1
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Zhang M, Peng Z, Huang Z, Fang J, Li X, Qiu X. Functional Diversity and Engineering of the Adenylation Domains in Nonribosomal Peptide Synthetases. Mar Drugs 2024; 22:349. [PMID: 39195464 DOI: 10.3390/md22080349] [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: 07/04/2024] [Revised: 07/23/2024] [Accepted: 07/27/2024] [Indexed: 08/29/2024] Open
Abstract
Nonribosomal peptides (NRPs) are biosynthesized by nonribosomal peptide synthetases (NRPSs) and are widely distributed in both terrestrial and marine organisms. Many NRPs and their analogs are biologically active and serve as therapeutic agents. The adenylation (A) domain is a key catalytic domain that primarily controls the sequence of a product during the assembling of NRPs and thus plays a predominant role in the structural diversity of NRPs. Engineering of the A domain to alter substrate specificity is a potential strategy for obtaining novel NRPs for pharmaceutical studies. On the basis of introducing the catalytic mechanism and multiple functions of the A domains, this article systematically describes several representative NRPS engineering strategies targeting the A domain, including mutagenesis of substrate-specificity codes, substitution of condensation-adenylation bidomains, the entire A domain or its subdomains, domain insertion, and whole-module rearrangements.
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Affiliation(s)
- Mengli Zhang
- College of Food Science and Engineering, Ningbo University, Ningbo 315800, China
| | - Zijing Peng
- College of Food Science and Engineering, Ningbo University, Ningbo 315800, China
| | - Zhenkuai Huang
- College of Food Science and Engineering, Ningbo University, Ningbo 315800, China
| | - Jiaqi Fang
- College of Food Science and Engineering, Ningbo University, Ningbo 315800, China
| | - Xinhai Li
- College of Food Science and Engineering, Ningbo University, Ningbo 315800, China
| | - Xiaoting Qiu
- College of Food Science and Engineering, Ningbo University, Ningbo 315800, China
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2
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Puja H, Bianchetti L, Revol-Tissot J, Simon N, Shatalova A, Nommé J, Fritsch S, Stote RH, Mislin GLA, Potier N, Dejaegere A, Rigouin C. Biosynthesis of a clickable pyoverdine via in vivo enzyme engineering of an adenylation domain. Microb Cell Fact 2024; 23:207. [PMID: 39044227 PMCID: PMC11267755 DOI: 10.1186/s12934-024-02472-4] [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: 05/15/2024] [Accepted: 07/07/2024] [Indexed: 07/25/2024] Open
Abstract
The engineering of non ribosomal peptide synthetases (NRPS) for new substrate specificity is a potent strategy to incorporate non-canonical amino acids into peptide sequences, thereby creating peptide diversity and broadening applications. The non-ribosomal peptide pyoverdine is the primary siderophore produced by Pseudomonas aeruginosa and holds biomedical promise in diagnosis, bio-imaging and antibiotic vectorization. We engineered the adenylation domain of PvdD, the terminal NRPS in pyoverdine biosynthesis, to accept a functionalized amino acid. Guided by molecular modeling, we rationally designed mutants of P. aeruginosa with mutations at two positions in the active site. A single amino acid change results in the successful incorporation of an azido-L-homoalanine leading to the synthesis of a new pyoverdine analog, functionalized with an azide function. We further demonstrated that copper free click chemistry is efficient on the functionalized pyoverdine and that the conjugated siderophore retains the iron chelation properties and its capacity to be recognized and transported by P. aeruginosa. The production of clickable pyoverdine holds substantial biotechnological significance, paving the way for numerous downstream applications.
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Affiliation(s)
- Hélène Puja
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
- Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
| | - Laurent Bianchetti
- Département de Biologie structurale intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de La Santé et de La Recherche Médicale (INSERM), U1258/Centre National de Recherche Scientifique (CNRS), UMR7104/Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Johan Revol-Tissot
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
- Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
| | - Nicolas Simon
- Département de Biologie structurale intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de La Santé et de La Recherche Médicale (INSERM), U1258/Centre National de Recherche Scientifique (CNRS), UMR7104/Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Anastasiia Shatalova
- Département de Biologie structurale intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de La Santé et de La Recherche Médicale (INSERM), U1258/Centre National de Recherche Scientifique (CNRS), UMR7104/Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Julian Nommé
- Département de Biologie structurale intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de La Santé et de La Recherche Médicale (INSERM), U1258/Centre National de Recherche Scientifique (CNRS), UMR7104/Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Sarah Fritsch
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
- Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
| | - Roland H Stote
- Département de Biologie structurale intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de La Santé et de La Recherche Médicale (INSERM), U1258/Centre National de Recherche Scientifique (CNRS), UMR7104/Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Gaëtan L A Mislin
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
- Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France
| | - Noëlle Potier
- CNRS, UMR7140 Chimie de la Matière Complexe, Laboratoire de Spectrométrie de Masse des Interactions et des Systèmes, Université de Strasbourg, 4 Rue Blaise Pascal, 67082, Strasbourg, France
| | - Annick Dejaegere
- Département de Biologie structurale intégrative, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de La Santé et de La Recherche Médicale (INSERM), U1258/Centre National de Recherche Scientifique (CNRS), UMR7104/Université de Strasbourg, Illkirch-Graffenstaden, France
| | - Coraline Rigouin
- CNRS, UMR7242 Biotechnologie et Signalisation Cellulaire, 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France.
- Université de Strasbourg, Institut de Recherche de l'Ecole de Biotechnologie de Strasbourg (IREBS), 300 Boulevard Sébastien Brant, 67412, Illkirch-Graffenstaden, France.
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3
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Yang L, Yi L, Gong B, Chen L, Li M, Zhu X, Duan Y, Huang Y. Chalkophomycin Biosynthesis Revealing Unique Enzyme Architecture for a Hybrid Nonribosomal Peptide Synthetase and Polyketide Synthase. Molecules 2024; 29:1982. [PMID: 38731473 PMCID: PMC11085572 DOI: 10.3390/molecules29091982] [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: 03/14/2024] [Revised: 04/17/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Chalkophomycin is a novel chalkophore with antibiotic activities isolated from Streptomyces sp. CB00271, while its potential in studying cellular copper homeostasis makes it an important probe and drug lead. The constellation of N-hydroxylpyrrole, 2H-oxazoline, diazeniumdiolate, and methoxypyrrolinone functional groups into one compact molecular architecture capable of coordinating cupric ions draws interest to unprecedented enzymology responsible for chalkophomycin biosynthesis. To elucidate the biosynthetic machinery for chalkophomycin production, the chm biosynthetic gene cluster from S. sp. CB00271 was identified, and its involvement in chalkophomycin biosynthesis was confirmed by gene replacement. The chm cluster was localized to a ~31 kb DNA region, consisting of 19 open reading frames that encode five nonribosomal peptide synthetases (ChmHIJLO), one modular polyketide synthase (ChmP), six tailoring enzymes (ChmFGMNQR), two regulatory proteins (ChmAB), and four resistance proteins (ChmA'CDE). A model for chalkophomycin biosynthesis is proposed based on functional assignments from sequence analysis and structure modelling, and is further supported by analogy to over 100 chm-type gene clusters in public databases. Our studies thus set the stage to fully investigate chalkophomycin biosynthesis and to engineer chalkophomycin analogues through a synthetic biology approach.
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Affiliation(s)
- Long Yang
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China;
- Hefei Comprehensive National Science Center, Institute of Health and Medicine, Hefei 230093, China;
| | - Liwei Yi
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (L.Y.); (B.G.); (M.L.); (X.Z.); (Y.D.)
- Department of Pharmacy, The Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Bang Gong
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (L.Y.); (B.G.); (M.L.); (X.Z.); (Y.D.)
- College of Pharmacy, Hunan Vocational College of Science and Technology, Changsha 410004, China
| | - Lili Chen
- Hefei Comprehensive National Science Center, Institute of Health and Medicine, Hefei 230093, China;
| | - Miao Li
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (L.Y.); (B.G.); (M.L.); (X.Z.); (Y.D.)
| | - Xiangcheng Zhu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (L.Y.); (B.G.); (M.L.); (X.Z.); (Y.D.)
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha 410011, China
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (L.Y.); (B.G.); (M.L.); (X.Z.); (Y.D.)
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha 410011, China
| | - Yong Huang
- Department of Immunology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China;
- Hefei Comprehensive National Science Center, Institute of Health and Medicine, Hefei 230093, China;
- Xiangya International Academy of Translational Medicine, Central South University, Changsha 410013, China; (L.Y.); (B.G.); (M.L.); (X.Z.); (Y.D.)
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4
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Zhang W, Jiang X, Wang M, Zhang Z, Wang N. Origin of the 6/5/6/5 Tetracyclic Cyclopiazonic Acids. Mar Drugs 2024; 22:74. [PMID: 38393045 PMCID: PMC10890092 DOI: 10.3390/md22020074] [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: 01/17/2024] [Revised: 01/29/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
The natural product α-cyclopiazonic acid (α-CPA) is a very potent Ca2+-ATPase inhibitor. The CPA family of compounds comprise over 80 chemical entities with at least five distinct skeletons. While α-CPA features a canonical 6/5/6/5/5 skeleton, the 6/5/6/5 skeleton is the most prevalent among the CPA family. However, the origin of the unique tetracyclic skeleton remains unknown. The 6/5/6/5-type CPAs may derive from a precursor of acetoacetyl-l-tryptophan (AATrp) generated from a hypothetic thioesterase-like pathway. Alternatively, cleavage of the tetramic acid ring would also result in the formation of the 6/5/6/5 scaffold. Aspergillus oryzae HMP-F28 is a marine sponge-associated filamentous fungus known to produce CPAs that act as primary neurotoxins. To elucidate the origin of this subfamily of CPAs, we performed homologous recombination and genetic engineering experiments on strain HMP-F28. Our results are supportive of the ring cleavage pathway through which the tetracyclic 6/5/6/5-type CPAs are generated from 6/5/6/5/5-type pentacyclic CPAs.
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Affiliation(s)
- Wenyuan Zhang
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Xuejian Jiang
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Minjun Wang
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Zhizhen Zhang
- Ocean College, Zhejiang University, Zhoushan 316021, China
| | - Nan Wang
- Ocean College, Zhejiang University, Zhoushan 316021, China
- Hainan Institute of Zhejiang University, Sanya 572025, China
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5
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Li Y, Chen S. Structure modification of an antibiotic: by engineering the fusaricidin bio-synthetase A in Paenibacillus polymyxa. Front Microbiol 2023; 14:1239958. [PMID: 37822742 PMCID: PMC10562733 DOI: 10.3389/fmicb.2023.1239958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/04/2023] [Indexed: 10/13/2023] Open
Abstract
Fusaricidin, a lipopeptide antibiotic, is specifically produced by Paenibacillus polymyxa strains, which could strongly inhibit Fusarium species fungi. Fusaricidin bio-synthetase A (FusA) is composed of six modules and is essential for synthesizing the peptide moiety of fusaricidin. In this study, we confirmed the FusA of Paenibacillus polymyxa strain WLY78 involved in producing Fusaricidin LI-F07a. We constructed six engineered strains by deletion of each module within FusA from the genome of strain WLY78. One of the engineered strains is able to produce a novel compound that exhibits better antifungal activity than that of fusaricidin LI-F07a. This new compound, known as fusaricidin [ΔAla6] LI-F07a, has a molecular weight of 858. Our findings reveal that it exhibits a remarkable 1-fold increase in antifungal activity compared to previous fusaricidin, and the fermentation yield reaches ~55 mg/L. This research holds promising implications for plant protection against infections caused by Fusarium and Botrytis pathogen infection.
