1
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He L, Zhu G. Regulation and application of quorum sensing on anaerobic digestion system. CHEMOSPHERE 2024; 363:142983. [PMID: 39089336 DOI: 10.1016/j.chemosphere.2024.142983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Revised: 07/29/2024] [Accepted: 07/29/2024] [Indexed: 08/03/2024]
Abstract
Quorum sensing (QS) plays an important role in the social behavior of microbial communities. Anaerobic digestion (AD) is a biological process using anaerobic microorganisms to degrade organic macromolecules into small molecules for biogas and biofertilizer production. In AD, the QS signaling molecule N-acyl homoserine lactones (AHLs) induces bacterial metabolism, improving AD process efficiency. However, there are fewer systematic reports about QS regulation of microbial behavior in AD. In this report, the effects of signaling molecules on extracellular polymer secretion, biofilm formation, granulation of granular sludge and bacterial metabolism in AD were investigated in detail. At present, the regulation behavior of QS on AD is a group phenomenon, and there are few in-depth studies on the regulation pathway. Therefore, we conducted an in-depth analysis of the pure culture system, granular sludge and reactor in the AD. Then we pointed out that the future application potential of QS in the AD may be combined with quorum quenching (QQ) and omics technology, which is of great significance for the future application of AD.
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Affiliation(s)
- Liyan He
- School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, PR China
| | - Gefu Zhu
- School of Chemistry and Life Resources, Renmin University of China, Beijing 100872, PR China.
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2
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Bejder BS, Monda F, Gless BH, Bojer MS, Ingmer H, Olsen CA. A short-lived peptide signal regulates cell-to-cell communication in Listeria monocytogenes. Commun Biol 2024; 7:942. [PMID: 39097633 PMCID: PMC11297923 DOI: 10.1038/s42003-024-06623-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 07/23/2024] [Indexed: 08/05/2024] Open
Abstract
Quorum sensing (QS) is a mechanism that regulates group behavior in bacteria, and in Gram-positive bacteria, the communication molecules are often cyclic peptides, called autoinducing peptides (AIPs). We recently showed that pentameric thiolactone-containing AIPs from Listeria monocytogenes, and from other species, spontaneously undergo rapid rearrangement to homodetic cyclopeptides, which hampers our ability to study the activity of these short-lived compounds. Here, we developed chemically modified analogues that closely mimic the native AIPs while remaining structurally intact, by introducing N-methylation or thioester-to-thioether substitutions. The stabilized AIP analogues exhibit strong QS agonism in L. monocytogenes and allow structure-activity relationships to be studied. Our data provide evidence to suggest that the most potent AIP is in fact the very short-lived thiolactone-containing pentamer. Further, we find that the QS system in L. monocytogenes is more promiscuous with respect to the structural diversity allowed for agonistic AIPs than reported for the more extensively studied QS systems in Staphylococcus aureus and Staphylococcus epidermidis. The developed compounds will be important for uncovering the biology of L. monocytogenes, and the design principles should be broadly applicable to the study of AIPs in other species.
