Evidence map›Paper›PMID 28852167›Full record

ArticleScientific reports2017

Identification of butenolide regulatory system controlling secondary metabolism in Streptomyces albus J1074.

Yousra Ahmed, Yuriy Rebets, Bogdan Tokovenko, Elke Brötz, Andriy Luzhetskyy

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

24 citing papers in PubMed, 39 citations in OpenAlex.

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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

5 authors at 3 institutions in 1 country.

Yousra AhmedHelmholtz-Institute for Pharmaceutical Research Saarland, Actinobacteria Metabolic Engineering Group, Building E8.1, 66123, Saarbrücken, Germany.
Yuriy RebetsHelmholtz-Institute for Pharmaceutical Research Saarland, Actinobacteria Metabolic Engineering Group, Building E8.1, 66123, Saarbrücken, Germany.
Bogdan TokovenkoHelmholtz-Institute for Pharmaceutical Research Saarland, Actinobacteria Metabolic Engineering Group, Building E8.1, 66123, Saarbrücken, Germany.ORCID 0000-0002-7822-9708
Elke BrötzHelmholtz-Institute for Pharmaceutical Research Saarland, Actinobacteria Metabolic Engineering Group, Building E8.1, 66123, Saarbrücken, Germany.
Andriy LuzhetskyyHelmholtz-Institute for Pharmaceutical Research Saarland, Actinobacteria Metabolic Engineering Group, Building E8.1, 66123, Saarbrücken, Germany. a.luzhetskyy@mx.uni-saarland.de.
Helmholtz Institute for Pharmaceutical Research Saarland · DEBASF (Germany) · DEFord (Germany) · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A large majority of genome-encrypted chemical diversity in actinobacteria remains to be discovered, which is related to the low level of secondary metabolism genes expression. Here, we report the application of a reporter-guided screening strategy to activate cryptic polycyclic tetramate macrolactam gene clusters in Streptomyces albus J1074. The analysis of the S. albus transcriptome revealed an overall low level of secondary metabolism genes transcription. Combined with transposon mutagenesis, reporter-guided screening resulted in the selection of two S. albus strains with altered secondary metabolites production. Transposon insertion in the most prominent strain, S. albus ATGSal2P2::TN14, was mapped to the XNR_3174 gene encoding an unclassified transcriptional regulator. The mutant strain was found to produce the avenolide-like compound butenolide 4. The deletion of the gene encoding a putative acyl-CoA oxidase, an orthologue of the Streptomyces avermitilis avenolide biosynthesis enzyme, in the S. albus XNR_3174 mutant caused silencing of secondary metabolism. The homologues of XNR_3174 and the butenolide biosynthesis genes were found in the genomes of multiple Streptomyces species. This result leads us to believe that the discovered regulatory elements comprise a new condition-dependent system that controls secondary metabolism in actinobacteria and can be manipulated to activate cryptic biosynthetic pathways.

Indexed as

Secondary Metabolism4-ButyrolactoneChromatography, LiquidGene Expression Regulation, FungalGenes, FungalHormonesMass SpectrometryMultigene FamilyMutationStreptomycesTranscription, Genetic4-ButyrolactonebutenolideHormones

Identifiers

PMID28852167
PMCPMC5575351
OpenAlexW2747442754

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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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.