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Affiliation(s)
- Yunlong Li
- Chengdu NewSun Crop Science Co. Ltd., Chengdu, China
| | - Sanfeng Chen
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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6
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Han P, Ma A, Ning Y, Chen Z, Liu Y, Liu Z, Li S, Jia Y. Global gene-mining strategy for searching nonribosomal peptides as antimicrobial agents from microbial sources. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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7
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Multifunctional Enzymes in Microbial Secondary Metabolic Processes. Catalysts 2023. [DOI: 10.3390/catal13030581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
Abstract
Microorganisms possess a strong capacity for secondary metabolite synthesis, which is represented by tightly controlled networks. The absence of any enzymes leads to a change in the original metabolic pathway, with a decrease in or even elimination of a synthetic product, which is not permissible under conditions of normal life activities of microorganisms. In order to improve the efficiency of secondary metabolism, organisms have evolved multifunctional enzymes (MFEs) that can catalyze two or more kinds of reactions via multiple active sites. However, instead of interfering, the multifunctional catalytic properties of MFEs facilitate the biosynthetic process. Among the numerous MFEs considered of vital importance in the life activities of living organisms are the synthases involved in assembling the backbone of compounds using different substrates and modifying enzymes that confer the final activity of compounds. In this paper, we review MFEs in terms of both synthetic and post-modifying enzymes involved in secondary metabolic biosynthesis, focusing on polyketides, non-ribosomal peptides, terpenoids, and a wide range of cytochrome P450s(CYP450s), and provide an overview and describe the recent progress in the research on MFEs.
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8
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Sreedharan SM, Rishi N, Singh R. Microbial Lipopeptides: Properties, Mechanics and Engineering for Novel Lipopeptides. Microbiol Res 2023; 271:127363. [PMID: 36989760 DOI: 10.1016/j.micres.2023.127363] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 12/04/2022] [Accepted: 03/11/2023] [Indexed: 03/17/2023]
Abstract
Microorganisms produce active surface agents called lipopeptides (LPs) which are amphiphilic in nature. They are cyclic or linear compounds and are predominantly isolated from Bacillus and Pseudomonas species. LPs show antimicrobial activity towards various plant pathogens and act by inhibiting the growth of these organisms. Several mechanisms are exhibited by LPs, such as cell membrane disruption, biofilm production, induced systematic resistance, improving plant growth, inhibition of spores, etc., making them suitable as biocontrol agents and highly advantageous for industrial utilization. The biosynthesis of lipopeptides involves large multimodular enzymes referred to as non-ribosomal peptide synthases. These enzymes unveil a broad range of engineering approaches through which lipopeptides can be overproduced and new LPs can be generated asserting high efficacy. Such approaches involve several synthetic biology systems and metabolic engineering techniques such as promotor engineering, enhanced precursor availability, condensation domain engineering, and adenylation domain engineering. Finally, this review provides an update of the applications of lipopeptides in various fields.
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9
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Xu Y, Wu JY, Liu QJ, Xue JY. Genome-Wide Identification and Evolutionary Analyses of SrfA Operon Genes in Bacillus. Genes (Basel) 2023; 14:422. [PMID: 36833349 PMCID: PMC9956979 DOI: 10.3390/genes14020422] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/21/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
A variety of secondary metabolites contributing to plant growth are synthesized by bacterial nonribosomal peptide synthases (NRPSs). Among them, the NRPS biosynthesis of surfactin is regulated by the SrfA operon. To explore the molecular mechanism for the diversity of surfactins produced by bacteria within the genus Bacillus, we performed a genome-wide identification study focused on three critical genes of the SrfA operon-SrfAA, SrfAB and SrfAC-from 999 Bacillus genomes (belonging to 47 species). Gene family clustering indicated the three genes can be divided into 66 orthologous groups (gene families), of which a majority comprised members of multiple genes (e.g., OG0000009 had members of all three SrfAA, SrfAB and SrfAC genes), indicating high sequence similarity among the three genes. Phylogenetic analyses also found that none of the three genes formed monophyletic groups, but were usually arranged in a mixed manner, suggesting the close evolutionary relationship among the three genes. Considering the module structure of the three genes, we propose that self-duplication, especially tandem duplications, might have contributed to the initial establishment of the entire SrfA operon, and further gene fusion and recombination as well as accumulated mutations might have continuously shaped the different functional roles of SrfAA, SrfAB and SrfAC. Overall, this study provides novel insight into metabolic gene clusters and operon evolution in bacteria.
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Affiliation(s)
- Ying Xu
- State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
| | - Jia-Yi Wu
- College of Horticulture, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing 210095, China
| | - Qing-Jie Liu
- State Key Laboratory of Enhanced Oil Recovery, PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
| | - Jia-Yu Xue
- College of Horticulture, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing 210095, China
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10
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Sharma S, Hegde P, Panda S, Orimoloye MO, Aldrich CC. Drugging the microbiome: targeting small microbiome molecules. Curr Opin Microbiol 2023; 71:102234. [PMID: 36399893 DOI: 10.1016/j.mib.2022.102234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022]
Abstract
The human microbiome represents a large and diverse collection of microbes that plays an integral role in human physiology and pathophysiology through interactions with the host and within the microbial community. While early work exploring links between microbiome signatures and diseases states has been associative, emerging evidence demonstrates the metabolic products of the human microbiome have more proximal causal effects on disease phenotypes. The therapeutic implications of this shift are profound as manipulation of the microbiome by the administration of live biotherapeutics, ongoing, can now be pursued alongside research efforts toward describing inhibitors of key microbiome enzymes involved in the biosynthesis of metabolites implicated in various disease states and processing of host-derived metabolites. With growing interest in 'drugging the microbiome', we review few notable microbial metabolites for which traditional drug-development campaigns have yielded compounds with therapeutic promise.
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Affiliation(s)
- Sachin Sharma
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Pooja Hegde
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Subhankar Panda
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Moyosore O Orimoloye
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA
| | - Courtney C Aldrich
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, MN, USA.
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11
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Translocation of subunit PPSE in plipastatin synthase and synthesis of novel lipopeptides. Synth Syst Biotechnol 2022; 7:1173-1180. [PMID: 36204332 PMCID: PMC9519435 DOI: 10.1016/j.synbio.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 08/01/2022] [Accepted: 09/07/2022] [Indexed: 11/20/2022] Open
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12
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Romero-Rodríguez A, Martínez de la Peña C, Troncoso-Cotal S, Guzmán C, Sánchez S. Emerging alternatives against Clostridioides difficile infection. Anaerobe 2022; 78:102638. [DOI: 10.1016/j.anaerobe.2022.102638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/02/2022] [Accepted: 09/06/2022] [Indexed: 11/25/2022]
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13
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Clark KA, Bushin LB, Seyedsayamdost MR. RaS-RiPPs in Streptococci and the Human Microbiome. ACS BIO & MED CHEM AU 2022; 2:328-339. [PMID: 35996476 PMCID: PMC9389541 DOI: 10.1021/acsbiomedchemau.2c00004] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
![]()
Radical S-adenosylmethionine (RaS) enzymes have
quickly advanced to one of the most abundant and versatile enzyme
superfamilies known. Their chemistry is predicated upon reductive
homolytic cleavage of a carbon–sulfur bond in cofactor S-adenosylmethionine forming an oxidizing carbon-based radical,
which can initiate myriad radical transformations. An emerging role
for RaS enzymes is their involvement in the biosynthesis of ribosomally
synthesized and post-translationally modified peptides (RiPPs), a
natural product family that has become known as RaS-RiPPs. These metabolites
are especially prevalent in human and mammalian microbiomes because
the complex chemistry of RaS enzymes gives rise to correspondingly
complex natural products with minimal cellular energy and genomic
fingerprint, a feature that is advantageous in microbes with small,
host-adapted genomes in competitive environments. Herein, we review
the discovery and characterization of RaS-RiPPs from the human microbiome
with a focus on streptococcal bacteria. We discuss the varied chemical
modifications that RaS enzymes introduce onto their peptide substrates
and the diverse natural products that they give rise to. The majority
of RaS-RiPPs remain to be discovered, providing an intriguing avenue
for future investigations at the intersection of metalloenzymology,
chemical ecology, and the human microbiome.
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Affiliation(s)
- Kenzie A Clark
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Leah B Bushin
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Mohammad R Seyedsayamdost
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States.,Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, United States
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Deng X, Zhang N, Li Y, Zhu C, Qu B, Liu H, Li R, Bai Y, Shen Q, Falcao Salles J. Bio-organic soil amendment promotes the suppression of Ralstonia solanacearum by inducing changes in the functionality and composition of rhizosphere bacterial communities. THE NEW PHYTOLOGIST 2022; 235:1558-1574. [PMID: 35569105 DOI: 10.1111/nph.18221] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
Stimulating the development of soil suppressiveness against certain pathogens represents a sustainable solution toward reducing pesticide use in agriculture. However, understanding the dynamics of suppressiveness and the mechanisms leading to pathogen control remain largely elusive. Here, we investigated the mechanisms used by the rhizosphere microbiome induces bacterial wilt disease suppression in a long-term field experiment where continuous application of bio-organic fertilizers (BFs) triggered disease suppressiveness when compared to chemical fertilizer application. We further demonstrated in a glasshouse experiment that the suppressiveness of the rhizosphere bacterial communities was triggered mainly by changes in community composition rather than only by the abundance of the introduced biocontrol strain. Metagenomics approaches revealed that members of the families Sphingomonadaceae and Xanthomonadaceae with the ability to produce secondary metabolites were enriched in the BF plant rhizosphere but only upon pathogen invasion. We experimentally validated this observation by inoculating bacterial isolates belonging to the families Sphingomonadaceae and Xanthomonadaceae into conducive soil, which led to a significant reduction in pathogen abundance and increase in nonribosomal peptide synthetase gene abundance. We conclude that priming of the soil microbiome with BF amendment fostered reactive bacterial communities in the rhizosphere of tomato plants in response to biotic disturbance.
