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Put H, Gerstmans H, Vande Capelle H, Fauvart M, Michiels J, Masschelein J. Bacillus subtilis as a host for natural product discovery and engineering of biosynthetic gene clusters. Nat Prod Rep 2024; 41:1113-1151. [PMID: 38465694 DOI: 10.1039/d3np00065f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Covering: up to October 2023Many bioactive natural products are synthesized by microorganisms that are either difficult or impossible to cultivate under laboratory conditions, or that produce only small amounts of the desired compound. By transferring biosynthetic gene clusters (BGCs) into alternative host organisms that are more easily cultured and engineered, larger quantities can be obtained and new analogues with potentially improved biological activity or other desirable properties can be generated. Moreover, expression of cryptic BGCs in a suitable host can facilitate the identification and characterization of novel natural products. Heterologous expression therefore represents a valuable tool for natural product discovery and engineering as it allows the study and manipulation of their biosynthetic pathways in a controlled setting, enabling innovative applications. Bacillus is a genus of Gram-positive bacteria that is widely used in industrial biotechnology as a host for the production of proteins from diverse origins, including enzymes and vaccines. However, despite numerous successful examples, Bacillus species remain underexploited as heterologous hosts for the expression of natural product BGCs. Here, we review important advantages that Bacillus species offer as expression hosts, such as high secretion capacity, natural competence for DNA uptake, and the increasing availability of a wide range of genetic tools for gene expression and strain engineering. We evaluate different strain optimization strategies and other critical factors that have improved the success and efficiency of heterologous natural product biosynthesis in B. subtilis. Finally, future perspectives for using B. subtilis as a heterologous host are discussed, identifying research gaps and promising areas that require further exploration.
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Affiliation(s)
- Hanne Put
- Centre of Microbial and Plant Genetics, KU Leuven, 3001 Leuven, Belgium
- VIB-KU Leuven Center for Microbiology, Flanders Institute for Biotechnology, 3001 Leuven, Belgium.
| | - Hans Gerstmans
- VIB-KU Leuven Center for Microbiology, Flanders Institute for Biotechnology, 3001 Leuven, Belgium.
- Laboratory for Biomolecular Discovery & Engineering, KU Leuven, 3001 Leuven, Belgium
- Biosensors Group, KU Leuven, 3001 Leuven, Belgium
| | - Hanne Vande Capelle
- VIB-KU Leuven Center for Microbiology, Flanders Institute for Biotechnology, 3001 Leuven, Belgium.
- Laboratory for Biomolecular Discovery & Engineering, KU Leuven, 3001 Leuven, Belgium
| | - Maarten Fauvart
- Centre of Microbial and Plant Genetics, KU Leuven, 3001 Leuven, Belgium
- VIB-KU Leuven Center for Microbiology, Flanders Institute for Biotechnology, 3001 Leuven, Belgium.
- imec, 3001 Leuven, Belgium
| | - Jan Michiels
- Centre of Microbial and Plant Genetics, KU Leuven, 3001 Leuven, Belgium
- VIB-KU Leuven Center for Microbiology, Flanders Institute for Biotechnology, 3001 Leuven, Belgium.
| | - Joleen Masschelein
- VIB-KU Leuven Center for Microbiology, Flanders Institute for Biotechnology, 3001 Leuven, Belgium.
- Laboratory for Biomolecular Discovery & Engineering, KU Leuven, 3001 Leuven, Belgium
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Li H, Ding W, Zhang Q. Discovery and engineering of ribosomally synthesized and post-translationally modified peptide (RiPP) natural products. RSC Chem Biol 2024; 5:90-108. [PMID: 38333193 PMCID: PMC10849128 DOI: 10.1039/d3cb00172e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/17/2023] [Indexed: 02/10/2024] Open
Abstract
Ribosomally synthesized and post-translationally modified peptides (RiPPs) represent a diverse superfamily of natural products with immense potential for drug development. This review provides a concise overview of the recent advances in the discovery of RiPP natural products, focusing on rational strategies such as bioactivity guided screening, enzyme or precursor-based genome mining, and biosynthetic engineering. The challenges associated with activating silent biosynthetic gene clusters and the development of elaborate catalytic systems are also discussed. The logical frameworks emerging from these research studies offer valuable insights into RiPP biosynthesis and engineering, paving the way for broader pharmaceutic applications of these peptide natural products.
