Evidence map›Paper›PMID 30976052›Full record

ArticleScientific reports2019

The enzymes OSC1 and CYP716A263 produce a high variety of triterpenoids in the latex of Taraxacum koksaghyz.

Katharina M Pütter, Nicole van Deenen, Boje Müller, Lea Fuchs, Kirsten Vorwerk, Kristina Unland, Jan Niklas Bröker, Emely Scherer, Claudia Huber, Wolfgang Eisenreich and 2 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.5field-weighted citation impact, top 17% 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

12 citing papers in PubMed, 34 citations in OpenAlex.

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  12. Oxidosqualene Cyclase Knock-Down in Latex ofMolecules (Basel, Switzerland) · 2019
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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

12 authors at 2 institutions in 1 country.

Katharina M PütterUniversity of Muenster, Institute of Plant Biology and Biotechnology, Schlossplatz 8, 48143, Muenster, Germany.
Nicole van DeenenUniversity of Muenster, Institute of Plant Biology and Biotechnology, Schlossplatz 8, 48143, Muenster, Germany.
Boje MüllerFraunhofer Institute for Molecular Biology and Applied Ecology IME, Schlossplatz 8, 48143, Muenster, Germany.
Lea FuchsUniversity of Muenster, Institute of Plant Biology and Biotechnology, Schlossplatz 8, 48143, Muenster, Germany.
Kirsten VorwerkUniversity of Muenster, Institute of Plant Biology and Biotechnology, Schlossplatz 8, 48143, Muenster, Germany.
Kristina UnlandFraunhofer Institute for Molecular Biology and Applied Ecology IME, Schlossplatz 8, 48143, Muenster, Germany.
Jan Niklas BrökerUniversity of Muenster, Institute of Plant Biology and Biotechnology, Schlossplatz 8, 48143, Muenster, Germany.
Emely SchererTechnische Universität München, Chair of Biochemistry, Lichtenbergstraße 4, 85747, Garching, Germany.
Claudia HuberTechnische Universität München, Chair of Biochemistry, Lichtenbergstraße 4, 85747, Garching, Germany.
Wolfgang EisenreichTechnische Universität München, Chair of Biochemistry, Lichtenbergstraße 4, 85747, Garching, Germany.
Dirk PrüferUniversity of Muenster, Institute of Plant Biology and Biotechnology, Schlossplatz 8, 48143, Muenster, Germany.
Christian Schulze GronoverFraunhofer Institute for Molecular Biology and Applied Ecology IME, Schlossplatz 8, 48143, Muenster, Germany. christian.schulze.gronover@ime.fraunhofer.de.ORCID http://orcid.org/0000-0001-6398-2265
Fraunhofer Institute for Molecular Biology and Applied Ecology · DETechnical University of Munich · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Only very little is known about the resin composition of natural rubber from the dandelion species Taraxacum koksaghyz, thus its full characterization could provide new insights into how the isoprenoid end-products influence the physical properties of natural rubber, and this resin might be a good source of highly diverse triterpenoids. Here, we present a comprehensive analysis of the triterpenoid composition in an acetone extract and identified 13 triterpenes and triterpenoids also including the so far unknown pentacyclic compounds lup-19(21)-en-3-ol (1) and its ketone lup-19(21)-en-3-one (2). We purified single triterpenes from the acetone extract by developing a two-step HPLC system that is adapted to the structural differences of the described triterpenoids. Furthermore, we isolated six different oxidosqualene cyclases (OSCs) and two P450 enzymes, and we functionally characterized TkOSC1 and CYP716A263 in Nicotiana benthamiana and Saccharomyces cerevisiae in detail. TkOSC1 is a multifunctional OSC that was capable of synthesizing at least four of the latex-predominant pentacyclic triterpenes (taraxasterol, α-, β-amyrin and lup-19(21)-en-3-ol) while CYP716A263 oxidized pentacyclic triterpenes at the C-3 position. The identified enzymes responsible for biosynthesis and modification of pentacyclic triterpenes in T. koksaghyz latex may represent excellent tools for bioengineering approaches to produce pentacyclic triterpenes heterologously.

Indexed as

Cytochrome P-450 Enzyme SystemGene Expression Regulation, PlantIntramolecular TransferasesLatexPlant LeavesPlant ProteinsTaraxacumTriterpenesCytochrome P-450 Enzyme SystemIntramolecular Transferaseslanosterol synthaseLatexPlant ProteinsTriterpenes

Identifiers

PMID30976052
PMCPMC6459903
OpenAlexW2935832441

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.