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Affiliation(s)
- Xuhui Deng
- Jiangsu Provincial Key Laboratory of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Laboratory of Bio-interactions and Crop Health, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Microbial Ecology Cluster, Genomics Research in Ecology and Evolution in Nature, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9747AG, the Netherlands
| | - Na Zhang
- Jiangsu Provincial Key Laboratory of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Laboratory of Bio-interactions and Crop Health, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yuchan Li
- Jiangsu Provincial Key Laboratory of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Laboratory of Bio-interactions and Crop Health, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Chengzhi Zhu
- Jiangsu Provincial Key Laboratory of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Laboratory of Bio-interactions and Crop Health, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Baoyuan Qu
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences (CAS), Beijing, 100101, China
| | - Hongjun Liu
- Jiangsu Provincial Key Laboratory of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Laboratory of Bio-interactions and Crop Health, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Rong Li
- Jiangsu Provincial Key Laboratory of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Laboratory of Bio-interactions and Crop Health, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yang Bai
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- CAS-JIC Centre of Excellence for Plant and Microbial Science (CEPAMS), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences (CAS), Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Qirong Shen
- Jiangsu Provincial Key Laboratory of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
- Laboratory of Bio-interactions and Crop Health, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Joana Falcao Salles
- Microbial Ecology Cluster, Genomics Research in Ecology and Evolution in Nature, Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, 9747AG, the Netherlands
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15
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Kinner A, Nerke P, Siedentop R, Steinmetz T, Classen T, Rosenthal K, Nett M, Pietruszka J, Lütz S. Recent Advances in Biocatalysis for Drug Synthesis. Biomedicines 2022; 10:964. [PMID: 35625702 PMCID: PMC9138302 DOI: 10.3390/biomedicines10050964] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/16/2022] [Accepted: 04/17/2022] [Indexed: 02/01/2023] Open
Abstract
Biocatalysis is constantly providing novel options for the synthesis of active pharmaceutical ingredients (APIs). In addition to drug development and manufacturing, biocatalysis also plays a role in drug discovery and can support many active ingredient syntheses at an early stage to build up entire scaffolds in a targeted and preparative manner. Recent progress in recruiting new enzymes by genome mining and screening or adapting their substrate, as well as product scope, by protein engineering has made biocatalysts a competitive tool applied in academic and industrial spheres. This is especially true for the advances in the field of nonribosomal peptide synthesis and enzyme cascades that are expanding the capabilities for the discovery and synthesis of new bioactive compounds via biotransformation. Here we highlight some of the most recent developments to add to the portfolio of biocatalysis with special relevance for the synthesis and late-stage functionalization of APIs, in order to bypass pure chemical processes.
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Affiliation(s)
- Alina Kinner
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Philipp Nerke
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Regine Siedentop
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Till Steinmetz
- Laboratory for Technical Biology, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (M.N.)
| | - Thomas Classen
- Institute of Bio- and Geosciences: Biotechnology (IBG-1), Forschungszentrum Jülich, 52428 Jülich, Germany; (T.C.); (J.P.)
| | - Katrin Rosenthal
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
| | - Markus Nett
- Laboratory for Technical Biology, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (T.S.); (M.N.)
| | - Jörg Pietruszka
- Institute of Bio- and Geosciences: Biotechnology (IBG-1), Forschungszentrum Jülich, 52428 Jülich, Germany; (T.C.); (J.P.)
- Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf Located at Forschungszentrum Jülich, 52426 Jülich, Germany
| | - Stephan Lütz
- Chair for Bioprocess Engineering, Department of Biochemical and Chemical Engineering, TU Dortmund University, 44227 Dortmund, Germany; (A.K.); (P.N.); (R.S.); (K.R.)
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16
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Duban M, Cociancich S, Leclère V. Nonribosomal Peptide Synthesis Definitely Working Out of the Rules. Microorganisms 2022; 10:577. [PMID: 35336152 PMCID: PMC8949500 DOI: 10.3390/microorganisms10030577] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/02/2022] [Accepted: 03/03/2022] [Indexed: 12/04/2022] Open
Abstract
Nonribosomal peptides are microbial secondary metabolites exhibiting a tremendous structural diversity and a broad range of biological activities useful in the medical and agro-ecological fields. They are built up by huge multimodular enzymes called nonribosomal peptide synthetases. These synthetases are organized in modules constituted of adenylation, thiolation, and condensation core domains. As such, each module governs, according to the collinearity rule, the incorporation of a monomer within the growing peptide. The release of the peptide from the assembly chain is finally performed by a terminal core thioesterase domain. Secondary domains with modifying catalytic activities such as epimerization or methylation are sometimes included in the assembly lines as supplementary domains. This assembly line structure is analyzed by bioinformatics tools to predict the sequence and structure of the final peptides according to the sequence of the corresponding synthetases. However, a constantly expanding literature unravels new examples of nonribosomal synthetases exhibiting very rare domains and noncanonical organizations of domains and modules, leading to several amazing strategies developed by microorganisms to synthesize nonribosomal peptides. In this review, through several examples, we aim at highlighting these noncanonical pathways in order for the readers to perceive their complexity.
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Affiliation(s)
- Matthieu Duban
- Université de Lille, Université de Liège, UMRT 1158 BioEcoAgro, Métabolites Secondaires d’origine Microbienne, Institut Charles Viollette, F-59000 Lille, France;
| | - Stéphane Cociancich
- CIRAD, UMR PHIM, F-34398 Montpellier, France;
- PHIM, Université Montpellier, CIRAD, INRAE, Institut Agro, IRD, F-34398 Montpellier, France
| | - Valérie Leclère
- Université de Lille, Université de Liège, UMRT 1158 BioEcoAgro, Métabolites Secondaires d’origine Microbienne, Institut Charles Viollette, F-59000 Lille, France;
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17
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Saati-Santamaría Z, Selem-Mojica N, Peral-Aranega E, Rivas R, García-Fraile P. Unveiling the genomic potential of Pseudomonas type strains for discovering new natural products. Microb Genom 2022; 8:000758. [PMID: 35195510 PMCID: PMC8942027 DOI: 10.1099/mgen.0.000758] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 12/07/2021] [Indexed: 12/20/2022] Open
Abstract
Microbes host a huge variety of biosynthetic gene clusters that produce an immeasurable array of secondary metabolites with many different biological activities such as antimicrobial, anticarcinogenic and antiviral. Despite the complex task of isolating and characterizing novel natural products, microbial genomic strategies can be useful for carrying out these types of studies. However, although genomic-based research on secondary metabolism is on the increase, there is still a lack of reports focusing specifically on the genus Pseudomonas. In this work, we aimed (i) to unveil the main biosynthetic systems related to secondary metabolism in Pseudomonas type strains, (ii) to study the evolutionary processes that drive the diversification of their coding regions and (iii) to select Pseudomonas strains showing promising results in the search for useful natural products. We performed a comparative genomic study on 194 Pseudomonas species, paying special attention to the evolution and distribution of different classes of biosynthetic gene clusters and the coding features of antimicrobial peptides. Using EvoMining, a bioinformatic approach for studying evolutionary processes related to secondary metabolism, we sought to decipher the protein expansion of enzymes related to the lipid metabolism, which may have evolved toward the biosynthesis of novel secondary metabolites in Pseudomonas. The types of metabolites encoded in Pseudomonas type strains were predominantly non-ribosomal peptide synthetases, bacteriocins, N-acetylglutaminylglutamine amides and ß-lactones. Also, the evolution of genes related to secondary metabolites was found to coincide with Pseudomonas species diversification. Interestingly, only a few Pseudomonas species encode polyketide synthases, which are related to the lipid metabolism broadly distributed among bacteria. Thus, our EvoMining-based search may help to discover new types of secondary metabolite gene clusters in which lipid-related enzymes are involved. This work provides information about uncharacterized metabolites produced by Pseudomonas type strains, whose gene clusters have evolved in a species-specific way. Our results provide novel insight into the secondary metabolism of Pseudomonas and will serve as a basis for the prioritization of the isolated strains. This article contains data hosted by Microreact.
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Affiliation(s)
- Zaki Saati-Santamaría
- Microbiology and Genetics Department, University of Salamanca, 37007 Salamanca, Spain
- Institute for Agribiotechnology Research (CIALE), 37185 Salamanca, Spain
| | | | - Ezequiel Peral-Aranega
- Microbiology and Genetics Department, University of Salamanca, 37007 Salamanca, Spain
- Institute for Agribiotechnology Research (CIALE), 37185 Salamanca, Spain
| | - Raúl Rivas
- Microbiology and Genetics Department, University of Salamanca, 37007 Salamanca, Spain
- Institute for Agribiotechnology Research (CIALE), 37185 Salamanca, Spain
- Associated Research Unit of Plant-Microorganism Interaction, University of Salamanca-IRNASA-CSIC, 37008 Salamanca, Spain
| | - Paula García-Fraile
- Microbiology and Genetics Department, University of Salamanca, 37007 Salamanca, Spain
- Institute for Agribiotechnology Research (CIALE), 37185 Salamanca, Spain
- Associated Research Unit of Plant-Microorganism Interaction, University of Salamanca-IRNASA-CSIC, 37008 Salamanca, Spain
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18
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Rebuffat S. Ribosomally synthesized peptides, foreground players in microbial interactions: recent developments and unanswered questions. Nat Prod Rep 2021; 39:273-310. [PMID: 34755755 DOI: 10.1039/d1np00052g] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
It is currently well established that multicellular organisms live in tight association with complex communities of microorganisms including a large number of bacteria. These are immersed in complex interaction networks reflecting the relationships established between them and with host organisms; yet, little is known about the molecules and mechanisms involved in these mutual interactions. Ribosomally synthesized peptides, among which bacterial antimicrobial peptides called bacteriocins and microcins have been identified as contributing to host-microbe interplays, are either unmodified or post-translationally modified peptides. This review will unveil current knowledge on these ribosomal peptide-based natural products, their interplay with the host immune system, and their roles in microbial interactions and symbioses. It will include their major structural characteristics and post-translational modifications, the main rules of their maturation pathways, and the principal ecological functions they ensure (communication, signalization, competition), especially in symbiosis, taking select examples in various organisms. Finally, we address unanswered questions and provide a framework for deciphering big issues inspiring future directions in the field.
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Affiliation(s)
- Sylvie Rebuffat
- Laboratory Molecules of Communication and Adaptation of Microorganisms (MCAM, UMR 7245 CNRS-MNHN), National Museum of Natural History (MNHN), National Centre of Scientific Research (CNRS), CP 54, 57 rue Cuvier 75005, Paris, France.
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19
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Beck C, Gren T, Ortiz-López FJ, Jørgensen TS, Carretero-Molina D, Martín Serrano J, Tormo JR, Oves-Costales D, Kontou EE, Mohite OS, Mingyar E, Stegmann E, Genilloud O, Weber T. Activation and Identification of a Griseusin Cluster in Streptomyces sp. CA-256286 by Employing Transcriptional Regulators and Multi-Omics Methods. Molecules 2021; 26:6580. [PMID: 34770989 PMCID: PMC8588249 DOI: 10.3390/molecules26216580] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/17/2022] Open
Abstract
Streptomyces are well-known producers of a range of different secondary metabolites, including antibiotics and other bioactive compounds. Recently, it has been demonstrated that "silent" biosynthetic gene clusters (BGCs) can be activated by heterologously expressing transcriptional regulators from other BGCs. Here, we have activated a silent BGC in Streptomyces sp. CA-256286 by overexpression of a set of SARP family transcriptional regulators. The structure of the produced compound was elucidated by NMR and found to be an N-acetyl cysteine adduct of the pyranonaphtoquinone polyketide 3'-O-α-d-forosaminyl-(+)-griseusin A. Employing a combination of multi-omics and metabolic engineering techniques, we identified the responsible BGC. These methods include genome mining, proteomics and transcriptomics analyses, in combination with CRISPR induced gene inactivations and expression of the BGC in a heterologous host strain. This work demonstrates an easy-to-implement workflow of how silent BGCs can be activated, followed by the identification and characterization of the produced compound, the responsible BGC, and hints of its biosynthetic pathway.
