Evidence map›Paper›PMID 21378046›Full record

ArticleApplied and environmental microbiology2011

Fungal gene expression on demand: an inducible, tunable, and metabolism-independent expression system for Aspergillus niger.

Vera Meyer, Franziska Wanka, Janneke van Gent, Mark Arentshorst, Cees A M J J van den Hondel, Arthur F J Ram

Open access · greenAbstract readValidation Study
In one paragraph

Article in Applied and environmental microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed, 1 pooled it
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

94 citing papers in PubMed, 1 synthesis or guideline pooled it, 253 citations in OpenAlex.

  1. Pooled it
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  14. Tuning fungal promoters for the expression of eukaryotic proteins.World journal of microbiology & biotechnology · 2024
    Review
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  19. The antifungal peptide AnAFP fromFrontiers in microbiology · 2024
    Article
  20. Article

34 more citing papers are in PubMed but not listed here.

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

6 authors at 2 institutions in 1 country.

Vera MeyerBerlin University of Technology, Institute of Biotechnology, Department of Applied and Molecular Microbiology, Gustav-Meyer-Allee 25, 13355 Berlin, Germany. vera.meyer@tu-berlin.de
Franziska Wanka
Janneke van Gent
Mark Arentshorst
Cees A M J J van den Hondel
Arthur F J Ram
Leiden University · NLCancer Genomics Centre · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Filamentous fungi are the cause of serious human and plant diseases but are also exploited in biotechnology as production platforms. Comparative genomics has documented their genetic diversity, and functional genomics and systems biology approaches are under way to understand the functions and interaction of fungal genes and proteins. In these approaches, gene functions are usually inferred from deletion or overexpression mutants. However, studies at these extreme points give only limited information. Moreover, many overexpression studies use metabolism-dependent promoters, often causing pleiotropic effects and thus limitations in their significance. We therefore established and systematically evaluated a tunable expression system for Aspergillus niger that is independent of carbon and nitrogen metabolism and silent under noninduced conditions. The system consists of two expression modules jointly targeted to a defined genomic locus. One module ensures constitutive expression of the tetracycline-dependent transactivator rtTA2(S)-M2, and one module harbors the rtTA2(S)-M2-dependent promoter that controls expression of the gene of interest (the Tet-on system). We show here that the system is tight, responds within minutes after inducer addition, and allows fine-tuning based on the inducer concentration or gene copy number up to expression levels higher than the expression levels of the gpdA promoter. We also validate the Tet-on system for the generation of conditional overexpression mutants and demonstrate its power when combined with a gene deletion approach. Finally, we show that the system is especially suitable when the functions of essential genes must be examined.

Indexed as

Gene Expression Regulation, FungalAspergillus nigerCarbonFungal ProteinsGenetics, MicrobialMutagenesis, InsertionalNitrogenRecombination, GeneticTranscriptional ActivationCarbonFungal ProteinsNitrogen

Identifiers

PMID21378046
PMCPMC3126388
OpenAlexW2101667055

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.