Evidence map›Paper›PMID 29348209›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Influence of water and enzyme SpnF on the dynamics and energetics of the ambimodal [6+4]/[4+2] cycloaddition.

Zhongyue Yang, Song Yang, Peiyuan Yu, Yanwei Li, Charles Doubleday, Jiyong Park, Ashay Patel, Byung-Sun Jeon, William K Russell, Hung-Wen Liu and 2 more

Abstract readVideo-Audio Media
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

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

12 authors.

Zhongyue YangDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569.
Song YangDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569.
Peiyuan YuDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569.
Yanwei LiDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569.
Charles DoubledayDepartment of Chemistry, Columbia University, New York, NY 10027.
Jiyong ParkDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569.
Ashay PatelDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569.
Byung-Sun JeonCollege of Pharmacy, University of Texas at Austin, Austin, TX 78712-1224.
William K RussellDepartment of Chemistry, Texas A&M University, College Station, TX 77842.
Hung-Wen LiuCollege of Pharmacy, University of Texas at Austin, Austin, TX 78712-1224.ORCID 0000-0001-8953-4794
David H RussellDepartment of Chemistry, Texas A&M University, College Station, TX 77842.
Kendall N HoukDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569; houk@chem.ucla.edu.

Funding

Three-Membered Ring Metabolites, Inhibition &FormationR01GM040541 · NIGMS · UNIVERSITY OF TEXAS AUSTIN · PI LIU, HUNG-WEN · 1989 to 2023
$7.4M
NIGMS NIH HHS R01 GM040541
6 · The paper itself

Abstract

SpnF is the first monofunctional Diels-Alder/[6+4]-ase that catalyzes a reaction leading to both Diels-Alder and [6+4] adducts through a single transition state. The environment-perturbed transition-state sampling method has been developed to calculate free energies, kinetic isotope effects, and quasi-classical reaction trajectories of enzyme-catalyzed reactions and the uncatalyzed reaction in water. Energetics calculated in this way reproduce the experiment and show that the normal Diels-Alder transition state is stabilized by H bonds with water molecules, while the ambimodal transition state is favored in the enzyme SpnF by both intramolecular hydrogen bonding and hydrophobic binding. Molecular dynamics simulations show that trajectories passing through the ambimodal transition state bifurcate to the [6+4] adduct and the Diels-Alder adduct with a ratio of 1:1 in the gas phase, 1:1.6 in water, and 1:11 in the enzyme. This example shows how an enzyme acts on a vibrational time scale to steer post-transition state trajectories toward the Diels-Alder adduct.

Indexed as

Bacterial ProteinsCatalysisCycloaddition ReactionHydrogen BondingHydrophobic and Hydrophilic InteractionsKineticsMacrolidesModels, ChemicalMolecular ConformationMolecular Dynamics SimulationQuantum TheorySaccharopolysporaSoftwareWaterBacterial ProteinsMacrolidesspinosyn AWaterenvironment-perturbed transition-state samplingpotential energy surface bifurcationSpnF enzymetime-resolved mechanism

Identifiers

PMID29348209
PMCPMC5798381

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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.