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Affiliation(s)
- Charlotte Beck
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800 Kongens Lyngby, Denmark; (C.B.); (T.G.); (T.S.J.); (E.E.K.); (O.S.M.)
| | - Tetiana Gren
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800 Kongens Lyngby, Denmark; (C.B.); (T.G.); (T.S.J.); (E.E.K.); (O.S.M.)
| | - Francisco Javier Ortiz-López
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico de Ciencias de la Salud, Av. Conocimiento, 34, 18016 Granada, Spain; (F.J.O.-L.); (D.C.-M.); (J.M.S.); (J.R.T.); (D.O.-C.)
| | - Tue Sparholt Jørgensen
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800 Kongens Lyngby, Denmark; (C.B.); (T.G.); (T.S.J.); (E.E.K.); (O.S.M.)
| | - Daniel Carretero-Molina
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico de Ciencias de la Salud, Av. Conocimiento, 34, 18016 Granada, Spain; (F.J.O.-L.); (D.C.-M.); (J.M.S.); (J.R.T.); (D.O.-C.)
| | - Jesús Martín Serrano
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico de Ciencias de la Salud, Av. Conocimiento, 34, 18016 Granada, Spain; (F.J.O.-L.); (D.C.-M.); (J.M.S.); (J.R.T.); (D.O.-C.)
| | - José R. Tormo
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico de Ciencias de la Salud, Av. Conocimiento, 34, 18016 Granada, Spain; (F.J.O.-L.); (D.C.-M.); (J.M.S.); (J.R.T.); (D.O.-C.)
| | - Daniel Oves-Costales
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico de Ciencias de la Salud, Av. Conocimiento, 34, 18016 Granada, Spain; (F.J.O.-L.); (D.C.-M.); (J.M.S.); (J.R.T.); (D.O.-C.)
| | - Eftychia E. Kontou
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800 Kongens Lyngby, Denmark; (C.B.); (T.G.); (T.S.J.); (E.E.K.); (O.S.M.)
| | - Omkar S. Mohite
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800 Kongens Lyngby, Denmark; (C.B.); (T.G.); (T.S.J.); (E.E.K.); (O.S.M.)
| | - Erik Mingyar
- Department of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology and Infection Medicine, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (E.M.); (E.S.)
- German Center for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
| | - Evi Stegmann
- Department of Microbial Bioactive Compounds, Interfaculty Institute of Microbiology and Infection Medicine, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany; (E.M.); (E.S.)
- German Center for Infection Research (DZIF), Partner Site Tübingen, 72076 Tübingen, Germany
| | - Olga Genilloud
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Parque Tecnológico de Ciencias de la Salud, Av. Conocimiento, 34, 18016 Granada, Spain; (F.J.O.-L.); (D.C.-M.); (J.M.S.); (J.R.T.); (D.O.-C.)
| | - Tilmann Weber
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kemitorvet, Building 220, 2800 Kongens Lyngby, Denmark; (C.B.); (T.G.); (T.S.J.); (E.E.K.); (O.S.M.)
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20
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Microbial Lipopeptide-Producing Strains and Their Metabolic Roles under Anaerobic Conditions. Microorganisms 2021; 9:microorganisms9102030. [PMID: 34683351 PMCID: PMC8540375 DOI: 10.3390/microorganisms9102030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 01/17/2023] Open
Abstract
The lipopeptide produced by microorganisms is one of the representative biosurfactants and is characterized as a series of structural analogues of different families. Thirty-four families covering about 300 lipopeptide compounds have been reported in the last decades, and most of the reported lipopeptides produced by microorganisms were under aerobic conditions. The lipopeptide-producing strains under anaerobic conditions have attracted much attention from both the academic and industrial communities, due to the needs and the challenge of their applications in anaerobic environments, such as in oil reservoirs and in microbial enhanced oil recovery (MEOR). In this review, the fifty-eight reported bacterial strains, mostly isolated from oil reservoirs and dominated by the species Bacillus subtilis, producing lipopeptide biosurfactants, and the species Pseudomonas aeruginosa, producing glycolipid biosurfactants under anaerobic conditions were summarized. The metabolic pathway and the non-ribosomal peptide synthetases (NRPSs) of the strain Bacillus subtilis under anaerobic conditions were analyzed, which is expected to better understand the key mechanisms of the growth and production of lipopeptide biosurfactants of such kind of bacteria under anaerobic conditions, and to expand the industrial application of anaerobic biosurfactant-producing bacteria.
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21
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Fage CD, Kosol S, Jenner M, Öster C, Gallo A, Kaniusaite M, Steinbach R, Staniforth M, Stavros VG, Marahiel MA, Cryle MJ, Lewandowski JR. Communication Breakdown: Dissecting the COM Interfaces between the Subunits of Nonribosomal Peptide Synthetases. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02113] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Christopher D. Fage
- Department of Chemistry/Biochemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
| | - Simone Kosol
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
| | - Matthew Jenner
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
- Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry CV4 7AL, U.K
| | - Carl Öster
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
| | - Angelo Gallo
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
| | - Milda Kaniusaite
- The Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia
- EMBL Australia, Monash University, Clayton, Victoria 3800, Australia
| | - Roman Steinbach
- Department of Chemistry/Biochemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Michael Staniforth
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
| | - Vasilios G. Stavros
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
| | - Mohamed A. Marahiel
- Department of Chemistry/Biochemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Max J. Cryle
- The Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia
- EMBL Australia, Monash University, Clayton, Victoria 3800, Australia
| | - Józef R. Lewandowski
- Department of Chemistry, University of Warwick, Gibbet Hill, Coventry CV4 7AL, U.K
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22
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Bach E, Passaglia LMP, Jiao J, Gross H. Burkholderia in the genomic era: from taxonomy to the discovery of new antimicrobial secondary metabolites. Crit Rev Microbiol 2021; 48:121-160. [PMID: 34346791 DOI: 10.1080/1040841x.2021.1946009] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Species of Burkholderia are highly versatile being found not only abundantly in soil, but also as plants and animals' commensals or pathogens. Their complex multireplicon genomes harbour an impressive number of polyketide synthase (PKS) and nonribosomal peptide-synthetase (NRPS) genes coding for the production of antimicrobial secondary metabolites (SMs), which have been successfully deciphered by genome-guided tools. Moreover, genome metrics supported the split of this genus into Burkholderia sensu stricto (s.s.) and five new other genera. Here, we show that the successful antimicrobial SMs producers belong to Burkholderia s.s. Additionally, we reviewed the occurrence, bioactivities, modes of action, structural, and biosynthetic information of thirty-eight Burkholderia antimicrobial SMs shedding light on their diversity, complexity, and uniqueness as well as the importance of genome-guided strategies to facilitate their discovery. Several Burkholderia NRPS and PKS display unusual features, which are reflected in their structural diversity, important bioactivities, and varied modes of action. Up to now, it is possible to observe a general tendency of Burkholderia SMs being more active against fungi. Although the modes of action and biosynthetic gene clusters of many SMs remain unknown, we highlight the potential of Burkholderia SMs as alternatives to fight against new diseases and antibiotic resistance.
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Affiliation(s)
- Evelise Bach
- Departamento de Genética and Programa de Pós-graduação em Genética e Biologia Molecular, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Luciane Maria Pereira Passaglia
- Departamento de Genética and Programa de Pós-graduação em Genética e Biologia Molecular, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Junjing Jiao
- Department for Pharmaceutical Biology, Pharmaceutical Institute, University of Tübingen, Tübingen, Germany
| | - Harald Gross
- Department for Pharmaceutical Biology, Pharmaceutical Institute, University of Tübingen, Tübingen, Germany
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23
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Iacovelli R, Bovenberg RAL, Driessen AJM. Nonribosomal peptide synthetases and their biotechnological potential in Penicillium rubens. J Ind Microbiol Biotechnol 2021; 48:6324005. [PMID: 34279620 PMCID: PMC8788816 DOI: 10.1093/jimb/kuab045] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 07/12/2021] [Indexed: 01/23/2023]
Abstract
Nonribosomal peptide synthetases (NRPS) are large multimodular enzymes that synthesize a diverse variety of peptides. Many of these are currently used as pharmaceuticals, thanks to their activity as antimicrobials (penicillin, vancomycin, daptomycin, echinocandin), immunosuppressant (cyclosporin) and anticancer compounds (bleomycin). Because of their biotechnological potential, NRPSs have been extensively studied in the past decades. In this review, we provide an overview of the main structural and functional features of these enzymes, and we consider the challenges and prospects of engineering NRPSs for the synthesis of novel compounds. Furthermore, we discuss secondary metabolism and NRP synthesis in the filamentous fungus Penicillium rubens and examine its potential for the production of novel and modified β-lactam antibiotics.
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Affiliation(s)
- Riccardo Iacovelli
- Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Roel A L Bovenberg
- Synthetic Biology and Cell Engineering, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands.,DSM Biotechnology Centre, 2613 AX Delft, The Netherlands
| | - Arnold J M Driessen
- Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands
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24
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Mayerthaler F, Feldberg AL, Alfermann J, Sun X, Steinchen W, Yang H, Mootz HD. Intermediary conformations linked to the directionality of the aminoacylation pathway of nonribosomal peptide synthetases. RSC Chem Biol 2021; 2:843-854. [PMID: 34458813 PMCID: PMC8341999 DOI: 10.1039/d0cb00220h] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/18/2021] [Indexed: 01/16/2023] Open
Abstract
Nonribosomal peptide synthetases (NRPSs) are multifunctional megaenzymes that govern the stepwise biosynthesis of pharmaceutically important peptides. In an ATP-dependent assembly-line mechanism dedicated domains are responsible for each catalytic step. Crystal structures have provided insight into several conformations of interacting domains. However, the complete picture in solution of how domain dynamics and the timing of conformational changes effect a directional biosynthesis remains only poorly understood and will be important for the efficient reprogramming of NRPSs. Here we dissect the multiple conformational changes associated with the adenylation and thiolation reactions of the aminoacylation pathway under catalytic conditions. We used pyrophosphate (PP i ) to biochemically drive the conformational changes backward and forward while performing an online monitoring with a Förster resonance energy transfer (FRET) didomain sensor, consisting of adenylation (A) and peptidyl-carrier protein (PCP) domains. Notably, we found aminoacyl thioester formation to efficiently occur in the presence of PP i even at millimolar concentrations, despite the chemically and conformationally reversing effect of this metabolite and by-product. This finding settles conflicting reports and explains why intracellular PP i concentrations do not impair NRP biosynthesis. A conserved amino acid was identified to be important for the mechanism under these conditions. FRET time-course analyses revealed that the directionality of the aminoacylation catalysis is correlated with conformational kinetics. Complemented by equilibrium hydrogen-deuterium exchange (HDX) analyses, our data uncovered the existence of at least one new intermediary conformation that is associated with the rate-determining step. We propose an expanded model of conformational changes in the NRPS aminoacylation pathway.
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Affiliation(s)
- Florian Mayerthaler
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster Münster Germany
| | - Anna-Lena Feldberg
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster Münster Germany
| | - Jonas Alfermann
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster Münster Germany
| | - Xun Sun
- Department of Chemistry, Princeton University Princeton New Jersey USA
| | - Wieland Steinchen
- SYNMIKRO Research Center & Faculty of Chemistry, Philipps-University Marburg Germany
| | - Haw Yang
- Department of Chemistry, Princeton University Princeton New Jersey USA
| | - Henning D Mootz
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster Münster Germany
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25
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Bonhomme S, Dessen A, Macheboeuf P. The inherent flexibility of type I non-ribosomal peptide synthetase multienzymes drives their catalytic activities. Open Biol 2021; 11:200386. [PMID: 34034506 PMCID: PMC8150014 DOI: 10.1098/rsob.200386] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Non-ribosomal peptide synthetases (NRPSs) are multienzymes that produce complex natural metabolites with many applications in medicine and agriculture. They are composed of numerous catalytic domains that elongate and chemically modify amino acid substrates or derivatives and of non-catalytic carrier protein domains that can tether and shuttle the growing products to the different catalytic domains. The intrinsic flexibility of NRPSs permits conformational rearrangements that are required to allow interactions between catalytic and carrier protein domains. Their large size coupled to this flexibility renders these multi-domain proteins very challenging for structural characterization. Here, we summarize recent studies that offer structural views of multi-domain NRPSs in various catalytically relevant conformations, thus providing an increased comprehension of their catalytic cycle. A better structural understanding of these multienzymes provides novel perspectives for their re-engineering to synthesize new bioactive metabolites.
