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Title: The structure of SpnF a standalone enzyme that catalyzes [4 + 2] cycloaddition

Journal Article · · Nature Chemical Biology
 [1];  [1];  [2];  [1];  [3];  [4]
  1. Univ. of Texas, Austin, TX (United States). Dept. of Molecular Biosciences
  2. Univ. of Texas, Austin, TX (United States). College of Pharmacy. Division of Medicinal Chemistry
  3. Univ. of Texas, Austin, TX (United States). College of Pharmacy. Division of Medicinal Chemistry. Dept. of Chemistry
  4. Univ. of Texas, Austin, TX (United States). Dept. of Molecular Biosciences. Dept. of Chemistry

In the biosynthetic pathway of the spinosyn insecticides, the tailoring enzyme SpnF performs a [4 + 2] cycloaddition on a 22-membered macrolactone to forge an embedded cyclohexene ring. To learn more about this reaction, which could potentially proceed through a Diels-Alder mechanism, in this paper we determined the 1.50-Å-resolution crystal structure of SpnF bound to S-adenosylhomocysteine. Finally, this sets the stage for advanced experimental and computational studies to determine the precise mechanism of SpnF-mediated cyclization.

Research Organization:
Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Inst. of Health (NIH) (United States); Welch Foundation (United States)
Grant/Contract Number:
AC02-06CH11357; GM106112; GM035906; GM040541; F-1712; F-1511
OSTI ID:
1177446
Journal Information:
Nature Chemical Biology, Vol. 11, Issue 4; ISSN 1552-4450
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 89 works
Citation information provided by
Web of Science

References (41)

The structures of type I polyketide synthases journal January 2012
Type II polyketide synthases: gaining a deeper insight into enzymatic teamwork journal January 2007
Structural basis for biosynthetic programming of fungal aromatic polyketide cyclization journal October 2009
Crystal structure and functional analysis of tetracenomycin ARO/CYC: Implications for cyclization specificity of aromatic polyketides journal April 2008
The Calicheamicin Gene Cluster and Its Iterative Type I Enediyne PKS journal August 2002
Mechanistic Insights into Polycycle Formation by Reductive Cyclization in Ikarugamycin Biosynthesis journal April 2014
The spinosyn family of insecticides: realizing the potential of natural products research journal February 2010
Enzyme-catalysed [4+2] cycloaddition is a key step in the biosynthesis of spinosyn A journal May 2011
Synthesen in der hydroaromatischen Reihe, IV. Mitteilung: Über die Anlagerung von Maleinsäure-anhydrid an arylierte Diene, Triene und Fulvene (Mitbearbeitet von Paul Pries) journal September 1929
Current developments and challenges in the search for a naturally selected Diels-Alderase journal April 2012
Insight into a natural Diels–Alder reaction from the structure of macrophomate synthase journal March 2003
Macrophomate Synthase:  QM/MM Simulations Address the Diels−Alder versus Michael−Aldol Reaction Mechanism
  • Guimarães, Cristiano Ruch Werneck; Udier-Blagović, Marina; Jorgensen, William L.
  • Journal of the American Chemical Society, Vol. 127, Issue 10 https://doi.org/10.1021/ja043905b
journal March 2005
The Putative Diels−Alderase Macrophomate Synthase is an Efficient Aldolase journal June 2008
Impact of scaffold rigidity on the design and evolution of an artificial Diels-Alderase journal May 2014
Chemoenzymatic Synthesis of Spinosyn A journal October 2014
Architectures, mechanisms and molecular evolution of natural product methyltransferases journal January 2012
Dali server: conservation mapping in 3D journal May 2010
Butenyl-spinosyns, a natural example of genetic engineering of antibiotic biosynthetic genes journal September 2005
UFF, a full periodic table force field for molecular mechanics and molecular dynamics simulations journal December 1992
Evaluation of DOCK 6 as a pose generation and database enrichment tool journal May 2012
Concerted, highly asynchronous, enzyme-catalyzed [4 + 2] cycloaddition in the biosynthesis of spinosyn A; computational evidence journal January 2012
Structure and Mechanism of the 6-Deoxyerythronolide B Synthase journal June 2007
XDS journal January 2010
Better models by discarding data? journal June 2013
Overview of the CCP 4 suite and current developments journal March 2011
Phaser crystallographic software journal July 2007
Automated macromolecular model building for X-ray crystallography using ARP/wARP version 7 journal June 2008
Coot model-building tools for molecular graphics journal November 2004
Refinement of Macromolecular Structures by the Maximum-Likelihood Method journal May 1997
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
3V: cavity, channel and cleft volume calculator and extractor journal May 2010
Avogadro: an advanced semantic chemical editor, visualization, and analysis platform journal August 2012
Mechanistic Insights into Polycycle Formation by Reductive Cyclization in Ikarugamycin Biosynthesis journal April 2014
Type II Polyketide Synthases: Gaining a Deeper Insight into Enzymatic Teamwork journal June 2007
A computational study on the interactions between a layered imine-based COF structure and selected anticancer drugs journal January 2021
Cavin1 intrinsically disordered domains are essential for fuzzy electrostatic interactions and caveola formation journal February 2021
Overview of the CCP4 suite and current developments. text January 2011
Chemoenzymatic Synthesis of Spinosyn A journal October 2014
PHENIX: a comprehensive Python-based system for macromolecular structure solution. text January 2010
MMFF VI. MMFF94s option for energy minimization studies journal May 1999
AutoDock Vina: Improving the speed and accuracy of docking with a new scoring function, efficient optimization, and multithreading journal January 2009

