1
|
Wang S, Maglangit F, Fang Q, Kyeremeh K, Deng H. Characterization of the Baeyer-Villiger monooxygenase in the pathway of the bacterial pyrrolizidine alkaloids, legonmycins. RSC Chem Biol 2024:d4cb00186a. [PMID: 39386343 PMCID: PMC11457151 DOI: 10.1039/d4cb00186a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2024] [Accepted: 09/27/2024] [Indexed: 10/12/2024] Open
Abstract
The Baeyer-Villiger monooxygenase (BVMO), LgnC, plays a crucial role in the biosynthesis of bacterial pyrrolizidine alkaloids, legonmycins. It processes bicyclic indolizidine substrates generated from the coordinative action of two non-ribosomal peptide synthetases (LgnB and LgnD) and the standalone type II thioesterase-like enzyme (LgnA). It has been demonstrated that the enzyme selectively inserts molecular oxygen into the carbon-carbon bond adjacent to the carbonyl group in legonindolizidines to form bicyclic 1,3-oxazepine carbamate intermediates. After ring opening and contraction, the most advanced products, prelegonmycins, are formed. However, factors controlling the final hydroxylation step and how the enzyme handles the substrates have remained elusive. In this study, we show that the final hydroxylation at the activated carbon of the electron-rich pyrrole system is attributed to either spontaneous oxidation or the action of an endogenous redox reagent. Substrate docking on the structural model of LgnC combined with site-directed mutagenesis allows the identification of several key amino acids that are essential for substrate/intermediate binding and a mechanism of LgnC-catalysed transformation is proposed.
Collapse
Affiliation(s)
- Shan Wang
- State Key Laboratory of Microbial Technology, Shandong University Qingdao 266237 China
- Department of Chemistry, School of Natural and Computing Sciences, University of Aberdeen Aberdeen AB24 3UE UK
| | - Fleurdeliz Maglangit
- Department of Biology and Environmental Science, College of Science, University of the Philippines Cebu Lahug Cebu City 6000 Philippines
| | - Qing Fang
- Department of Chemistry, School of Natural and Computing Sciences, University of Aberdeen Aberdeen AB24 3UE UK
| | - Kwaku Kyeremeh
- Marine and Plant Research Laboratory of Ghana, Department of Chemistry, University of Ghana P.O. Box LG56 Legon-Accra Ghana
| | - Hai Deng
- Department of Chemistry, School of Natural and Computing Sciences, University of Aberdeen Aberdeen AB24 3UE UK
| |
Collapse
|
2
|
Wang S, Wu K, Tang YJ, Deng H. Dehydroamino acid residues in bioactive natural products. Nat Prod Rep 2024; 41:273-297. [PMID: 37942836 PMCID: PMC10880069 DOI: 10.1039/d3np00041a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Indexed: 11/10/2023]
Abstract
Covering: 2000 to up to 2023α,β-Dehydroamino acids (dhAAs) are unsaturated nonproteinogenic amino acids found in a wide array of naturally occurring peptidyl metabolites, predominantly those from bacteria. Other organisms, such as fungi, higher plants and marine invertebrates, have also been found to produce dhAA-containing peptides. The α,β-unsaturation in dhAAs has profound effects on the properties of these molecules. They display significant synthetic flexibility, readily undergoing reactions such as Michael additions, transition-metal-catalysed cross-couplings, and cycloadditions. These residues in peptides/proteins also exhibit great potential in bioorthogonal applications using click chemistry. Peptides containing contiguous dhAA residues have been extensively investigated in the field of foldamers, self-assembling supermolecules that mimic biomacromolecules such as proteins to fold into well-defined conformations. dhAA residues in these peptidyl materials tend to form a 2.05-helix. As a result, stretches of dhAA residues arrange in an extended conformation. In particular, peptidyl foldamers containing β-enamino acid units display interesting conformational, electronic, and supramolecular aggregation properties that can be modulated by light-dependent E-Z isomerization. Among approximately 40 dhAAs found in the natural product inventory, dehydroalanine (Dha) and dehydrobutyrine (Dhb) are the most abundant. Dha is the simplest dehydro-α-amino acid, or α-dhAA, without any geometrical isomers, while its re-arranged isomer, 3-aminoacrylic acid (Aaa or ΔβAla), is the simplest dehydro-β-amino acid, or β-enamino acid, and displays E/Z isomerism. Dhb is the simplest α-dhAA that exhibits E/Z isomerism. The Z-isomer of Dhb (Z-Dhb) is sterically favourable and is present in the majority of naturally occurring peptides containing Dhb residues. Dha and Z-Dhb motifs are commonly found in ribosomally synthesized and post-translationally modified peptides (RiPPs). In the last decade, the formation of Dha and Dhb motifs in RiPPs has been extensively investigated, which will be briefly discussed in this review. The formation of other dhAA residues in natural products (NPs) is, however, less understood. In this review, we will discuss recent advances in the biosynthesis of peptidyl NPs containing unusual dhAA residues and cryptic dhAA residues. The proposed biosynthetic pathways of these natural products will also be discussed.