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Affiliation(s)
- Sarah Bonhomme
- Univ. Grenoble Alpes, CNRS, CEA, IBS, F-38000 Grenoble, France
| | - Andréa Dessen
- Univ. Grenoble Alpes, CNRS, CEA, IBS, F-38000 Grenoble, France.,Brazilian Biosciences National Laboratory (LNBio), CNPEM, Campinas 13084-971, São Paulo, Brazil
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26
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Evolutionary and functional analysis of an NRPS condensation domain integrates β-lactam, ᴅ-amino acid, and dehydroamino acid synthesis. Proc Natl Acad Sci U S A 2021; 118:2026017118. [PMID: 33893237 DOI: 10.1073/pnas.2026017118] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Nonribosomal peptide synthetases (NRPSs) are large, multidomain biosynthetic enzymes involved in the assembly-line-like synthesis of numerous peptide natural products. Among these are clinically useful antibiotics including three classes of β-lactams: the penicillins/cephalosporins, the monobactams, and the monocyclic nocardicins, as well as the vancomycin family of glycopeptides and the depsipeptide daptomycin. During NRPS synthesis, peptide bond formation is catalyzed by condensation (C) domains, which couple the nascent peptide with the next programmed amino acid of the sequence. A growing number of additional functions are linked to the activity of C domains. In the biosynthesis of the nocardicins, a specialized C domain prepares the embedded β-lactam ring from a serine residue. Here, we examine the evolutionary descent of this unique β-lactam-synthesizing C domain. Guided by its ancestry, we predict and demonstrate in vitro that this C domain alternatively performs peptide bond formation when a single stereochemical change is introduced into its peptide starting material. Remarkably, the function of the downstream thioesterase (TE) domain also changes. Natively, the TE directs C terminus epimerization prior to hydrolysis when the β-lactam is made but catalyzes immediate release of the alternative peptide. In addition, we investigate the roles of C-domain histidine residues in light of clade-specific sequence motifs, refining earlier mechanistic proposals of both β-lactam formation and canonical peptide synthesis. Finally, expanded phylogenetic analysis reveals unifying connections between β-lactam synthesis and allied C domains associated with the appearance of ᴅ-amino acid and dehydroamino acid residues in other NRPS-derived natural products.
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27
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Baltz RH. Genome mining for drug discovery: cyclic lipopeptides related to daptomycin. J Ind Microbiol Biotechnol 2021; 48:6178872. [PMID: 33739403 PMCID: PMC9113097 DOI: 10.1093/jimb/kuab020] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 11/17/2020] [Indexed: 11/25/2022]
Abstract
The cyclic lipopeptide antibiotics structurally related to daptomycin were first reported in the 1950s. Several have common lipopeptide initiation, elongation, and termination mechanisms. Initiation requires the use of a fatty acyl-AMP ligase (FAAL), a free-standing acyl carrier protein (ACP), and a specialized condensation (CIII) domain on the first NRPS elongation module to couple the long chain fatty acid to the first amino acid. Termination is carried out by a dimodular NRPS that contains a terminal thioesterase (Te) domain (CAT-CATTe). Lipopeptide BGCs also encode ABC transporters, apparently for export and resistance. The use of this mechanism of initiation, elongation, and termination, coupled with molecular target-agnostic resistance, has provided a unique basis for robust natural and experimental combinatorial biosynthesis to generate a large variety of structurally related compounds, some with altered or different antibacterial mechanisms of action. The FAAL, ACP, and dimodular NRPS genes were used as molecular beacons to identify phylogenetically related BGCs by BLASTp analysis of finished and draft genome sequences. These and other molecular beacons have identified: (i) known, but previously unsequenced lipopeptide BGCs in draft genomes; (ii) a new daptomycin family BGC in a draft genome of Streptomyces sedi; and (iii) novel lipopeptide BGCs in the finished genome of Streptomyces ambofaciens and the draft genome of Streptomyces zhaozhouensis.
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Affiliation(s)
- Richard H Baltz
- CognoGen Biotechnology Consulting, 7757 Uliva Way, Sarasota, FL 34238, USA
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28
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Groß S, Schnell B, Haack PA, Auerbach D, Müller R. In vivo and in vitro reconstitution of unique key steps in cystobactamid antibiotic biosynthesis. Nat Commun 2021; 12:1696. [PMID: 33727542 PMCID: PMC7966384 DOI: 10.1038/s41467-021-21848-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 02/13/2021] [Indexed: 01/31/2023] Open
Abstract
Cystobactamids are myxobacteria-derived topoisomerase inhibitors with potent anti-Gram-negative activity. They are formed by a non-ribosomal peptide synthetase (NRPS) and consist of tailored para-aminobenzoic acids, connected by a unique α-methoxy-L-isoasparagine or a β-methoxy-L-asparagine linker moiety. We describe the heterologous expression of the cystobactamid biosynthetic gene cluster (BGC) in Myxococcus xanthus. Targeted gene deletions produce several unnatural cystobactamids. Using in vitro experiments, we reconstitute the key biosynthetic steps of linker formation and shuttling via CysB to the NRPS. The biosynthetic logic involves a previously uncharacterized bifunctional domain found in the stand-alone NRPS module CysH, albicidin biosynthesis and numerous BGCs of unknown natural products. This domain performs either an aminomutase (AM) or an amide dehydratase (DH) type of reaction, depending on the activity of CysJ which hydroxylates CysH-bound L-asparagine. Furthermore, CysQ O-methylates hydroxyl-L-(iso)asparagine only in the presence of the AMDH domain. Taken together, these findings provide direct evidence for unique steps in cystobactamid biosynthesis.
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Affiliation(s)
- Sebastian Groß
- grid.11749.3a0000 0001 2167 7588Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, Saarland University, Campus E8.1, 66123 Saarbrücken, Germany ,grid.11749.3a0000 0001 2167 7588Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany ,grid.452463.2DZIF - German Centre for Infection Research, Partnersite Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Bastien Schnell
- grid.11749.3a0000 0001 2167 7588Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, Saarland University, Campus E8.1, 66123 Saarbrücken, Germany ,grid.11749.3a0000 0001 2167 7588Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany ,grid.452463.2DZIF - German Centre for Infection Research, Partnersite Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Patrick A. Haack
- grid.11749.3a0000 0001 2167 7588Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, Saarland University, Campus E8.1, 66123 Saarbrücken, Germany ,grid.11749.3a0000 0001 2167 7588Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany ,grid.452463.2DZIF - German Centre for Infection Research, Partnersite Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - David Auerbach
- grid.11749.3a0000 0001 2167 7588Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, Saarland University, Campus E8.1, 66123 Saarbrücken, Germany ,grid.11749.3a0000 0001 2167 7588Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany ,grid.452463.2DZIF - German Centre for Infection Research, Partnersite Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Rolf Müller
- grid.11749.3a0000 0001 2167 7588Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, Saarland University, Campus E8.1, 66123 Saarbrücken, Germany ,grid.11749.3a0000 0001 2167 7588Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany ,grid.452463.2DZIF - German Centre for Infection Research, Partnersite Hannover-Braunschweig, 38124 Braunschweig, Germany
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29
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Martín JF, Liras P, Sánchez S. Modulation of Gene Expression in Actinobacteria by Translational Modification of Transcriptional Factors and Secondary Metabolite Biosynthetic Enzymes. Front Microbiol 2021; 12:630694. [PMID: 33796086 PMCID: PMC8007912 DOI: 10.3389/fmicb.2021.630694] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 01/04/2021] [Indexed: 12/20/2022] Open
Abstract
Different types of post-translational modifications are present in bacteria that play essential roles in bacterial metabolism modulation. Nevertheless, limited information is available on these types of modifications in actinobacteria, particularly on their effects on secondary metabolite biosynthesis. Recently, phosphorylation, acetylation, or phosphopantetheneylation of transcriptional factors and key enzymes involved in secondary metabolite biosynthesis have been reported. There are two types of phosphorylations involved in the control of transcriptional factors: (1) phosphorylation of sensor kinases and transfer of the phosphate group to the receiver domain of response regulators, which alters the expression of regulator target genes. (2) Phosphorylation systems involving promiscuous serine/threonine/tyrosine kinases that modify proteins at several amino acid residues, e.g., the phosphorylation of the global nitrogen regulator GlnR. Another post-translational modification is the acetylation at the epsilon amino group of lysine residues. The protein acetylation/deacetylation controls the activity of many short and long-chain acyl-CoA synthetases, transcriptional factors, key proteins of bacterial metabolism, and enzymes for the biosynthesis of non-ribosomal peptides, desferrioxamine, streptomycin, or phosphinic acid-derived antibiotics. Acetyltransferases catalyze acetylation reactions showing different specificity for the acyl-CoA donor. Although it functions as acetyltransferase, there are examples of malonylation, crotonylation, succinylation, or in a few cases acylation activities using bulky acyl-CoA derivatives. Substrates activation by nucleoside triphosphates is one of the central reactions inhibited by lysine acetyltransferases. Phosphorylation/dephosphorylation or acylation/deacylation reactions on global regulators like PhoP, GlnR, AfsR, and the carbon catabolite regulator glucokinase strongly affects the expression of genes controlled by these regulators. Finally, a different type of post-translational protein modification is the phosphopantetheinylation, catalized by phosphopantetheinyl transferases (PPTases). This reaction is essential to modify those enzymes requiring phosphopantetheine groups like non-ribosomal peptide synthetases, polyketide synthases, and fatty acid synthases. Up to five PPTases are present in S. tsukubaensis and S. avermitilis. Different PPTases modify substrate proteins in the PCP or ACP domains of tacrolimus biosynthetic enzymes. Directed mutations of genes encoding enzymes involved in the post-translational modification is a promising tool to enhance the production of bioactive metabolites.