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Control of the Stereochemical Course of [4+2] Cycloaddition during trans -Decalin Formation by Fsa2-Family Enzymes journal July 2018
Cucurbit[7]uril as a Supramolecular Artificial Enzyme for Diels-Alder Reactions journal November 2017
A Pericyclic Reaction Cascade in Leporin Biosynthesis journal February 2018
Control of the Stereochemical Course of [4+2] Cycloaddition during trans -Decalin Formation by Fsa2-Family Enzymes journal July 2018
Strategies for Enhancing the Yield of the Potent Insecticide Spinosad in Actinomycetes journal July 2018
Biocatalytic Strategies towards [4+2] Cycloadditions journal March 2019
The Iboga Alkaloids book January 2017
Fungal biotransformation of tanshinone results in [4+2] cycloaddition with sorbicillinol: evidence for enzyme catalysis and increased antibacterial activity journal May 2016
Recent advances of Diels–Alderases involved in natural product biosynthesis journal June 2016
A chemocentric view of the natural product inventory journal August 2015
Structural basis for stereoselective dehydration and hydrogen-bonding catalysis by the SAM-dependent pericyclase LepI journal July 2019
Fungal indole alkaloid biogenesis through evolution of a bifunctional reductase/Diels–Alderase journal September 2019
The hidden enzymology of bacterial natural product biosynthesis journal June 2019
Unexpected enzyme-catalysed [4+2] cycloaddition and rearrangement in polyether antibiotic biosynthesis journal October 2019
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Crystal structure of LepI, a multifunctional SAM-dependent enzyme which catalyzes pericyclic reactions in leporin biosynthesis journal January 2019
Terpene synthases in disguise: enzymology, structure, and opportunities of non-canonical terpene synthases journal January 2020
Investigation of the mechanism of the SpnF-catalyzed [4+2]-cycloaddition reaction in the biosynthesis of spinosyn A journal September 2017
Influence of water and enzyme SpnF on the dynamics and energetics of the ambimodal [6+4]/[4+2] cycloaddition journal January 2018
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Heterologous Expression of Ilicicolin H Biosynthetic Gene Cluster and Production of a New Potent Antifungal Reagent, Ilicicolin J journal June 2019
Cucurbit[7]uril as a Supramolecular Artificial Enzyme for Diels-Alder Reactions journal November 2017
Fungal Indole Alkaloid Biogenesis Through Evolution of a Bifunctional Reductase/Diels-Alderase journal December 2018
Computational Insights into an Enzyme-Catalyzed [4+2] Cycloaddition journal November 2017
Decoding cyclase-dependent assembly of hapalindole and fischerindole alkaloids journal March 2017
Biosynthesis of Grandione: An Example of Tandem Hetero Diels-Alder/Retro-Claisen Rearrangement Reaction? journal September 2018