Evidence map›Paper›PMID 12324314›Full record

ArticleApplied and environmental microbiology2002

Engineering of primary carbon metabolism for improved antibiotic production in Streptomyces lividans.

Michael J Butler, Per Bruheim, Srdjan Jovetic, Flavia Marinelli, Pieter W Postma, Mervyn J Bibb

Abstract read
In one paragraph

Article in Applied and environmental microbiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing 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

31 citing papers in PubMed.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Synthetic Biology Tools for Engineering Microbial Cells to Fight Superbugs.Frontiers in bioengineering and biotechnology · 2022
    Review
  9. 3 Biotech · 2021
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. The return of metabolism: biochemistry and physiology of the pentose phosphate pathway.Biological reviews of the Cambridge Philosophical Society · 2015
    Review
  17. Article
  18. NADPH-generating systems in bacteria and archaea.Frontiers in microbiology · 2015
    Review
  19. Article
  20. 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

6 authors.

Michael J ButlerDepartment of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, United Kingdom. michael.butler@bbsrc.ac.uk
Per Bruheim
Srdjan Jovetic
Flavia Marinelli
Pieter W Postma
Mervyn J Bibb

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Deletions were made in Streptomyces lividans in either of two genes (zwf1 and zwf2) encoding isozymes of glucose-6-phosphate dehydrogenase, the first enzyme in the oxidative pentose phosphate pathway (PPP). Each mutation reduced the level of Zwf activity to approximately one-half that observed in the wild-type strain. When the mutants were transformed with multicopy plasmids carrying the pathway-specific transcriptional activator genes for either the actinorhodin (ACT) or undecylprodigiosin (RED) biosynthetic pathway, they produced higher levels of antibiotic than the corresponding wild-type control strains. The presumed lower flux of carbon through the PPP in each of the Deltazwf mutants may allow more efficient glucose utilization via glycolysis, resulting in higher levels of antibiotic production. This appears to occur without lowering the concentration of NADPH (the major biochemical product of the oxidative PPP activity) to a level that would limit antibiotic biosynthesis. Consistent with this hypothesis, deletion of the gene (devB) encoding the enzyme that catalyzes the next step in the oxidative PPP (6-phosphogluconolactonase) also resulted in increased antibiotic production. However, deletion of both zwf genes from the devB mutant resulted in reduced levels of ACT and RED production, suggesting that some of the NADPH made by the PPP is utilized, directly or indirectly, for antibiotic biosynthesis. Although applied here to the model antibiotics ACT and RED, such mutations may prove to be useful for improving the yield of commercially important secondary metabolites.

Indexed as

Anti-Bacterial AgentsCarbonCosmidsGene DeletionGenes, BacterialGenetic EngineeringKineticsMicrobial Sensitivity TestsStreptomycesAnti-Bacterial AgentsCarbon

Identifiers

PMID12324314
PMCPMC126421

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.