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Affiliation(s)
- Juan F Martín
- Área de Microbiología, Departamento de Biología Molecular, Universidad de León, León, Spain
| | - Paloma Liras
- Área de Microbiología, Departamento de Biología Molecular, Universidad de León, León, Spain
| | - Sergio Sánchez
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, Mexico
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30
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Shi J, Xu X, Liu PY, Hu YL, Zhang B, Jiao RH, Bashiri G, Tan RX, Ge HM. Discovery and biosynthesis of guanipiperazine from a NRPS-like pathway. Chem Sci 2021; 12:2925-2930. [PMID: 34164059 PMCID: PMC8179380 DOI: 10.1039/d0sc06135b] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nonribosomal peptide synthetases (NRPSs) are modular enzymes that use a thiotemplate mechanism to assemble the peptide backbones of structurally diverse and biologically active natural products in bacteria and fungi. Unlike these canonical multi-modular NRPSs, single-module NRPS-like enzymes, which lack the key condensation (C) domain, are rare in bacteria, and have been largely unexplored to date. Here, we report the discovery of a gene cluster (gup) encoding a NRPS-like megasynthetase through genome mining. Heterologous expression of the gup cluster led to the production of two unprecedented alkaloids, guanipiperazines A and B. The NRPS-like enzyme activates two l-tyrosine molecules, reduces them to the corresponding amino aldehydes, and forms an unstable imine product. The subsequent enzymatic reduction affords piperazine, which can be morphed by a P450 monooxygenase into a highly strained compound through C–O bond formation. Further intermolecular oxidative coupling forming the C–C or C–O bond is catalyzed by another P450 enzyme. This work reveals the huge potential of NRPS-like biosynthetic gene clusters in the discovery of novel natural products. Genome mining of a NRPS-like gene cluster led to the identification of two novel alkaloids with antimicrobial activity. This work reveals the huge potential of NRPS-like biosynthetic gene clusters in the discovery of novel natural products.![]()
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Affiliation(s)
- Jing Shi
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
| | - Xiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
| | - Pei Yi Liu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
| | - Yi Ling Hu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
| | - Bo Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
| | - Rui Hua Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
| | - Ghader Bashiri
- Laboratory of Structural Biology, Maurice Wilkins Centre for Molecular Biodiscovery, School of Biological Sciences, University of Auckland Auckland 1010 New Zealand
| | - Ren Xiang Tan
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
| | - Hui Ming Ge
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Chemistry and Biomedicine Innovation Center (ChemBIC), Institute of Artificial Intelligence Biomedicine, Nanjing University Nanjing 210023 China
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Gressler M, Löhr NA, Schäfer T, Lawrinowitz S, Seibold PS, Hoffmeister D. Mind the mushroom: natural product biosynthetic genes and enzymes of Basidiomycota. Nat Prod Rep 2021; 38:702-722. [PMID: 33404035 DOI: 10.1039/d0np00077a] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Covering: up to September 2020 Mushroom-forming fungi of the division Basidiomycota have traditionally been recognised as prolific producers of structurally diverse and often bioactive secondary metabolites, using the methods of chemistry for research. Over the past decade, -omics technologies were applied on these fungi, and sophisticated heterologous gene expression platforms emerged, which have boosted research into the genetic and biochemical basis of the biosyntheses. This review provides an overview on experimentally confirmed natural product biosyntheses of basidiomycete polyketides, amino acid-derived products, terpenoids, and volatiles. We also present challenges and solutions particular to natural product research with these fungi. 222 references are cited.
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Affiliation(s)
- Markus Gressler
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-University Jena, Winzerlaer Strasse 2, 07745 Jena, Germany.
| | - Nikolai A Löhr
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-University Jena, Winzerlaer Strasse 2, 07745 Jena, Germany.
| | - Tim Schäfer
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-University Jena, Winzerlaer Strasse 2, 07745 Jena, Germany.
| | - Stefanie Lawrinowitz
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-University Jena, Winzerlaer Strasse 2, 07745 Jena, Germany.
| | - Paula Sophie Seibold
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-University Jena, Winzerlaer Strasse 2, 07745 Jena, Germany.
| | - Dirk Hoffmeister
- Department of Pharmaceutical Microbiology at the Hans Knöll Institute, Friedrich-Schiller-University Jena, Winzerlaer Strasse 2, 07745 Jena, Germany.
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Beyond Toxin Transport: Novel Role of ABC Transporter for Enzymatic Machinery of Cereulide NRPS Assembly Line. mBio 2020; 11:mBio.01577-20. [PMID: 32994334 PMCID: PMC7527721 DOI: 10.1128/mbio.01577-20] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
This study revealed a novel, potentially conserved mechanism involved in the biosynthesis of microbial natural products, exemplified by the mitochondrial active depsipeptide cereulide. Similar to other bioactive substances, such as the last-resort antibiotics vancomycin and daptomycin, the antitumor drug cryptophycin or the cholesterol-lowering agent lovastatin, cereulide is synthesized nonribosomally by multienzyme machinery, requiring the concerted actions of multiple proteins to ensure correct product assembly. Given the importance of microbial secondary metabolites in human and veterinary medicine, it is critical to understand how these processes are orchestrated within the host cells. By revealing that tethering of a biosynthetic enzyme to the cell membrane by an ABC transporter is essential for nonribosomal peptide production, our study provides novel insights into synthesis of microbial secondary metabolites, which could contribute to isolation of novel compounds from cryptic secondary metabolite clusters or improve the yield of produced pharmaceuticals. Nonribosomal peptide synthetases (NRPSs) and polyketide synthetases (PKSs) play a pivotal role in the production of bioactive natural products, such as antibiotics and cytotoxins. Despite biomedical and pharmaceutical importance, the molecular mechanisms and architectures of these multimodular enzyme complexes are not fully understood. Here, we report on an ABC transporter that forms a vital part of the nonribosomal peptide biosynthetic machinery. Emetic Bacillus cereus produces the highly potent, mitochondrial active nonribosomal depsipeptide cereulide, synthesized by the NRPS Ces. The ces gene locus includes, next to the structural cesAB genes, a putative ABC transporter, designated cesCD. Our study demonstrates that tethering of CesAB synthetase to the cell membrane by CesCD is critical for peptide assembly. In vivo studies revealed that CesAB colocalizes with CesCD on the cell membrane, suggesting direct involvement of this ABC transporter in the biosynthesis of a nonribosomal peptide. Mutation of cesCD, disrupting the assembly of the CesCD complex, resulted in decreased interaction with CesAB and, as a consequence, negatively affected cereulide biosynthesis. Specific domains within CesAB synthetase interacting with CesC were identified. Furthermore, we demonstrated that the structurally similar BerAB transporter from Bacillus thuringiensis complements CesCD function in cereulide biosynthesis, suggesting that the direct involvement of ABC transporter in secondary metabolite biosynthesis could be a widespread mechanism. In summary, our study revealed a novel, noncanonical function for ABC transporter, which is essential for megaenzyme functionality of NRPS. The new insights into natural product biosynthesis gained may facilitate the discovery of new metabolites with bioactive potential.
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33
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Dehling E, Rüschenbaum J, Diecker J, Dörner W, Mootz HD. Photo-crosslink analysis in nonribosomal peptide synthetases reveals aberrant gel migration of branched crosslink isomers and spatial proximity between non-neighboring domains. Chem Sci 2020; 11:8945-8954. [PMID: 34123148 PMCID: PMC8163358 DOI: 10.1039/d0sc01969k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Nonribosomal peptide synthetases (NRPSs) are large, multi-modular enzyme templates for the biosynthesis of important peptide natural products. Modules are composed of a set of semi-autonomous domains that facilitate the individual reaction steps. Only little is known about the existence and relevance of a higher-order architecture in these mega-enzymes, for which contacts between non-neighboring domains in three-dimensional space would be characteristic. Similarly poorly understood is the structure of communication-mediating (COM) domains that facilitate NRPS subunit docking at the boundaries between epimerization and condensation domains. We investigated a COM domain pair in a minimal two module NRPS using genetically encoded photo-crosslinking moieties in the N-terminal acceptor COM domain. Crosslinks into the C-terminal donor COM domain of the partner module resulted in protein products with the expected migration behavior on SDS-PAGE gels corresponding to the added molecular weight of the proteins. Additionally, an unexpected apparent high-molecular weight crosslink product was revealed by mass spectrometric analysis to represent a T-form isomer with branched connectivity of the two polypeptide chains. Synthesis of the linear L-form and branched T-form isomers by click chemistry confirmed this designation. Our data revealed a surprising spatial proximity between the acceptor COM domain and the functionally unrelated small subdomain of the preceding adenylation domain. These findings provide an insight into three-dimensional domain arrangements in NRPSs in solution and suggest the described photo-crosslinking approach as a promising tool for the systematic investigation of their higher-order architecture. Photo-crosslink analysis reveals unexpected insights into the higher-order architecture of NRPS and the nature of crosslink isomers.![]()
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Affiliation(s)
- Eva Dehling
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster D-48149 Münster Germany
| | - Jennifer Rüschenbaum
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster D-48149 Münster Germany
| | - Julia Diecker
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster D-48149 Münster Germany
| | - Wolfgang Dörner
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster D-48149 Münster Germany
| | - Henning D Mootz
- Institute of Biochemistry, Department of Chemistry and Pharmacy, University of Muenster D-48149 Münster Germany
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34
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Xu ZF, Bo ST, Wang MJ, Shi J, Jiao RH, Sun Y, Xu Q, Tan RX, Ge HM. Discovery and biosynthesis of bosamycins from Streptomyces sp. 120454. Chem Sci 2020; 11:9237-9245. [PMID: 34094195 PMCID: PMC8161544 DOI: 10.1039/d0sc03469j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Nonribosomal peptides (NRPs) that are synthesized by modular megaenzymes known as nonribosomal peptide synthetases (NRPSs) are a rich source for drug discovery. By targeting an unusual NRPS architecture, we discovered an unusual biosynthetic gene cluster (bsm) from Streptomyces sp. 120454 and identified that it was responsible for the biosynthesis of a series of novel linear peptides, bosamycins. The bsm gene cluster contains a unique monomodular NRPS, BsmF, that contains a cytochrome P450 domain at the N-terminal. BsmF (P450 + A + T) can selectively activate tyrosine with its adenylation (A) domain, load it onto the thiolation (T) domain, and then hydroxylate tyrosine to form 5-OH tyrosine with the P450 domain. We demonstrated a NRPS assembly line for the formation of bosamycins by genetic and biochemical analysis and heterologous expression. Our work reveals a genome mining strategy targeting a unique NRPS domain for the discovery of novel NRPs.
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Affiliation(s)
- Zi Fei Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China
| | - Sheng Tao Bo
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China
| | - Mei Jing Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China
| | - Jing Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China
| | - Rui Hua Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China
| | - Yang Sun
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China .,Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University Nanjing 210023 P. R. China
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China
| | - Ren Xiang Tan
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China .,State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine Nanjing 210023 P. R. China
| | - Hui Ming Ge
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University 210023 P. R. China .,Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University Nanjing 210023 P. R. China
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Corretto E, Antonielli L, Sessitsch A, Höfer C, Puschenreiter M, Widhalm S, Swarnalakshmi K, Brader G. Comparative Genomics of Microbacterium Species to Reveal Diversity, Potential for Secondary Metabolites and Heavy Metal Resistance. Front Microbiol 2020; 11:1869. [PMID: 32903828 PMCID: PMC7438953 DOI: 10.3389/fmicb.2020.01869] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 07/16/2020] [Indexed: 12/11/2022] Open
Abstract
Microbacterium species have been isolated from a wide range of hosts and environments, including heavy metal-contaminated sites. Here, we present a comprehensive analysis on the phylogenetic distribution and the genetic potential of 70 Microbacterium belonging to 20 different species isolated from heavy metal-contaminated and non-contaminated sites with particular attention to secondary metabolites gene clusters. The analyzed Microbacterium species are divided in three main functional clades. They share a small core genome (331 gene families covering basic functions) pointing to high genetic diversity. The most common secondary metabolite gene clusters encode pathways for the production of terpenoids, type III polyketide synthases and non-ribosomal peptide synthetases, potentially responsible of the synthesis of siderophore-like compounds. In vitro tests showed that many Microbacterium strains produce siderophores, ACC deaminase, auxins (IAA) and are able to solubilize phosphate. Microbacterium isolates from heavy metal contaminated sites are on average more resistant to heavy metals and harbor more genes related to metal homeostasis (e.g., metalloregulators). On the other hand, the ability to increase the metal mobility in a contaminated soil through the secretion of specific molecules seems to be widespread among all. Despite the widespread capacity of strains to mobilize several metals, plants inoculated with selected Microbacterium isolates showed only slightly increased iron concentrations, whereas concentrations of zinc, cadmium and lead were decreased.
