Evidence map›Paper›PMID 26909570›Full record

ArticleJournal of the American Chemical Society2016

Dynamically Complex [6+4] and [4+2] Cycloadditions in the Biosynthesis of Spinosyn A.

Ashay Patel, Zhuo Chen, Zhongyue Yang, Osvaldo Gutiérrez, Hung-wen Liu, K N Houk, Daniel A Singleton

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 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

37 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Natural product reports · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Review
  18. Ab Initio Molecular Dynamics Simulations of the SJournal of the American Chemical Society · 2021
    Article
  19. Computational Investigation of the Mechanism of Diels-Alderase PyrI4.Journal of the American Chemical Society · 2020
    Article
  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

7 authors.

Ashay PatelDepartment of Chemistry and Biochemistry, University of California , Los Angeles, California 90095-1569, United States.
Zhuo ChenDepartment of Chemistry, Texas A & M University , College Station, Texas 77843-3255, United States.
Zhongyue YangDepartment of Chemistry and Biochemistry, University of California , Los Angeles, California 90095-1569, United States.
Osvaldo GutiérrezDepartment of Chemistry and Biochemistry, University of California , Los Angeles, California 90095-1569, United States.
Hung-wen LiuCollege of Pharmacy and Department of Chemistry, University of Texas at Austin , Austin, Texas 78712-1224, United States.
K N HoukDepartment of Chemistry and Biochemistry, University of California , Los Angeles, California 90095-1569, United States.
Daniel A SingletonDepartment of Chemistry, Texas A & M University , College Station, Texas 77843-3255, United States.

Funding

Three-Membered Ring Metabolites, Inhibition &FormationR01GM040541 · NIGMS · UNIVERSITY OF TEXAS AUSTIN · PI LIU, HUNG-WEN · 1989 to 2023
$7.4M
CHEMISTRY BIOLOGY INTERFACE TRAINING PROGRAMT32GM008496 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MAYNARD, HEATHER D · 1993 to 2019
$6.3M
New Concepts In Organic Selectivity and MechanismsR01GM045617 · NIGMS · TEXAS A&M UNIVERSITY SYSTEM · PI SINGLETON, DANIEL A · 1991 to 2019
$4.5M
Mapping the Evolution of a Novel Enzyme by Experiment and ComputationR01GM097200 · NIGMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HOUK, KENDALL N, TANG, YI · 2012 to 2015
$1.3M
NIGMS NIH HHS 1R01GM097200NIGMS NIH HHS GM 040541NIGMS NIH HHS GM 45617NIGMS NIH HHS R01 GM040541NIGMS NIH HHS R01 GM045617NIGMS NIH HHS R01 GM097200NIGMS NIH HHS T32 GM 008496NIGMS NIH HHS T32 GM008496
6 · The paper itself

Abstract

SpnF, an enzyme involved in the biosynthesis of spinosyn A, catalyzes a transannular Diels-Alder reaction. Quantum mechanical computations and dynamic simulations now show that this cycloaddition is not well described as either a concerted or stepwise process, and dynamical effects influence the identity and timing of bond formation. The transition state for the reaction is ambimodal and leads directly to both the observed Diels-Alder and an unobserved [6+4] cycloadduct. The potential energy surface bifurcates and the cycloadditions occur by dynamically stepwise modes featuring an "entropic intermediate". A rapid Cope rearrangement converts the [6+4] adduct into the observed [4+2] adduct. Control of nonstatistical dynamical effects may serve as another way by which enzymes control reactions.

Indexed as

Cycloaddition ReactionMacrolidesModels, MolecularQuantum TheoryThermodynamicsMacrolidesspinosyn A

Identifiers

PMID26909570
PMCPMC5367884

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.