Collapse
Affiliation(s)
- Shan Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China.
| | - Kewen Wu
- Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK.
| | - Ya-Jie Tang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China.
| | - Hai Deng
- Department of Chemistry, University of Aberdeen, Aberdeen AB24 3UE, UK.
| |
Collapse
|
3
|
Jayawickreme K, Świstak D, Ozimek E, Reszczyńska E, Rysiak A, Makuch-Kocka A, Hanaka A. Pyrrolizidine Alkaloids-Pros and Cons for Pharmaceutical and Medical Applications. Int J Mol Sci 2023; 24:16972. [PMID: 38069294 PMCID: PMC10706944 DOI: 10.3390/ijms242316972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Heterocyclic organic compounds named pyrrolizidine alkaloids (PAs) belong to a group of alkaloids and are synthesized by either plants or microorganisms. Therefore, they are naturally occurring secondary metabolites. They are found in species applied in the pharmaceutical and food industries, thus a thorough knowledge of their pharmacological properties and toxicology to humans is of great importance for their further safe employment. This review is original because it synthesizes knowledge of plant and microbial PAs, which is unusual in the scientific literature. We have focused on the Boraginaceae family, which is unique due to the exceptional richness and diversity of its PAs in plant species. We have also presented the microbial sources of PAs, both from fungi and bacteria. The structure and metabolism of PAs have been discussed. Our main aim was to summarize the effects of PAs on humans, including both negative, toxic ones, mainly concerning hepatotoxicity and carcinogenicity, as well as potentially positive ones for pharmacological and medical applications. We have collected the results of studies on the anticancer activity of PAs from plant and microbial sources (mainly Streptomyces strains) and on the antimicrobial activity of PAs on different strains of microorganisms (bacteria and fungi). Finally, we have suggested potential applications and future perspectives.
Collapse
Affiliation(s)
- Kavindi Jayawickreme
- Student Scientific Club of Phytochemists, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka St. 19, 20-033 Lublin, Poland
| | - Dawid Świstak
- Student Scientific Club of Phytochemists, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka St. 19, 20-033 Lublin, Poland
| | - Ewa Ozimek
- Department of Industrial and Environmental Microbiology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka St. 19, 20-033 Lublin, Poland
| | - Emilia Reszczyńska
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Chodźki St. 1, 20-093 Lublin, Poland
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka St. 19, 20-033 Lublin, Poland
| | - Anna Rysiak
- Department of Botany, Mycology, and Ecology, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka St. 19, 20-033 Lublin, Poland
| | - Anna Makuch-Kocka
- Department of Pharmacology, Medical University of Lublin, Radziwiłłowska St. 11, 20-080 Lublin, Poland
| | - Agnieszka Hanaka
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, Akademicka St. 19, 20-033 Lublin, Poland
| |
Collapse
|
4
|
Wang S, Fang Q, Lu Z, Gao Y, Trembleau L, Ebel R, Andersen JH, Philips C, Law S, Deng H. Discovery and Biosynthetic Investigation of a New Antibacterial Dehydrated Non‐Ribosomal Tripeptide. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012902] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Shan Wang
- Marine Biodiscovery Centre Department of Chemistry University of Aberdeen Meston Walk Aberdeen AB24 3UE Scotland UK
| | - Qing Fang
- Marine Biodiscovery Centre Department of Chemistry University of Aberdeen Meston Walk Aberdeen AB24 3UE Scotland UK