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Affiliation(s)
- Erika Corretto
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Livio Antonielli
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Angela Sessitsch
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Christoph Höfer
- Institute of Soil Research, Department of Forest- and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Markus Puschenreiter
- Institute of Soil Research, Department of Forest- and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Siegrid Widhalm
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | | | - Günter Brader
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
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36
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Luo X, Tian T, Tan X, Zheng Y, Xie C, Xu Y, Yang X. VdNPS, a Nonribosomal Peptide Synthetase, Is Involved in Regulating Virulence in Verticillium dahliae. PHYTOPATHOLOGY 2020; 110:1398-1409. [PMID: 32228378 DOI: 10.1094/phyto-02-20-0031-r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Nonribosomal peptide synthetases (NPS) are known for the biosynthesis of antibiotics, toxins, and siderophore production. They are also a virulence determinant in different phytopathogens. However, until now, the functional characterization of NPS in Verticillium dahliae has not been reported. Deletion of the NPS gene in V. dahliae led to the decrease of conidia, microsclerotia, and pathogenicity. ΔVdNPS strains were tolerant to H2O2, and the genes involved in H2O2 detoxification, iron/copper transport, and cytoskeleton were differentially expressed in ΔVdNPS. Interestingly, ΔVdNPS strains exhibited hypersensitivity to salicylic acid (SA), and the genes involved in SA hydroxylation were up-regulated in ΔVdNPS compared with wild-type V. dahliae under SA stress. Additionally, during infection, ΔVdNPS induced more pathogenesis-related gene expression, higher reactive oxygen species production, and stronger SA-mediated signaling transduction in host to overcome pathogen. Uncovering the function of VdNPS in pathogenicity could provide a reliable theoretical basis for the development of cultivars with durable resistance against V. dahliae-associated diseases.
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Affiliation(s)
- Xiumei Luo
- The School of Life Science, Chongqing University, Chongqing 401331, China
- Chongqing Engineering Research Center of Specialty Crop Resources and The College of Life Science, Chongqing Normal University, Chongqing 401331, China
| | - Tingting Tian
- The School of Life Science, Chongqing University, Chongqing 401331, China
| | - Xue Tan
- The School of Life Science, Chongqing University, Chongqing 401331, China
| | - Yixuan Zheng
- Chongqing Engineering Research Center of Specialty Crop Resources and The College of Life Science, Chongqing Normal University, Chongqing 401331, China
| | - Chengjian Xie
- Chongqing Engineering Research Center of Specialty Crop Resources and The College of Life Science, Chongqing Normal University, Chongqing 401331, China
| | - Ya Xu
- Chongqing Engineering Research Center of Specialty Crop Resources and The College of Life Science, Chongqing Normal University, Chongqing 401331, China
| | - Xingyong Yang
- Chongqing Engineering Research Center of Specialty Crop Resources and The College of Life Science, Chongqing Normal University, Chongqing 401331, China
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Kaniusaite M, Tailhades J, Kittilä T, Fage CD, Goode RJA, Schittenhelm RB, Cryle MJ. Understanding the early stages of peptide formation during the biosynthesis of teicoplanin and related glycopeptide antibiotics. FEBS J 2020; 288:507-529. [PMID: 32359003 DOI: 10.1111/febs.15350] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 04/20/2020] [Accepted: 04/28/2020] [Indexed: 02/02/2023]
Abstract
The biosynthesis of the glycopeptide antibiotics (GPAs) demonstrates the exceptional ability of nonribosomal peptide (NRP) synthesis to generate diverse and complex structures from an expanded array of amino acid precursors. Whilst the heptapeptide cores of GPAs share a conserved C terminus, including the aromatic residues involved cross-linking and that are essential for the antibiotic activity of GPAs, most structural diversity is found within the N terminus of the peptide. Furthermore, the origin of the (D)-stereochemistry of residue 1 of all GPAs is currently unclear, despite its importance for antibiotic activity. Given these important features, we have now reconstituted modules (M) 1-4 of the NRP synthetase (NRPS) assembly lines that synthesise the clinically relevant type IV GPA teicoplanin and the related compound A40926. Our results show that important roles in amino acid modification during the NRPS-mediated biosynthesis of GPAs can be ascribed to the actions of condensation domains present within these modules, including the incorporation of (D)-amino acids at position 1 of the peptide. Our results also indicate that hybrid NRPS assembly lines can be generated in a facile manner by mixing NRPS proteins from different systems and that uncoupling of peptide formation due to different rates of activity seen for NRPS modules can be controlled by varying the ratio of NRPS modules. Taken together, this indicates that NRPS assembly lines function as dynamic peptide assembly lines and not static megaenzyme complexes, which has significant implications for biosynthetic redesign of these important biosynthetic systems.
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Affiliation(s)
- Milda Kaniusaite
- Department of Biochemistry and Molecular Biology, The Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia.,EMBL Australia, Monash University, Clayton, Australia.,ARC Centre of Excellence for Innovations in Peptide and Protein Science, Monash University, Clayton, Australia
| | - Julien Tailhades
- Department of Biochemistry and Molecular Biology, The Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia.,EMBL Australia, Monash University, Clayton, Australia.,ARC Centre of Excellence for Innovations in Peptide and Protein Science, Monash University, Clayton, Australia
| | - Tiia Kittilä
- Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Heidelberg, Germany
| | | | - Robert J A Goode
- Department of Biochemistry and Molecular Biology, The Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia.,Monash Proteomics and Metabolomics Facility, Monash University, Clayton, Australia
| | - Ralf B Schittenhelm
- Department of Biochemistry and Molecular Biology, The Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia.,Monash Proteomics and Metabolomics Facility, Monash University, Clayton, Australia
| | - Max J Cryle
- Department of Biochemistry and Molecular Biology, The Monash Biomedicine Discovery Institute, Monash University, Clayton, Australia.,EMBL Australia, Monash University, Clayton, Australia.,ARC Centre of Excellence for Innovations in Peptide and Protein Science, Monash University, Clayton, Australia
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38
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Mejía-Argueta EL, Santillán Benítez JG, Ortiz-Reynoso M. Antimicrobial peptides, an alternative to combat bacterial resistance. ACTA BIOLÓGICA COLOMBIANA 2020. [DOI: 10.15446/abc.v25n2.77407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Antimicrobial peptides of higher organisms have been studied for the past 25 years, and their importance as components of innate immunity is now well established. The essential simplicity of their chemical structure, along with the lower likelihood of developed resistance compared to conventional antibiotics, has made them attractive candidates for development as therapeutics. The objective of this review article is to describe the current relevance, main mechanisms presented, and the uses of antimicrobial peptides as new therapies in the clinical area. The information used was mainly compiled from scientific articles based on a systematic review of scientific papers with data on human antimicrobial peptides (AMPs) and their different applications, searching without date limits and only documents in English and Spanish. Gray literature was accessed through manual search, and no restrictions were made involving study design for a retrospective study. Although these products have not yet been commercialized, they have advantages over the currently available treatments since they are not expected to cause bacterial resistance due to their three-dimensional structure, amphipathic tendency, and cationic character; however, the technique of peptide production is still new and is in the early stages of innovation of new molecules.
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39
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Reimer JM, Eivaskhani M, Harb I, Guarné A, Weigt M, Schmeing TM. Structures of a dimodular nonribosomal peptide synthetase reveal conformational flexibility. Science 2020; 366:366/6466/eaaw4388. [PMID: 31699907 DOI: 10.1126/science.aaw4388] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 06/04/2019] [Accepted: 10/10/2019] [Indexed: 01/01/2023]
Abstract
Nonribosomal peptide synthetases (NRPSs) are biosynthetic enzymes that synthesize natural product therapeutics using a modular synthetic logic, whereby each module adds one aminoacyl substrate to the nascent peptide. We have determined five x-ray crystal structures of large constructs of the NRPS linear gramicidin synthetase, including a structure of a full core dimodule in conformations organized for the condensation reaction and intermodular peptidyl substrate delivery. The structures reveal differences in the relative positions of adjacent modules, which are not strictly coupled to the catalytic cycle and are consistent with small-angle x-ray scattering data. The structures and covariation analysis of homologs allowed us to create mutants that improve the yield of a peptide from a module-swapped dimodular NRPS.
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Affiliation(s)
- Janice M Reimer
- Department of Biochemistry and Center de Recherche en Biologie Structurale, McGill University, Montréal, QC H3G 0B1, Canada
| | - Maximilian Eivaskhani
- Department of Biochemistry and Center de Recherche en Biologie Structurale, McGill University, Montréal, QC H3G 0B1, Canada
| | - Ingrid Harb
- Department of Biochemistry and Center de Recherche en Biologie Structurale, McGill University, Montréal, QC H3G 0B1, Canada
| | - Alba Guarné
- Department of Biochemistry and Center de Recherche en Biologie Structurale, McGill University, Montréal, QC H3G 0B1, Canada
| | - Martin Weigt
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine, Laboratory of Computational and Quantitative Biology, F-75005 Paris, France
| | - T Martin Schmeing
- Department of Biochemistry and Center de Recherche en Biologie Structurale, McGill University, Montréal, QC H3G 0B1, Canada.
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40
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Jaremko MJ, Davis TD, Corpuz JC, Burkart MD. Type II non-ribosomal peptide synthetase proteins: structure, mechanism, and protein-protein interactions. Nat Prod Rep 2020; 37:355-379. [PMID: 31593192 PMCID: PMC7101270 DOI: 10.1039/c9np00047j] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covering: 1990 to 2019 Many medicinally-relevant compounds are derived from non-ribosomal peptide synthetase (NRPS) products. Type I NRPSs are organized into large modular complexes, while type II NRPS systems contain standalone or minimal domains that often encompass specialized tailoring enzymes that produce bioactive metabolites. Protein-protein interactions and communication between the type II biosynthetic machinery and various downstream pathways are critical for efficient metabolite production. Importantly, the architecture of type II NRPS proteins makes them ideal targets for combinatorial biosynthesis and metabolic engineering. Future investigations exploring the molecular basis or protein-protein recognition in type II NRPS pathways will guide these engineering efforts. In this review, we consolidate the broad range of NRPS systems containing type II proteins and focus on structural investigations, enzymatic mechanisms, and protein-protein interactions important to unraveling pathways that produce unique metabolites, including dehydrogenated prolines, substituted benzoic acids, substituted amino acids, and cyclopropanes.
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Affiliation(s)
- Matt J Jaremko
- Department of Chemistry and Biochemistry, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093-0358, USA.
| | - Tony D Davis
- Department of Chemistry and Biochemistry, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093-0358, USA.
| | - Joshua C Corpuz
- Department of Chemistry and Biochemistry, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093-0358, USA.
| | - Michael D Burkart
- Department of Chemistry and Biochemistry, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093-0358, USA.