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Affiliation(s)
- Benjamin S Bejder
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Fabrizio Monda
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Nuevolution A/S, Amgen Research Copenhagen, Copenhagen, Denmark
| | - Bengt H Gless
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Martin S Bojer
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Hanne Ingmer
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C, Denmark
| | - Christian A Olsen
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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3
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Ishida K, Litomska A, Dunbar KL, Hertweck C. An Enzymatic Prodrug-like Route to Thio and Selenoamides. Angew Chem Int Ed Engl 2024; 63:e202404243. [PMID: 38747847 DOI: 10.1002/anie.202404243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Indexed: 06/28/2024]
Abstract
6-Thioguanine (6TG) is a clinically used antitumor agent that was rationally designed as a DNA-targeting antimetabolite, but it also occurs naturally. 6TG is a critical virulence factor produced by Erwinia amylovorans, a notorious plant pathogen that causes fire blight of pome fruit trees. The biosynthesis of the rare thioamide metabolite involves an adenylating enzyme (YcfA) and a sulfur-mobilizing enzyme (YcfC), but the mechanism of sulfur transfer and putative intermediates have remained elusive. Through dissection and in vitro reconstitution of the thionation process using diverse substrates, we uncover an intermediate, prodrug-like thio-conjugate and elucidate the precise enzyme functions. YcfA not only adenylates GMP but also transfers the mercapto group of l-cysteine to the activated carbonyl. A designated C-S lyase (YcfC) then cleaves the resulting S-adduct to yield the thioamide. This pathway is distinct from canonical tRNA sulfur modifications and known enzymatic peptide thionations. By exploring a wide range of substrate surrogates, we exploited the tolerance of the enzyme pair to produce even a seleno analog. This study provides valuable insight into a previously unexplored area of bacterial thioamide formation and lays the groundwork for synthetic biology approaches to produce thioamide antimetabolites.
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Affiliation(s)
- Keishi Ishida
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Agnieszka Litomska
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Kyle L Dunbar
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Christian Hertweck
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
- Institute of Microbiology, Faculty of Biological Sciences, Friedrich Schiller University Jena, 07743, Jena, Germany
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4
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Patel KP, Chen WT, Delbecq L, Bruner SD. Alternative Linkage Chemistries in the Chemoenzymatic Synthesis of Microviridin-Based Cyclic Peptides. Org Lett 2024; 26:1138-1142. [PMID: 38306609 DOI: 10.1021/acs.orglett.3c04045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2024]
Abstract
Engineering biosynthetic pathways to ribosomally synthesized and post-translationally modified peptides (RiPPs) offers several advantages for both in vivo and in vitro applications. Here we probe the ability of peptide cyclases to generate trimacrocycle microviridin analogs with non-native cross-links. The results demonstrate that diverse chemistries are tolerated by macrocyclases in the ATP-grasp family and allow for the construction of unique cyclic peptide architectures that retain protease inhibition activity. In addition, cocomplex structures of analogs bound to a model protease were determined, illustrating how changes in functional groups maintain peptide conformation and target binding.
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Affiliation(s)
- Krishna P Patel
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Wen-Ting Chen
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Léa Delbecq
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Steven D Bruner
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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5
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West KHJ, Ma SV, Pensinger DA, Tucholski T, Tiambeng TN, Eisenbraun EL, Yehuda A, Hayouka Z, Ge Y, Sauer JD, Blackwell HE. Characterization of an Autoinducing Peptide Signal Reveals Highly Efficacious Synthetic Inhibitors and Activators of Quorum Sensing and Biofilm Formation in Listeria monocytogenes. Biochemistry 2023; 62:2878-2892. [PMID: 37699554 PMCID: PMC10676741 DOI: 10.1021/acs.biochem.3c00373] [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] [Indexed: 09/14/2023]
Abstract
Bacteria can use chemical signals to assess their local population density in a process called quorum sensing (QS). Many of these bacteria are common pathogens, including Gram-positive bacteria that utilize agr QS systems regulated by macrocyclic autoinducing peptide (AIP) signals. Listeria monocytogenes, an important foodborne pathogen, uses an agr system to regulate a variety of virulence factors and biofilm formation, yet little is known about the specific roles of agr in Listeria infection and its persistence in various environments. Herein, we report synthetic peptide tools that will enable the study of QS in Listeria. We identified a 6-mer AIP signal in L. monocytogenes supernatants and selected it as a scaffold around which a collection of non-native AIP mimics was designed and synthesized. These peptides were evaluated in cell-based agr reporter assays to generate structure-activity relationships for AIP-based agonism and antagonism in L. monocytogenes. We discovered synthetic agonists with increased potency relative to native AIP and a synthetic antagonist capable of reducing agr activity to basal levels. Notably, the latter peptide was able to reduce biofilm formation by over 90%, a first for a synthetic QS modulator in wild-type L. monocytogenes. The lead agr agonist and antagonist in L. monocytogenes were also capable of antagonizing agr signaling in the related pathogen Staphylococcus aureus, further extending their utility and suggesting different mechanisms of agr activation in these two pathogens. This study represents an important first step in the application of chemical methods to modulate QS and concomitant virulence outcomes in L. monocytogenes.
