Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 350

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Recombinant Environmental Libraries Provide Access to Microbial Diversity for Drug Discovery from Natural Products

Open access
Courtois, Sophie, Cappellano, Carmela M., Ball, Maria, Francou, Francois-Xavier, Normand, Philippe, Helynck, Gérard, Martinez, Asuncion, Kolvek, Steven J., Hopke, Joern, Osburne, Marcia S., August, Paul R., Nalin, Renaud, Guérineau, Michel, Jeannin, Pascale, Simonet, Pascal, Pernodet, Jean-Luc·2003·Applied and Environmental Microbiology

Abstract

To further explore possible avenues for accessing microbial biodiversity for drug discovery from natural products, we constructed and screened a 5,000-clone “shotgun” environmental DNA library by using an Escherichia coli-Streptomyces lividans shuttle cosmid vector and DNA inserts from microbes derived directly (without cultivation) from soil. The library was analyzed by several means to assess diversity, genetic content, and expression of heterologous genes in both expression hosts. We found that the phylogenetic content of the DNA library was extremely diverse, representing mostly microorganisms that have not been described previously. The library was screened by PCR for sequences similar to parts of type I polyketide synthase genes and tested for the expression of new molecules by screening of live colonies and cell extracts. The results revealed new polyketide synthase genes in at least eight clones. In addition, at least five additional clones were confirmed by high-pressure liquid chromatography analysis and/or biological activity to produce heterologous molecules. These data reinforce the idea that exploiting previously unknown or uncultivated microorganisms for the discovery of novel natural products has potential value and, most importantly, suggest a strategy for developing this technology into a realistic and effective drug discovery tool.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1128/aem.69.1.49-55.2003

Cites

1 of 1 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 350

Metadata

Authors
Courtois, S., Cappellano, C. M., Ball, M., Francou, F.-X., Normand, P., Helynck, G., Martinez, A., Kolvek, S. J., Hopke, J., Osburne, M. S., August, P. R., Nalin, R., Guérineau, M., Jeannin, P., Simonet, P., & Pernodet, J.-L.
Venue
Applied and Environmental Microbiology
Published
2003-01
Volume
69
Issue
1
Pages
49-55
ISSN
  • 0099-2240 (ISSN-L)
  • 1098-5336
OpenAlex
W2107209717
Cited by
350
References
1
FWCI
12.97
Type
journal article
Language
en
Open access
green

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Recombinant Environmental Libraries Provide Access to Microbial Diversity for Drug Discovery from Natural Products. https://app.cochat.ai/papers/10.1128/aem.69.1.49-55.2003
The paper
Courtois, S., Cappellano, C. M., Ball, M., Francou, F.-X., Normand, P., Helynck, G., Martinez, A., Kolvek, S. J., Hopke, J., Osburne, M. S., August, P. R., Nalin, R., Guérineau, M., Jeannin, P., Simonet, P., & Pernodet, J.-L. (2003). Recombinant Environmental Libraries Provide Access to Microbial Diversity for Drug Discovery from Natural Products. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.69.1.49-55.2003

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.