Evidence map›Paper›PMID 27966343›Full record

ArticleJournal of the American Chemical Society2016

Biosynthetic Origin of the Ether Ring in Platensimycin.

Jeffrey D Rudolf, Liao-Bin Dong, Karina Manoogian, Ben Shen

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
7.3field-weighted citation impact, top 3% 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

20 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Discovery and Biosynthesis of a Structurally Dynamic Antibacterial Diterpenoid.Angewandte Chemie (International ed. in English) · 2021
    Article
  11. Bacterial terpenome.Natural product reports · 2021
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
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

4 authors at 1 institution in 1 country.

Jeffrey D RudolfDepartment of Chemistry, ‡Department of Molecular Therapeutics, and §Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States.
Liao-Bin DongDepartment of Chemistry, ‡Department of Molecular Therapeutics, and §Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States.
Karina ManoogianDepartment of Chemistry, ‡Department of Molecular Therapeutics, and §Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States.
Ben ShenDepartment of Chemistry, ‡Department of Molecular Therapeutics, and §Natural Products Library Initiative at The Scripps Research Institute, The Scripps Research Institute , Jupiter, Florida 33458, United States.ORCID 0000-0002-9750-5982
Scripps Research Institute · US

Funding

Discovery and biosynthesis of diterpenoid natural products in actinomycetalsR01GM114353 · NIGMS · SCRIPPS FLORIDA · PI SHEN, BEN · 2016 to 2019
$1.8M
NIGMS NIH HHS R01 GM114353
6 · The paper itself

Abstract

Platensimycin (PTM) and platencin (PTN) are highly functionalized bacterial diterpenoid natural products that target bacterial and mammalian fatty acid synthases. PTM and PTN feature varying diterpene-derived ketolides that are linked to the same 3-amino-2,4-dihydroxybenzoic acid moiety. As a result, PTM is a selective inhibitor for FabF/FabB, while PTN is a dual inhibitor of FabF/FabB and FabH. We previously determined that the PTM cassette, consisting of five genes found in the ptm, but not ptn, gene cluster, partitions the biosynthesis of the PTM and PTN diterpene-derived ketolides. We now report investigation of the PTM cassette through the construction of diterpene production systems in E. coli and genetic manipulation in the PTM-PTN dual overproducer Streptomyces platensis SB12029, revealing two genes, ptmT3 and ptmO5, that are responsible for the biosynthetic divergence between the PTM and PTN diterpene-derived ketolides. PtmT3, a type I diterpene synthase, was determined to be a (16R)-ent-kauran-16-ol synthase, the first of its kind found in bacteria. PtmO5, a cytochrome P450 monooxygenase, is proposed to catalyze the formation of the characteristic 11S,16S-ether ring found in PTM. Inactivation of ptmO5 in SB12029 afforded the ΔptmO5 mutant SB12036 that accumulated nine PTM and PTN congeners, seven of which were new, including seven 11-deoxy-16R-hydroxy-PTM congeners. The two fully processed PTM analogues showed antibacterial activities, albeit lower than that of PTM, indicating that the ether ring, or minimally the stereochemistry of the hydroxyl group at C-16, is crucial for the activity of PTM.

Indexed as

AdamantaneAminobenzoatesAnilidesBiocatalysisCytochrome P-450 Enzyme SystemDiterpenesEscherichia coliEtherMicrococcus luteusMutationStaphylococcusAdamantaneAminobenzoatesAnilidesCytochrome P-450 Enzyme SystemDiterpenesEtherplatensimycin

Identifiers

PMID27966343
PMCPMC5466352
OpenAlexW2560710801

What OpenQuestion holds

Textmetadata
LicenceTDM
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.