| | - Zhou Lu
- Marine Biodiscovery Centre Department of Chemistry University of Aberdeen Meston Walk Aberdeen AB24 3UE Scotland UK
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application State Key Laboratory of Applied Microbiology Southern China Guangdong Institute of Microbiology Guangdong Academy of Sciences China
| | - Yingli Gao
- Marine Biodiscovery Centre Department of Chemistry University of Aberdeen Meston Walk Aberdeen AB24 3UE Scotland UK
- College of Marine Life and Fisheries Jiangsu Ocean University Lianyungang Jiangsu Province China
| | - Laurent Trembleau
- Marine Biodiscovery Centre Department of Chemistry University of Aberdeen Meston Walk Aberdeen AB24 3UE Scotland UK
| | - Rainer Ebel
- Marine Biodiscovery Centre Department of Chemistry University of Aberdeen Meston Walk Aberdeen AB24 3UE Scotland UK
| | | | - Carol Philips
- NCIMB Ltd. Ferguson Building, Craibstone Estate, Bucksburn Aberdeen AB21 9YA Scotland UK
| | - Samantha Law
- NCIMB Ltd. Ferguson Building, Craibstone Estate, Bucksburn Aberdeen AB21 9YA Scotland UK
| | - Hai Deng
- Marine Biodiscovery Centre Department of Chemistry University of Aberdeen Meston Walk Aberdeen AB24 3UE Scotland UK
| |
Collapse
|
5
|
Wang S, Fang Q, Lu Z, Gao Y, Trembleau L, Ebel R, Andersen JH, Philips C, Law S, Deng H. Discovery and Biosynthetic Investigation of a New Antibacterial Dehydrated Non-Ribosomal Tripeptide. Angew Chem Int Ed Engl 2020; 60:3229-3237. [PMID: 33107670 DOI: 10.1002/anie.202012902] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Indexed: 11/07/2022]
Abstract
Dehydroalanine (Dha) and dehydrobutyrine (Dhb) display considerable flexibility in a variety of chemical and biological reactions. Natural products containing Dha and/or Dhb residues are often found to display diverse biological activities. While the (Z) geometry is predominant in nature, only a handful of metabolites containing (E)-Dhb have been found thus far. Here we report discovery of a new antimicrobial peptide, albopeptide, through NMR analysis and chemical synthesis, which contains two contiguous unsaturated residues, Dha-(E)-Dhb. It displays narrow-spectrum activity against vancomycin-resistant Enterococcus faecium. In-vitro biochemical assays show that albopeptide originates from a noncanonical NRPS pathway featuring dehydration processes and catalysed by unusual condensation domains. Finally, we provide evidence of the occurrence of a previously untapped group of short unsaturated peptides in the bacterial kingdom, suggesting an important biological function in bacteria.
Collapse
Affiliation(s)
- Shan Wang
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK
| | - Qing Fang
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK
| | - Zhou Lu
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, China
| | - Yingli Gao
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK.,College of Marine Life and Fisheries, Jiangsu Ocean University, Lianyungang, Jiangsu Province, China
| | - Laurent Trembleau
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK
| | - Rainer Ebel
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK
| | | | - Carol Philips
- NCIMB Ltd., Ferguson Building, Craibstone Estate, Bucksburn, Aberdeen, AB21 9YA, Scotland, UK
| | - Samantha Law
- NCIMB Ltd., Ferguson Building, Craibstone Estate, Bucksburn, Aberdeen, AB21 9YA, Scotland, UK
| | - Hai Deng
- Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, AB24 3UE, Scotland, UK
| |
Collapse
|
6
|
Hong Z, Bolard A, Giraud C, Prévost S, Genta‐Jouve G, Deregnaucourt C, Häussler S, Jeannot K, Li Y. Azetidine‐Containing Alkaloids Produced by a Quorum‐Sensing Regulated Nonribosomal Peptide Synthetase Pathway in