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Affiliation(s)
- Korbin H J West
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Stella V Ma
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Daniel A Pensinger
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, 1550 Linden Dr., Madison, Wisconsin 53706, United States
| | - Trisha Tucholski
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Timothy N Tiambeng
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Emma L Eisenbraun
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Avishag Yehuda
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Zvi Hayouka
- Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel
| | - Ying Ge
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Wisconsin Institute for Medical Research, 1111 Highland Ave., Madison, Wisconsin 53705, United States
| | - John-Demian Sauer
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, 1550 Linden Dr., Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
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6
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Polaske TJ, West KHJ, Zhao K, Widner DL, York JT, Blackwell HE. Chemical and biomolecular insights into the Staphylococcus aureus agr quorum sensing system: Current progress and ongoing challenges. Isr J Chem 2023; 63:e202200096. [PMID: 38765792 PMCID: PMC11101167 DOI: 10.1002/ijch.202200096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Indexed: 03/19/2023]
Abstract
Staphylococcus aureus is a ubiquitous bacterium that has become a major threat to human health due to its extensive toxin production and tremendous capacity for antibiotic resistance (e.g., MRSA "superbug" infections). Amid a worsening antibiotic resistance crisis, new strategies to combat this deadly microbe that remove the selective pressure of traditional approaches are in high demand. S. aureus utilizes an accessory gene regulator (agr) quorum sensing network to monitor its local cellular population and trigger a devastating communal attack, like an invading horde, once a threshold cell density has been reached. The role of the agr system in a range of disease types is still being unraveled. Herein, we discuss the present-day biochemical understanding of agr along with unresolved details, describe its connection to the progression of infection, and review how chemical strategies have been implemented to study and intercept this signaling pathway. This research is illuminating the potential of agr as an anti-virulence target in S. aureus and should inform the study of similar, yet less studied, agr systems in related bacterial pathogens.
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Affiliation(s)
- Thomas J. Polaske
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706 USA
| | - Korbin H. J. West
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706 USA
| | - Ke Zhao
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706 USA
| | - Danielle L. Widner
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706 USA
| | - Jordan T. York
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706 USA
| | - Helen E. Blackwell
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Ave., Madison, WI 53706 USA
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7
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Trunschke S, Piemontese E, Fuchs O, Abboud S, Seitz O. Enhancing Auxiliary-Mediated Native Chemical Ligation at Challenging Junctions with Pyridine Scaffolds. Chemistry 2022; 28:e202202065. [PMID: 36097325 PMCID: PMC10091703 DOI: 10.1002/chem.202202065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Indexed: 12/13/2022]
Abstract
To expand the scope of native chemical ligation (NCL) beyond reactions at cysteine, ligation auxiliaries are appended to the peptide N-terminus. After the introduction of a pyridine-containing auxiliary, which provided access to challenging junctions (proline or β-branched amino acids), we herein probe the role of the pyridine-ring nitrogen. We observed side reactions leading to preliminary auxiliary loss. We describe a new easy to attach β-mercapto-β-(4-methoxy-2-pyridinyl)-ethyl (MMPyE) auxiliary, which 1) has increased stability; 2) enables NCL at sterically encumbered junctions (e. g., Leu-Val); and 3) allows removal under mildly basic (pH 8.5) conditions was introduced. The synthesis of a 120 aa long peptide containing eight MUC5AC tandem repeats via ligation of two 60mers demonstrates the usefulness. Making use of hitherto unexplored NCL to tyrosine, the MMPyE auxiliary provided access to a head-to-tail-cyclized 21-mer peptide and a His6 -tagged hexaphosphorylated peptide comprising 6 heptapeptide repeats of the RNA polymerase II C-terminal domain.
