Evidence map›Paper›PMID 8682797›Full record

ArticleJournal of bacteriology1996

Identification of a major cis-acting DNA element controlling the bidirectionally transcribed penicillin biosynthesis genes acvA (pcbAB) and ipnA (pcbC) of Aspergillus nidulans.

K T Bergh, O Litzka, A A Brakhage

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In one paragraph

Article in Journal of bacteriology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
6.2field-weighted citation impact, top 3% 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

22 citing papers in PubMed, 69 citations in OpenAlex.

  1. Identification of a Bidirectional Promoter fromJournal of fungi (Basel, Switzerland) · 2022
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  9. Bacteria-induced natural product formation in the fungus Aspergillus nidulans requires Saga/Ada-mediated histone acetylation.Proceedings of the National Academy of Sciences of the United States of America · 2011
    Article
  10. Transcriptional regulatory elements in fungal secondary metabolism.Journal of microbiology (Seoul, Korea) · 2011
    Review
  11. Article
  12. Article
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  14. Article
  15. Article
  16. Aspergillus enzymes involved in degradation of plant cell wall polysaccharides.Microbiology and molecular biology reviews : MMBR · 2001
    Review
  17. Review
  18. Article
  19. Article
  20. Molecular regulation of beta-lactam biosynthesis in filamentous fungi.Microbiology and molecular biology reviews : MMBR · 1998
    Review
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

3 authors at 1 institution in 1 country.

K T BerghLehrstuhl für Mikrobiologie, Universitat Munchen, Germany.
O Litzka
A A Brakhage
Technical University of Munich · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The beta-lactam antibiotic penicillin is produced as a secondary metabolite by some filamentous fungi. In this study, the molecular regulation of the Aspergillus (Emericella) nidulans penicillin biosynthesis genes acvA (pcbAB) and ipnA (pcbC) was analyzed. acvA and ipnA are divergently oriented and separated by an intergenic region of 872 bp. Translational fusions of acvA and ipnA with the two Escherichia coli reporter genes lacZ and uidA enabled us to measure the regulation of both genes simultaneously. A moving-window analysis of the 872-bp intergenic region indicated that the divergently oriented promoters are, at least in part, overlapping and share common regulatory elements. Removal of nucleotides -353 to -432 upstream of the acvA gene led to a 10-fold increase of acvA-uidA expression and simultaneously to a reduction of ipnA-lacZ expression to about 30%. Band shift assays and methyl interference analysis using partially purified protein extracts revealed that a CCAAT-containing DNA element within this region was specifically bound by a protein (complex), which we designated PENR1, for penicillin regulator. Deletion of 4 bp within the identified protein binding site caused the same contrary effects on acvA and ipnA expression as observed for all of the deletion clones which lacked nucleotides -353 to -432. The PENR1 binding site thus represents a major cis-acting DNA element. The intergenic regions of the corresponding genes of the beta-lactam-producing fungi Penicillium chrysogenum and Acremonium chrysogenum also diluted the complex formed between the A. nidulans probe and PENR1 in vitro, suggesting that these beta-lactam biosynthesis genes are regulated by analogous DNA elements and proteins.

Indexed as

DNA, BacterialGene Expression Regulation, BacterialRegulatory Sequences, Nucleic AcidAcremoniumAspergillus nidulansBase SequenceBinding SitesDNA-Binding ProteinsGuanosineMolecular Sequence DataOxidoreductasesPenicillinsPenicillium chrysogenumPeptide SynthasesPhenotypeSequence Deletionalpha-aminoadipyl-cysteinyl-valine synthetaseDNA, BacterialDNA-Binding ProteinsGuanosineisopenicillin N synthetaseOxidoreductasesPenicillinsPeptide Synthases

Identifiers

PMID8682797
PMCPMC232653
OpenAlexW2169647392

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.