Pseudomonas aeruginosa. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201809981] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhilai Hong
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM)Muséum National d'Histoire Naturelle (MNHN)Centre National de la Recherche Scientifique (CNRS), CP 54 57 rue Cuvier 75005 Paris France
| | - Arnaud Bolard
- Laboratoire de BactériologieCentre National de Référence (CNR) de la Résistance aux Antibiotiques, Centre Hospitalier Régional Universitaire (CHRU) de Besançon, UMR4269 “Chrono-Environnement” Boulevard Fleming 25030 Besançon France
| | - Caroline Giraud
- U2RM Stress/VirulenceNormandy University, UNICAEN 14000 Caen France
| | - Sébastien Prévost
- Laboratoire de Synthèse Organique, UMR 7652CNRS, Ecole PolytechniqueENSTA ParisTechUniversité Paris-Saclay 828 Bd des Maréchaux 91128 Palaiseau France
| | - Grégory Genta‐Jouve
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM)Muséum National d'Histoire Naturelle (MNHN)Centre National de la Recherche Scientifique (CNRS), CP 54 57 rue Cuvier 75005 Paris France
- C-TAC, UMR 8638, CNRSFaculté de Pharmacie de ParisUniversité Paris Descartes, Sorbonne Paris Cité 4 Avenue de l'Observatoire 75006 Paris France
| | - Christiane Deregnaucourt
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM)Muséum National d'Histoire Naturelle (MNHN)Centre National de la Recherche Scientifique (CNRS), CP 54 57 rue Cuvier 75005 Paris France
| | - Susanne Häussler
- Institute for Molecular Bacteriology, TWINCORECentre for Experimental and Clinical Infection Research Hannover Germany
- Department of Molecular BacteriologyHelmholtz Centre for Infection Research Braunschweig Germany
| | - Katy Jeannot
- Laboratoire de BactériologieCentre National de Référence (CNR) de la Résistance aux Antibiotiques, Centre Hospitalier Régional Universitaire (CHRU) de Besançon, UMR4269 “Chrono-Environnement” Boulevard Fleming 25030 Besançon France
| | - Yanyan Li
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM)Muséum National d'Histoire Naturelle (MNHN)Centre National de la Recherche Scientifique (CNRS), CP 54 57 rue Cuvier 75005 Paris France
| |
Collapse
|
7
|
Hong Z, Bolard A, Giraud C, Prévost S, Genta-Jouve G, Deregnaucourt C, Häussler S, Jeannot K, Li Y. Azetidine-Containing Alkaloids Produced by a Quorum-Sensing Regulated Nonribosomal Peptide Synthetase Pathway in Pseudomonas aeruginosa. Angew Chem Int Ed Engl 2019; 58:3178-3182. [PMID: 30548135 DOI: 10.1002/anie.201809981] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/08/2018] [Indexed: 12/26/2022]
Abstract
Pseudomonas aeruginosa displays an impressive metabolic versatility, which ensures its survival in diverse environments. Reported herein is the identification of rare azetidine-containing alkaloids from P. aeruginosa PAO1, termed azetidomonamides, which are derived from a conserved, quorum-sensing regulated nonribosomal peptide synthetase (NRPS) pathway. Biosynthesis of the azetidine motif has been elucidated by gene inactivation, feeding experiments, and biochemical characterization in vitro, which involves a new S-adenosylmethionine-dependent enzyme to produce azetidine 2-carboxylic acid as an unusual building block of NRPS. The mutants of P. aeruginosa unable to produce azetidomonamides had an advantage in growth at high cell density in vitro and displayed rapid virulence in Galleria mellonella model, inferring functional roles of azetidomonamides in the host adaptation. This work opens the avenue to study the biological functions of azetidomonamides and related compounds in pathogenic and environmental bacteria.
