Evidence map›Paper›PMID 17905880›Full record

ArticleApplied and environmental microbiology2007

Analysis of the mycosamine biosynthesis and attachment genes in the nystatin biosynthetic gene cluster of Streptomyces noursei ATCC 11455.

Aina Nedal, Håvard Sletta, Trygve Brautaset, Sven E F Borgos, Olga N Sekurova, Trond E Ellingsen, Sergey B Zotchev

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

16 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
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  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Biosynthesis and pathway engineering of antifungal polyene macrolides in actinomycetes.Journal of industrial microbiology & biotechnology · 2013
    Review
  14. Article
  15. The in vitro characterization of polyene glycosyltransferases AmphDI and NysDI.Chembiochem : a European journal of chemical biology · 2008
    Article
  16. 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

7 authors at 2 institutions in 1 country.

Aina NedalDepartment of Biotechnology, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
Håvard Sletta
Trygve Brautaset
Sven E F Borgos
Olga N Sekurova
Trond E Ellingsen
Sergey B Zotchev
SINTEF · NONorwegian University of Science and Technology · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The polyene macrolide antibiotic nystatin produced by Streptomyces noursei contains a deoxyaminosugar mycosamine moiety attached to the C-19 carbon of the macrolactone ring through the beta-glycosidic bond. The nystatin biosynthetic gene cluster contains three genes, nysDI, nysDII, and nysDIII, encoding enzymes with presumed roles in mycosamine biosynthesis and attachment as glycosyltransferase, aminotransferase, and GDP-mannose dehydratase, respectively. In the present study, the functions of these three genes were analyzed. The recombinant NysDIII protein was expressed in Escherichia coli and purified, and its in vitro GDP-mannose dehydratase activity was demonstrated. The nysDI and nysDII genes were inactivated individually in S. noursei, and analyses of the resulting mutants showed that both genes produced nystatinolide and 10-deoxynystatinolide as major products. Expression of the nysDI and nysDII genes in trans in the respective mutants partially restored nystatin biosynthesis in both cases, supporting the predicted roles of these two genes in mycosamine biosynthesis and attachment. Both antifungal and hemolytic activities of the purified nystatinolides were shown to be strongly reduced compared to those of nystatin, confirming the importance of the mycosamine moiety for the biological activity of nystatin.

Indexed as

Multigene FamilyAnimalsBlotting, WesternCarbohydrate DehydrogenasesChromatography, High Pressure LiquidChromatography, LiquidGenetic VectorsGlycosyltransferasesHemolysisHexosaminesHorsesMass SpectrometryMolecular StructureNystatinPolymerase Chain ReactionRecombinant ProteinsCarbohydrate DehydrogenasesGDPmannose dehydrogenaseGlycosyltransferasesHexosaminesmycosamineNystatinRecombinant ProteinsTransaminases

Identifiers

PMID17905880
PMCPMC2168226
OpenAlexW2132708863

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.