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41
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Li Y, Rebuffat S. The manifold roles of microbial ribosomal peptide-based natural products in physiology and ecology. J Biol Chem 2020; 295:34-54. [PMID: 31784450 PMCID: PMC6952617 DOI: 10.1074/jbc.rev119.006545] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The ribosomally synthesized and posttranslationally modified peptides (RiPPs), also called ribosomal peptide natural products (RPNPs), form a growing superfamily of natural products that are produced by many different organisms and particularly by bacteria. They are derived from precursor polypeptides whose modification by various dedicated enzymes helps to establish a vast array of chemical motifs. RiPPs have attracted much interest as a source of potential therapeutic agents, and in particular as alternatives to conventional antibiotics to address the bacterial resistance crisis. However, their ecological roles in nature are poorly understood and explored. The present review describes major RiPP actors in competition within microbial communities, the main ecological and physiological functions currently evidenced for RiPPs, and the microbial ecosystems that are the sites for these functions. We envision that the study of RiPPs may lead to discoveries of new biological functions and highlight that a better knowledge of how bacterial RiPPs mediate inter-/intraspecies and interkingdom interactions will hold promise for devising alternative strategies in antibiotic development.
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Affiliation(s)
- Yanyan Li
- Laboratory Molecules of Communication and Adaptation of Microorganisms (MCAM, UMR 7245 CNRS-MNHN), National Museum of Natural History (MNHN), CNRS, CP 54, 57 rue Cuvier 75005, Paris, France.
| | - Sylvie Rebuffat
- Laboratory Molecules of Communication and Adaptation of Microorganisms (MCAM, UMR 7245 CNRS-MNHN), National Museum of Natural History (MNHN), CNRS, CP 54, 57 rue Cuvier 75005, Paris, France.
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42
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Götze S, Stallforth P. Structure, properties, and biological functions of nonribosomal lipopeptides from pseudomonads. Nat Prod Rep 2020; 37:29-54. [DOI: 10.1039/c9np00022d] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Bacteria of the genusPseudomonasdisplay a fascinating metabolic diversity. In this review, we focus our attention on the natural product class of nonribosomal lipopeptides, which help pseudomonads to colonize a wide range of ecological niches.
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Affiliation(s)
- Sebastian Götze
- Faculty 7: Natural and Environmental Sciences
- Institute for Environmental Sciences
- University Koblenz Landau
- 76829 Landau
- Germany
| | - Pierre Stallforth
- Junior Research Group Chemistry of Microbial Communication
- Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI)
- 07745 Jena
- Germany
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43
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Fan W, Liu H, Liu P, Deng X, Chen H, Liu Q, Feng Y. Characterization of protein interaction surface on fatty acyl selectivity of starter condensation domain in lipopeptide biosynthesis. Appl Microbiol Biotechnol 2019; 104:653-660. [DOI: 10.1007/s00253-019-10251-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 10/22/2019] [Accepted: 11/05/2019] [Indexed: 12/11/2022]
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44
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Yang Y, Liu X, Cai J, Chen Y, Li B, Guo Z, Huang G. Genomic characteristics and comparative genomics analysis of the endophytic fungus Sarocladium brachiariae. BMC Genomics 2019; 20:782. [PMID: 31660859 PMCID: PMC6819638 DOI: 10.1186/s12864-019-6095-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 09/10/2019] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Sarocladium brachiariae is a newly identified endophytic fungus isolated from Brachiaria brizantha. A previous study indicated that S. brachiariae had antifungal activity; however, limited genomic information restrains further study. Therefore, we sequenced the genome of S. brachiariae and compared it with the genome of S. oryzae to identify differences between a Sarocladium plant pathogen and an endophyte. RESULTS In this study, we reported a gapless genome sequence of a newly identified endophytic fungus Sarocladium brachiariae isolated from Brachiaria brizantha. The genome of S. brachiariae is 31.86 Mb, with a contig N50 of 3.27 Mb and 9903 protein coding genes. Phylogenomic analysis based on single copy orthologous genes provided insights into the evolutionary relationships of S. brachiariae and its closest species was identified as S. oryzae. Comparative genomics analysis revealed that S. brachiaria has 14.9% more plant cell wall degradation related CAZymes to S. oryzae, and 33.3% more fungal cell wall degradation related CAZymes, which could explain the antifungal activity of S. brachiaria. Based on Antibiotics & Secondary Metabolite Analysis Shell (antiSMASH) analysis, we identified a contact helvolic acid biosynthetic gene cluster (BGC) for the first time in S. oryzae. However, S. brachiaria had seven fewer terpene gene clusters, including helvolic acid BGC, compared with S. oryzae and this may be associated with adaptation to an endophytic lifestyle. Synteny analysis of polyketide synthases (PKS), non-ribosomal peptide synthetases (NRPS), and hybrid (PKS-NRPS) gene clusters between S. brachiariae and S. oryzae revealed that just 37.5% of tested clusters have good synteny, while 63.5% have no or poor synteny. This indicated that the S. brachiariae could potentially synthesize a variety of unknown-function secondary metabolites, which may play an important role in adaptation to its endophytic lifestyle and antifungal activity. CONCLUSIONS The data provided a better understanding of the Sarocladium brachiariae genome. Further comparative genomic analysis provided insight into the genomic basis of its endophytic lifestyle and antifungal activity.
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Affiliation(s)
- Yang Yang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, Haikou, 571101 China
| | - Xiaobao Liu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, Haikou, 571101 China
| | - Jimiao Cai
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, Haikou, 571101 China
| | - Yipeng Chen
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, Haikou, 571101 China
| | - Boxun Li
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, Haikou, 571101 China
| | - Zhikai Guo
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, Haikou, 571101 China
| | - Guixiu Huang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, 4 Xueyuan Road, Haikou, 571101 China
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45
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Pass-back chain extension expands multimodular assembly line biosynthesis. Nat Chem Biol 2019; 16:42-49. [PMID: 31636431 PMCID: PMC6917876 DOI: 10.1038/s41589-019-0385-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 09/06/2019] [Indexed: 11/26/2022]
Abstract
Modular nonribosomal peptide synthetase (NRPS) and polyketide synthase (PKS) enzymatic assembly lines are large and dynamic protein machines that generally effect a linear sequence of catalytic cycles. Here we report the heterologous reconstitution and comprehensive characterization of two hybrid NRPS-PKS assembly lines that defy many standard rules of assembly line biosynthesis to generate a large combinatorial library of cyclic lipodepsipeptide protease inhibitors called thalassospiramides. We generate a series of precise domain-inactivating mutations in thalassospiramide assembly lines and present evidence for an unprecedented biosynthetic model that invokes inter-module substrate activation and tailoring, module skipping, and pass-back chain extension, whereby the ability to pass the growing chain back to a preceding module is flexible and substrate-driven. Expanding bidirectional inter-module domain interactions could represent a viable mechanism for generating chemical diversity without increasing the size of biosynthetic assembly lines and challenges our understanding of the potential elasticity of multi-modular megaenzymes.
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46
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Liu Q, Fan W, Zhao Y, Deng Z, Feng Y. Probing and Engineering the Fatty Acyl Substrate Selectivity of Starter Condensation Domains of Nonribosomal Peptide Synthetases in Lipopeptide Biosynthesis. Biotechnol J 2019; 15:e1900175. [DOI: 10.1002/biot.201900175] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/25/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Qian Liu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and BiotechnologyShanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Wenjie Fan
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and BiotechnologyShanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Yajin Zhao
- School of PharmacyShanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Zixin Deng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and BiotechnologyShanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Yan Feng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and BiotechnologyShanghai Jiao Tong University Shanghai 200240 P. R. China
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47
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Brown AS, Calcott MJ, Owen JG, Ackerley DF. Structural, functional and evolutionary perspectives on effective re-engineering of non-ribosomal peptide synthetase assembly lines. Nat Prod Rep 2019; 35:1210-1228. [PMID: 30069573 DOI: 10.1039/c8np00036k] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: up to May 2018 Non-ribosomal peptide synthetases (NRPSs) are mega-enzymes that form modular templates to assemble specific peptide products, independent of the ribosome. The autonomous nature of the modules in the template offers prospects for re-engineering NRPS enzymes to generate modified peptide products. Although this has clearly been a primary mechanism of natural product diversification throughout evolution, equivalent strategies have proven challenging to implement in the laboratory. In this review we examine key examples of successful and less-successful re-engineering of NRPS templates to generate novel peptides, with the aim of extracting practical guidelines to inform future efforts. We emphasise the importance of maintaining effective protein-protein interactions in recombinant NRPS templates, and identify strengths and limitations of diverse strategies for achieving different engineering outcomes.
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Affiliation(s)
- Alistair S Brown
- School of Biological Sciences, Victoria University of Wellington, New Zealand.
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48
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Izoré T, Cryle MJ. The many faces and important roles of protein-protein interactions during non-ribosomal peptide synthesis. Nat Prod Rep 2019; 35:1120-1139. [PMID: 30207358 DOI: 10.1039/c8np00038g] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Covering: up to July 2018 Non-ribosomal peptide synthetase (NRPS) machineries are complex, multi-domain proteins that are responsible for the biosynthesis of many important, peptide-derived compounds. By decoupling peptide synthesis from the ribosome, NRPS assembly lines are able to access a significant pool of amino acid monomers for peptide synthesis. This is combined with a modular protein architecture that allows for great variation in stereochemistry, peptide length, cyclisation state and further modifications. The architecture of NRPS assembly lines relies upon a repetitive set of catalytic domains, which are organised into modules responsible for amino acid incorporation. Central to NRPS-mediated biosynthesis is the carrier protein (CP) domain, to which all intermediates following initial monomer activation are bound during peptide synthesis up until the final handover to the thioesterase domain that cleaves the mature peptide from the NRPS. This mechanism makes understanding the protein-protein interactions that occur between different NRPS domains during peptide biosynthesis of crucial importance to understanding overall NRPS function. This endeavour is also highly challenging due to the inherent flexibility and dynamics of NRPS systems. In this review, we present the current state of understanding of the protein-protein interactions that govern NRPS-mediated biosynthesis, with a focus on insights gained from structural studies relating to CP domain interactions within these impressive peptide assembly lines.
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Affiliation(s)
- Thierry Izoré
- The Monash Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology and ARC Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Victoria 3800, Australia.
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Modification and de novo design of non-ribosomal peptide synthetases using specific assembly points within condensation domains. Nat Chem 2019; 11:653-661. [PMID: 31182822 DOI: 10.1038/s41557-019-0276-z] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 04/26/2019] [Indexed: 11/09/2022]
Abstract
Non-ribosomal peptide synthetases (NRPSs) are giant enzyme machines that activate amino acids in an assembly line fashion. As NRPSs are not restricted to the incorporation of the 20 proteinogenic amino acids, their efficient manipulation would enable microbial production of a diverse range of peptides; however, the structural requirements for reprogramming NRPSs to facilitate the production of new peptides are not clear. Here we describe a new fusion point inside the condensation domains of NRPSs that results in the development of the exchange unit condensation domain (XUC) concept, which enables the efficient production of peptides, even containing non-natural amino acids, in yields up to 280 mg l-1. This allows the generation of more specific NRPSs, reducing the number of unwanted peptide derivatives, but also the generation of peptide libraries. The XUC might therefore be suitable for the future optimization of peptide production and the identification of bioactive peptide derivatives for pharmaceutical and other applications.
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50
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Abstract
Landmark achievements in chemical and structural biology have advanced our understanding of nonribosomal peptide synthetase mechanisms. However, nature's proven ability to re-engineer these enzymes remains difficult to recapitulate synthetically. In a recent issue of Cell Chemical Biology, Meyer et al. (2016) sought to extract new clues from old (evolutionary) evidence.
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Affiliation(s)
- David F Ackerley
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand.
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