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Affiliation(s)
- Sebastian Trunschke
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Emanuele Piemontese
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Olaf Fuchs
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Skander Abboud
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Oliver Seitz
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
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8
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Horch T, Molloy EM, Bredy F, Haensch VG, Scherlach K, Dunbar KL, Franke J, Hertweck C. Alternative Benzoxazole Assembly Discovered in Anaerobic Bacteria Provides Access to Privileged Heterocyclic Scaffold. Angew Chem Int Ed Engl 2022; 61:e202205409. [PMID: 35656913 PMCID: PMC9400959 DOI: 10.1002/anie.202205409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Indexed: 11/15/2022]
Abstract
Benzoxazole scaffolds feature prominently in diverse synthetic and natural product-derived pharmaceuticals. Our understanding of their bacterial biosynthesis is, however, limited to ortho-substituted heterocycles from actinomycetes. We report an overlooked biosynthetic pathway in anaerobic bacteria (typified in Clostridium cavendishii) that expands the benzoxazole chemical space to meta-substituted heterocycles and heralds a distribution beyond Actinobacteria. The first benzoxazoles from the anaerobic realm (closoxazole A and B) were elucidated by NMR and chemical synthesis. By genome editing in the native producer, heterologous expression in Escherichia coli, and systematic pathway dissection we show that closoxazole biosynthesis invokes an unprecedented precursor usage (3-amino-4-hydroxybenzoate) and manner of assembly. Synthetic utility was demonstrated by the precursor-directed biosynthesis of a tafamidis analogue. A bioinformatic survey reveals the pervasiveness of related gene clusters in diverse bacterial phyla.
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Affiliation(s)
- Therese Horch
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
| | - Evelyn M. Molloy
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
| | - Florian Bredy
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
| | - Veit G. Haensch
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
| | - Kirstin Scherlach
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
| | - Kyle L. Dunbar
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
| | - Jonathan Franke
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
| | - Christian Hertweck
- Deptartment of Biomolecular ChemistryLeibniz Institute of Natural Product Research and Infection Biology, HKIBeutenbergstrasse 11a07745JenaGermany
- Faculty of Biological SciencesFriedrich Schiller University Jena07743JenaGermany
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9
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Shi YM, Hirschmann M, Shi YN, Bode HB. Cleavage Off-Loading and Post-assembly-Line Conversions Yield Products with Unusual Termini during Biosynthesis. ACS Chem Biol 2022; 17:2221-2228. [PMID: 35860925 PMCID: PMC9396620 DOI: 10.1021/acschembio.2c00367] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Piscibactins and photoxenobactins are metallophores and
virulence
factors, whose biosynthetic gene cluster, termed pxb, is the most prevalent polyketide synthase/non-ribosomal peptide
synthetase hybrid cluster across entomopathogenic bacteria. They are
structurally similar to yersiniabactin, which contributes to the virulence
of the human pathogen Yersinia pestis. However, the pxb-derived products feature various
chain lengths and unusual carboxamide, thiocarboxylic acid, and dithioperoxoate
termini, which are rarely found in thiotemplated biosyntheses. Here,
we characterize the pxb biosynthetic logic by gene
deletions, site-directed mutagenesis, and isotope labeling experiments.
Notably, we propose that it involves (1) heterocyclization domains
with various catalytic efficiencies catalyzing thiazoline and amide/thioester
bond formation and (2) putative C–N and C–S bond cleavage
off-loading manners, which lead to products with different chain lengths
and usual termini. Additionally, the post-assembly-line spontaneous
conversions of the biosynthetic end product contribute to production
titers of the other products in the culture medium. This study broadens
our knowledge of thiotemplated biosynthesis and how bacterial host
generate a chemical arsenal.
