Evidence map›Paper›PMID 20133795›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

Genome-minimized Streptomyces host for the heterologous expression of secondary metabolism.

Mamoru Komatsu, Takuma Uchiyama, Satoshi Omura, David E Cane, Haruo Ikeda

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 229 papers.

0numbers the graph read from it
0cells of the map it votes in
229citing papers in PubMed
29.8field-weighted citation impact, top 1% 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

229 citing papers in PubMed, 493 citations in OpenAlex.

  1. Synthetic and systems biotechnology · 2026
    Review
  2. Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Optimizing genome editing efficiency inApplied and environmental microbiology · 2025
    Article
  14. Review
  15. Article
  16. Current Approaches for Genetic Manipulation ofBiotech (Basel (Switzerland)) · 2025
    Review
  17. Genome streamlining ofmSystems · 2024
    Article
  18. Discovery of a novel methionine biosynthetic routeApplied and environmental microbiology · 2024
    Article
  19. Article
  20. Rational construction of genome-minimizedSynthetic and systems biotechnology · 2024
    Article

169 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

5 authors at 3 institutions in 2 countries.

Mamoru KomatsuLaboratory of Microbial Engineering, Kitasato Institute for Life Sciences, Kitasato University, 1-15-1 Kitasato Sagamihara, Kanagawa 228-8555, Japan.
Takuma Uchiyama
Satoshi Omura
David E Cane
Haruo Ikeda
Kitasato University · JPBrown University · USKitasato Institute Hospital · JP

Funding

STEREOCHEMICAL STUDIES OF ISOPRENOID BIOSYNTHESISR01GM030301 · NIGMS · BROWN UNIVERSITY · PI CANE, DAVID E · 1985 to 2015
$5.4M
STEROCHEMICAL STUDIES 0F ISOPRENOID BIOSYNTHESISR37GM030301 · NIGMS · BROWN UNIVERSITY · PI CANE, DAVID E · 1994 to 2003
$1.8M
NIGMS NIH HHS R01 GM030301NIGMS NIH HHS R37 GM030301
6 · The paper itself

Abstract

To construct a versatile model host for heterologous expression of genes encoding secondary metabolite biosynthesis, the genome of the industrial microorganism Streptomyces avermitilis was systematically deleted to remove nonessential genes. A region of more than 1.4 Mb was deleted stepwise from the 9.02-Mb S. avermitilis linear chromosome to generate a series of defined deletion mutants, corresponding to 83.12-81.46% of the wild-type chromosome, that did not produce any of the major endogenous secondary metabolites found in the parent strain. The suitability of the mutants as hosts for efficient production of foreign metabolites was shown by heterologous expression of three different exogenous biosynthetic gene clusters encoding the biosynthesis of streptomycin (from S. griseus Institute for Fermentation, Osaka [IFO] 13350), cephamycin C (from S. clavuligerus American type culture collection (ATCC) 27064), and pladienolide (from S. platensis Mer-11107). Both streptomycin and cephamycin C were efficiently produced by individual transformants at levels higher than those of the native-producing species. Although pladienolide was not produced by a deletion mutant transformed with the corresponding intact biosynthetic gene cluster, production of the macrolide was enabled by introduction of an extra copy of the regulatory gene pldR expressed under control of an alternative promoter. Another mutant optimized for terpenoid production efficiently produced the plant terpenoid intermediate, amorpha-4,11-diene, by introduction of a synthetic gene optimized for Streptomyces codon usage. These findings highlight the strength and flexibility of engineered S. avermitilis as a model host for heterologous gene expression, resulting in the production of exogenous natural and unnatural metabolites.

Indexed as

Bacterial ProteinsCephamycinsEpoxy CompoundsGas Chromatography-Mass SpectrometryGene DeletionGene Expression Regulation, BacterialGenes, EssentialGenetic EngineeringGenome, BacterialIndustrial MicrobiologyMacrolidesMagnetic Resonance SpectroscopyMultigene FamilyMutationPolycyclic SesquiterpenesSesquiterpenesamorpha-4,11-dieneBacterial Proteinscephamycin CCephamycinsEpoxy CompoundsMacrolidespladienolide Bpladienolide DPolycyclic SesquiterpenesSesquiterpenesStreptomycin

Identifiers

PMID20133795
PMCPMC2823899
OpenAlexW2084447564

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.