Collapse
Affiliation(s)
- Zhilai Hong
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), CP 54, 57 rue Cuvier, 75005, Paris, France
| | - Arnaud Bolard
- Laboratoire de Bactériologie, Centre National de Référence (CNR) de la Résistance aux Antibiotiques, Centre Hospitalier Régional Universitaire (CHRU) de Besançon, UMR4269 "Chrono-Environnement", Boulevard Fleming, 25030, Besançon, France
| | - Caroline Giraud
- U2RM Stress/Virulence, Normandy University, UNICAEN, 14000, Caen, France
| | - Sébastien Prévost
- Laboratoire de Synthèse Organique, UMR 7652, CNRS, Ecole Polytechnique, ENSTA ParisTech, Université Paris-Saclay, 828 Bd des Maréchaux, 91128, Palaiseau, France
| | - Grégory Genta-Jouve
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), CP 54, 57 rue Cuvier, 75005, Paris, France.,C-TAC, UMR 8638, CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 Avenue de l'Observatoire, 75006, Paris, France
| | - Christiane Deregnaucourt
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), CP 54, 57 rue Cuvier, 75005, Paris, France
| | - Susanne Häussler
- Institute for Molecular Bacteriology, TWINCORE, Centre for Experimental and Clinical Infection Research, Hannover, Germany.,Department of Molecular Bacteriology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Katy Jeannot
- Laboratoire de Bactériologie, Centre National de Référence (CNR) de la Résistance aux Antibiotiques, Centre Hospitalier Régional Universitaire (CHRU) de Besançon, UMR4269 "Chrono-Environnement", Boulevard Fleming, 25030, Besançon, France
| | - Yanyan Li
- Unité Molécules de Communication et Adaptation des Microorganismes (MCAM), Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), CP 54, 57 rue Cuvier, 75005, Paris, France
| |
Collapse
|
8
|
Lin CI, McCarty RM, Liu HW. The Enzymology of Organic Transformations: A Survey of Name Reactions in Biological Systems. Angew Chem Int Ed Engl 2017; 56:3446-3489. [PMID: 27505692 PMCID: PMC5477795 DOI: 10.1002/anie.201603291] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Indexed: 01/05/2023]
Abstract
Chemical reactions that are named in honor of their true, or at least perceived, discoverers are known as "name reactions". This Review is a collection of biological representatives of named chemical reactions. Emphasis is placed on reaction types and catalytic mechanisms that showcase both the chemical diversity in natural product biosynthesis as well as the parallels with synthetic organic chemistry. An attempt has been made, whenever possible, to describe the enzymatic mechanisms of catalysis within the context of their synthetic counterparts and to discuss the mechanistic hypotheses for those reactions that are currently active areas of investigation. This Review has been categorized by reaction type, for example condensation, nucleophilic addition, reduction and oxidation, substitution, carboxylation, radical-mediated, and rearrangements, which are subdivided by name reactions.
Collapse
Affiliation(s)
- Chia-I Lin
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and Department of Chemistry, University of Texas at Austin, Austin, TX, 78731, USA
| | - Reid M McCarty
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and Department of Chemistry, University of Texas at Austin, Austin, TX, 78731, USA
| | - Hung-Wen Liu
- Division of Chemical Biology and Medicinal Chemistry, College of Pharmacy, and Department of Chemistry, University of Texas at Austin, Austin, TX, 78731, USA
| |
Collapse
|
9
|
Lin C, McCarty RM, Liu H. Die Enzymologie organischer Umwandlungen: Namensreaktionen in biologischen Systemen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201603291] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Chia‐I. Lin
- Division of Chemical Biology and Medicinal Chemistry College of Pharmacy, and Department of Chemistry University of Texas at Austin Austin TX 78731 USA
| | - Reid M. McCarty
- Division of Chemical Biology and Medicinal Chemistry College of Pharmacy, and Department of Chemistry University of Texas at Austin Austin TX 78731 USA
| | - Hung‐wen Liu
- Division of Chemical Biology and Medicinal Chemistry College of Pharmacy, and Department of Chemistry University of Texas at Austin Austin TX 78731 USA
| |
Collapse
|
10
|
|
11
|
Klapper M, Götze S, Barnett R, Willing K, Stallforth P. Bacterial Alkaloids Prevent Amoebal Predation. Angew Chem Int Ed Engl 2016; 55:8944-7. [PMID: 27294402 DOI: 10.1002/anie.201603312] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 01/20/2023]
Abstract
Bacterial defense mechanisms have evolved to protect bacteria against predation by nematodes, predatory bacteria, or amoebae. We identified novel bacterial alkaloids (pyreudiones A-D) that protect the producer, Pseudomonas fluorescens HKI0770, against amoebal predation. Isolation, structure elucidation, total synthesis, and a proposed biosynthetic pathway for these structures are presented. The generation of P. fluorescens gene-deletion mutants unable to produce pyreudiones rendered the bacterium edible to a variety of soil-dwelling amoebae.
Collapse
Affiliation(s)
- Martin Klapper
- Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany.,Junior Research Group Chemistry of Microbial Communication, Jena, Germany
| | - Sebastian Götze
- Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany.,Junior Research Group Chemistry of Microbial Communication, Jena, Germany
| | - Robert Barnett
- Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany.,Junior Research Group Chemistry of Microbial Communication, Jena, Germany
| | - Karsten Willing
- Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany.,Bio Pilot Plant, Jena, Germany
| | - Pierre Stallforth
- Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany. .,Junior Research Group Chemistry of Microbial Communication, Jena, Germany.
| |
Collapse
|