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Affiliation(s)
- Yi-Ming Shi
- Department of Natural Products in Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany.,Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
| | - Merle Hirschmann
- Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
| | - Yan-Ni Shi
- Department of Natural Products in Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany.,Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
| | - Helge B Bode
- Department of Natural Products in Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany.,Molecular Biotechnology, Department of Biosciences, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany.,Chemical Biology, Department of Chemistry, Philipps University Marburg, 35043 Marburg, Germany.,Senckenberg Gesellschaft für Naturforschung, 60325 Frankfurt am Main, Germany
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10
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Horch T, Molloy EM, Bredy F, Haensch VG, Scherlach K, Dunbar KL, Franke J, Hertweck C. Alternative Benzoxazole Assembly Discovered in Anaerobic Bacteria Provides Access to Privileged Heterocyclic Scaffold. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Therese Horch
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut Biomolecular Chemistry GERMANY
| | - Evelyn M. Molloy
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut Biomolecular Chemistry GERMANY
| | - Florian Bredy
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut Biomolecular Chemistry GERMANY
| | - Veit G. Haensch
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut Biomolecular Chemistry GERMANY
| | - Kirstin Scherlach
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut Biomolecular Chemistry GERMANY
| | - Kyle L. Dunbar
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut Biomolecular Chemistry GERMANY
| | - Jonathan Franke
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut Biomolecular Chemistry GERMANY
| | - Christian Hertweck
- Leibniz Institute for Natural Product Research and Infection Biology, HKI Department of Biomolecular Chemistry Beutenbergstr. 11a 07745 Jena GERMANY
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11
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Nagano M, Ishida S, Suga H. Inner residues of macrothiolactone in autoinducer peptides-I/IV circumvents S-to-O acyl transfer to the upstream serine residue. RSC Chem Biol 2022; 3:295-300. [PMID: 35359496 PMCID: PMC8905530 DOI: 10.1039/d1cb00225b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/23/2022] [Indexed: 11/21/2022] Open
Abstract
Autoinducing peptides I and IV (AIP-I/IV) are naturally occurring cyclic thiodepsipeptides (CTPs) bearing a Ser–Thr–Cys–Asp/Tyr (STC[D/Y]) tetrapeptide motif, where the Cys thiol (HSC) in the side-chain is linked to the Met C-terminal carboxylic acid (MCOOH) to form 5-residue macrothiolactones,−SC(D/Y)FIMCO−. We have recently reported that CTPs containing SX1CX2 motifs spontaneously undergo macrolactonization to yield cyclic depsipeptides (CDPs) by an unprecedented rapid S-to-O acyl transfer to the upstream Ser hydroxyl group. Interestingly, even though the STC[D/Y] motif in AIP-I/IV is a member of the SX1CX2 motif family, it maintains the CTP form. This suggests that AIP-I/IV have a structural or chemical motive for avoiding such an S-to-O acyl transfer, thus retaining the CTP form intact. Here we have used genetic code reprogramming to ribosomally synthesize various AIP-I analogs and studied what the determinant is to control the formation of CTP vs. CDP products. The study revealed that a Gly substitution of the inner Asp/Tyr or Met residues in the thiolactone drastically alters the resistance to the promotion of the S-to-O acyl transfer, giving the corresponding CDP product. This suggests that the steric hindrances originating from the α-substituted sidechain in these two amino acids in the AIP-I/IV thiolactone likely play a critical role in controlling the resistance against macrolactone rearrangement to the upstream Ser residue. In AIP-I/IV, single Gly mutation at the thiolactone induces S-to-O acyl shift to yield a corresponding ring-expanded lactone form.![]()
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Affiliation(s)
- Masanobu Nagano
- Graduate School of Science, The University of Tokyo 113-0033 Japan
| | - Satoshi Ishida
- Graduate School of Science, The University of Tokyo 113-0033 Japan
| | - Hiroaki Suga
- Graduate School of Science, The University of Tokyo 113-0033 Japan
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12
