) as a surrogate for the secondary cisoid neryl cation intermediate generated by sesquiterpene synthases, which are capable of isomerizing the C2--C3 pi bond of all-trans-FPP. Cop6 is a "high-fidelity" alpha-cuprenene synthase that retains its fidelity under various conditions tested. Cop4 is a catalytically promiscuous enzyme that cyclizes (E,E)-FPP into multiple products, including (-)-germacrene D and cubebol. Changing the pH of the reaction drastically alters the fidelity of Cop4 and makes it a highly selective enzyme. Cyclization of (Z,E)-FPP by Cop4 and Cop6 yields products that are very different from those obtained with (E,E)-FPP. Conversion of (E,E)-FPP proceeds via a (6R)-beta-bisabolyl carbocation in the case of Cop6 and an (E,E)-germacradienyl carbocation in the case of Cop4. However, (Z,E)-FPP is cyclized via a (6S)-beta-bisabolene carbocation by both enzymes. Structural modeling suggests that differences in the active site and the loop that covers the active site of the two enzymes might explain their different catalytic fidelities.

Indexed as

CoprinusCyclizationFungal ProteinsIsomerismModels, MolecularPolyisoprenyl PhosphatesSesquiterpenesSubstrate Specificityfarnesyl pyrophosphateFungal ProteinsPolyisoprenyl PhosphatesSesquiterpenes

Identifiers

PMID20419721
PMCPMC2873112

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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.