Evidence map›Paper›PMID 32845158›Full record

ArticleOrganic letters2021

Structure Prediction and Synthesis of Pyridine-Based Macrocyclic Peptide Natural Products.

Graham A Hudson, Annie R Hooper, Adam J DiCaprio, David Sarlah, Douglas A Mitchell

Abstract read
In one paragraph

Article in Organic letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–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

15 citing papers in PubMed.

  1. The Diels-Alder Reaction as a Key Step in Natural Product Synthesis.Progress in the chemistry of organic natural products · 2026
    Review
  2. Article
  3. Article
  4. Total Synthesis and Stereochemical Assignment of Enteropeptin A.Journal of the American Chemical Society · 2024
    Article
  5. Review
  6. Article
  7. Review
  8. Enzymatic Pyridine Aromatization during Thiopeptide Biosynthesis.Journal of the American Chemical Society · 2022
    Article
  9. Bioinspired Total Synthesis of Pyritide A2 through Pyridine Ring Synthesis.Angewandte Chemie (International ed. in English) · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. 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

5 authors.

Graham A HudsonDepartment of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States.ORCID 0000-0002-3715-4279
Annie R HooperDepartment of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States.
Adam J DiCaprioDepartment of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States.
David SarlahDepartment of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States.ORCID 0000-0002-8736-8953
Douglas A MitchellDepartment of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States.ORCID 0000-0002-9564-0953

Funding

Genomics-Accelerated Natural Product DiscoveryR01GM123998 · NIGMS · VANDERBILT UNIVERSITY · PI MITCHELL, DOUGLAS ALAN · 2017 to 2024
$2.6M
NIGMS NIH HHS R01 GM123998
6 · The paper itself

Abstract

The structural and functional characterization of natural products is vastly outpaced by the bioinformatic identification of biosynthetic gene clusters (BGCs) that encode such molecules. Uniting our knowledge of bioinformatics and enzymology to predict and synthetically access natural products is an effective platform for investigating cryptic/silent BGCs. We report the identification, biosynthesis, and total synthesis of a minimalistic class of ribosomally synthesized and post-translationally modified peptides (RiPPs) with the responsible BGCs encoding a subset of enzymes known from thiopeptide biosynthesis. On the basis of the BGC content, these RiPPs were predicted to undergo enzymatic dehydration of serine followed by [4+2]-cycloaddition to produce a trisubstituted, pyridine-based macrocycle. These RiPPs, termed "pyritides", thus contain the same six-membered, nitrogenous heterocycle that defines the thiopeptide RiPP class but lack the ubiquitous thiazole/thiazoline heterocycles, suggesting that thiopeptides should be reclassified as a more elaborate subclass of the pyritides. One pyritide product was obtained using an 11-step synthesis, and the structure verified by an orthogonal chemoenzymatic route using the precursor peptide and cognate pyridine synthase. This work exemplifies complementary bioinformatics, enzymology, and synthesis to characterize a minimalistic yet structurally intriguing scaffold that, unlike most thiopeptides, lacks growth-suppressive activity toward Gram-positive bacteria.

Indexed as

Biological ProductsComputational BiologyCycloaddition ReactionGram-Positive BacteriaMolecular StructureMultigene FamilyPeptidesProtein Processing, Post-TranslationalPyridinesRibosomesThiazolesBiological ProductsPeptidesPyridinesThiazoles

Identifiers

PMID32845158
PMCPMC7854978

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.