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Gless BH, Bejder BS, Monda F, Bojer MS, Ingmer H, Olsen CA. Rearrangement of Thiodepsipeptides by S → N Acyl Shift Delivers Homodetic Autoinducing Peptides. J Am Chem Soc 2021; 143:10514-10518. [PMID: 34228933 DOI: 10.1021/jacs.1c02614] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Group behavior in many bacteria relies on chemically induced communication called quorum sensing (QS), which plays important roles in the regulation of colonization, biofilm formation, and virulence. In Gram-positive bacteria, QS is often mediated by cyclic ribosomally synthesized and posttranslationally modified peptides (RiPPs). In staphylococci, for example, most of these so-called autoinducing peptides (AIPs) contain a conserved thiolactone functionality, which has also been predicted to constitute a structural feature of AIPs from other genera. Here, we show that pentameric AIPs from Lactiplantibacillus plantarum, Clostridium perfringens, and Listeria monocytogenes that were previously presumed to be thiolactone-containing structures readily rearrange to become homodetic cyclopeptides. This finding has implications for the developing understanding of cross-species and potential cross-genus communication of bacteria and may help guide the discovery of peptide ligands to perturb their function.
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Affiliation(s)
- Bengt H Gless
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Benjamin S Bejder
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Fabrizio Monda
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Martin S Bojer
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Stigbøjlen 4, DK-1870 Frederiksberg C, Denmark
| | - Hanne Ingmer
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Stigbøjlen 4, DK-1870 Frederiksberg C, Denmark
| | - Christian A Olsen
- Center for Biopharmaceuticals and Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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Molloy EM, Dell M, Hänsch VG, Dunbar KL, Feldmann R, Oberheide A, Seyfarth L, Kumpfmüller J, Horch T, Arndt HD, Hertweck C. Enzyme-Primed Native Chemical Ligation Produces Autoinducing Cyclopeptides in Clostridia. Angew Chem Int Ed Engl 2021; 60:10670-10679. [PMID: 33625794 PMCID: PMC8251862 DOI: 10.1002/anie.202016378] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Indexed: 12/14/2022]
Abstract
Clostridia coordinate many important processes such as toxin production, infection, and survival by density‐dependent communication (quorum sensing) using autoinducing peptides (AIPs). Although clostridial AIPs have been proposed to be (thio)lactone‐containing peptides, their true structures remain elusive. Here, we report the genome‐guided discovery of an AIP that controls endospore formation in Ruminiclostridium cellulolyticum. Through a combination of chemical synthesis and chemical complementation assays with a mutant strain, we reveal that the genuine chemical mediator is a homodetic cyclopeptide (cAIP). Kinetic analyses indicate that the mature cAIP is produced via a cryptic thiolactone intermediate that undergoes a rapid S→N acyl shift, in a manner similar to intramolecular native chemical ligation (NCL). Finally, by implementing a chemical probe in a targeted screen, we show that this novel enzyme‐primed, intramolecular NCL is a widespread feature of clostridial AIP biosynthesis.
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Affiliation(s)
- Evelyn M Molloy
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Maria Dell
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Veit G Hänsch
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Kyle L Dunbar
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Romy Feldmann
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Ansgar Oberheide
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743, Jena, Germany
| | - Lydia Seyfarth
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743, Jena, Germany
| | - Jana Kumpfmüller
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Therese Horch
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany
| | - Hans-Dieter Arndt
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstr. 10, 07743, Jena, Germany
| | - Christian Hertweck
- Dept. of Biomolecular Chemistry, Leibniz Institute for Natural, Product Research and Infection Biology, HKI, Beutenbergstr. 11a, 07745, Jena, Germany.,Faculty of Biological Sciences, Friedrich Schiller University Jena, 07743, Jena, Germany
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