Evidence map›Paper›PMID 22717438›Full record

ArticleNature chemistry2012

Biosynthesis of the tunicamycin antibiotics proceeds via unique exo-glycal intermediates.

Filip J Wyszynski, Seung Seo Lee, Tomoaki Yabe, Hua Wang, Juan Pablo Gomez-Escribano, Mervyn J Bibb, Soo Jae Lee, Gideon J Davies, Benjamin G Davis

Abstract read
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In one paragraph

Article in Nature chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
–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

36 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Biosynthesis and Genome Mining Potentials of Nucleoside Natural Products.Chembiochem : a European journal of chemical biology · 2023
    Article
  3. Article
  4. Article
  5. Draft genome sequence of3 Biotech · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. PelX is a UDP-The Journal of biological chemistry · 2020
    Article
  11. Homologous expression of lysA encoding diaminopimelic acid (DAP) decarboxylase reveals increased antibiotic production in Streptomyces clavuligerus.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2020
    Article
  12. Article
  13. Review
  14. Tunicamycin: chemical synthesis and biosynthesis.The Journal of antibiotics · 2019
    Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Filip J WyszynskiChemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK.
Seung Seo Lee
Tomoaki Yabe
Hua Wang
Juan Pablo Gomez-Escribano
Mervyn J Bibb
Soo Jae Lee
Gideon J Davies
Benjamin G Davis

Funding

Biotechnology and Biological Sciences Research Council BB/E004350/1Biotechnology and Biological Sciences Research Council BBS/E/J/00000607Biotechnology and Biological Sciences Research Council BBS/E/J/0000A227Biotechnology and Biological Sciences Research Council EGA17763
6 · The paper itself

Abstract

The tunicamycins are archetypal nucleoside antibiotics targeting bacterial peptidoglycan biosynthesis and eukaryotic protein N-glycosylation. Understanding the biosynthesis of their unusual carbon framework may lead to variants with improved selectivity. Here, we demonstrate in vitro recapitulation of key sugar-manipulating enzymes from this pathway. TunA is found to exhibit unusual regioselectivity in the reduction of a key α,β-unsaturated ketone. The product of this reaction is shown to be the preferred substrate for TunF--an epimerase that converts the glucose derivative to a galactose. In Streptomyces strains in which another gene (tunB) is deleted, the biosynthesis is shown to stall at this exo-glycal product. These investigations confirm the combined TunA/F activity and delineate the ordering of events in the metabolic pathway. This is the first time these surprising exo-glycal intermediates have been seen in biology. They suggest that construction of the aminodialdose core of tunicamycin exploits their enol ether motif in a mode of C-C bond formation not previously observed in nature, to create an 11-carbon chain.

Indexed as

Anti-Bacterial AgentsBacterial ProteinsBiocatalysisCarbohydrate EpimerasesComputational BiologyHydro-LyasesKetonesMultigene FamilyProtein Structure, TertiaryPseudomonas aeruginosaStereoisomerismSubstrate SpecificityTunicamycinAnti-Bacterial AgentsBacterial ProteinsCarbohydrate EpimerasesHydro-LyasesKetonesTunicamycinUDP-N-acetylglucosamine 4-epimerasewbpM protein, Pseudomonas aeruginosa

Identifiers

PMID22717438

What OpenQuestion holds

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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.