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Affiliation(s)
- He Li
- Department of Chemistry, Fudan University Shanghai 200433 China
| | - Wei Ding
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University Shanghai 200240 China
| | - Qi Zhang
- Department of Chemistry, Fudan University Shanghai 200433 China
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Akomoneh EA, Gestels Z, Abdellati S, Vereecken K, Bartholomeeusen K, Van den Bossche D, Kenyon C, Manoharan-Basil SS. Genome Mining Uncovers NRPS and PKS Clusters in Rothia dentocariosa with Inhibitory Activity against Neisseria Species. Antibiotics (Basel) 2023; 12:1592. [PMID: 37998794 PMCID: PMC10668837 DOI: 10.3390/antibiotics12111592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 10/31/2023] [Accepted: 11/02/2023] [Indexed: 11/25/2023] Open
Abstract
The growing global threat of antimicrobial resistance is reaching a crisis point as common bacterial infections, including those caused by pathogenic Neisseria species, are becoming increasingly untreatable. This is compelling the scientific community to search for new antimicrobial agents, taking advantage of computational mining and using whole genome sequences to discover natural products from the human microbiome with antibiotic effects. In this study, we investigated the crude extract from a Rothia dentocariosa strain with demonstrated antimicrobial activity against pathogenic Neisseria spp. by spot-on-lawn assay. The genomic DNA of the R. dentocariosa strain was sequenced, and bioinformatic evaluation was performed using antiSMASH and PRISM to search for biosynthetic gene clusters (BGCs). The crude extract with potential antimicrobial activity was run on Tricine-SDS-PAGE, and the putative peptides were characterised using liquid chromatography-tandem mass spectrometry (LC-MS). The crude extract inhibited the growth of the pathogenic Neisseria spp. Six BGCs were identified corresponding to non-ribosomal peptide synthases (NRPSs), polyketide synthases (PKSs), and ribosomally synthesised and post-translationally modified peptides. Three peptides were also identified corresponding to Actinorhodin polyketide putative beta-ketoacyl synthase 1. These findings serve as a useful reference to facilitate the research and development of NRPS and PKS as antimicrobial products against multidrug-resistant N. gonorrhoeae.
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Affiliation(s)
- Elvis Achondou Akomoneh
- HIV/STI Unit, Department of Clinical Sciences, Institute of Tropical Medicine Antwerp, 2000 Antwerp, Belgium; (E.A.A.); (Z.G.); (S.S.M.-B.)
- Department of Microbiology and Parasitology, University of Bamenda, Bambili P.O. Box 39, Cameroon
| | - Zina Gestels
- HIV/STI Unit, Department of Clinical Sciences, Institute of Tropical Medicine Antwerp, 2000 Antwerp, Belgium; (E.A.A.); (Z.G.); (S.S.M.-B.)
| | - Saïd Abdellati
- Clinical Reference Laboratory, Department of Clinical Sciences, Institute of Tropical Medicine, 2000 Antwerp, Belgium; (S.A.); (D.V.d.B.)
| | - Katleen Vereecken
- Virology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, 2000 Antwerp, Belgium; (K.V.); (K.B.)
| | - Koen Bartholomeeusen
- Virology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, 2000 Antwerp, Belgium; (K.V.); (K.B.)
| | - Dorien Van den Bossche
- Clinical Reference Laboratory, Department of Clinical Sciences, Institute of Tropical Medicine, 2000 Antwerp, Belgium; (S.A.); (D.V.d.B.)
| | - Chris Kenyon
- HIV/STI Unit, Department of Clinical Sciences, Institute of Tropical Medicine Antwerp, 2000 Antwerp, Belgium; (E.A.A.); (Z.G.); (S.S.M.-B.)
- Virology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, 2000 Antwerp, Belgium; (K.V.); (K.B.)
- Department of Medicine, University of Cape Town, Cape Town 7700, South Africa
| | - Sheeba Santhini Manoharan-Basil
- HIV/STI Unit, Department of Clinical Sciences, Institute of Tropical Medicine Antwerp, 2000 Antwerp, Belgium; (E.A.A.); (Z.G.); (S.S.M.-B.)
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Ariute JC, Coelho-Rocha ND, Dantas CWD, de Vasconcelos LAT, Profeta R, de Jesus Sousa T, de Souza Novaes A, Galotti B, Gomes LG, Gimenez EGT, Diniz C, Dias MV, de Jesus LCL, Jaiswal AK, Tiwari S, Carvalho R, Benko-Iseppon AM, Brenig B, Azevedo V, Barh D, Martins FS, Aburjaile F. Probiogenomics of Leuconostoc Mesenteroides Strains F-21 and F-22 Isolated from Human Breast Milk Reveal Beneficial Properties. Probiotics Antimicrob Proteins 2023:10.1007/s12602-023-10170-7. [PMID: 37804433 DOI: 10.1007/s12602-023-10170-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2023] [Indexed: 10/09/2023]
Abstract
Bacteria of the Leuconostoc genus are Gram-positive bacteria that are commonly found in raw milk and persist in fermented dairy products and plant food. Studies have already explored the probiotic potential of L. mesenteroides, but not from a probiogenomic perspective, which aims to explore the molecular features responsible for their phenotypes. In the present work, probiogenomic approaches were applied in strains F-21 and F-22 of L. mesenteroides isolated from human milk to assess their biosafety at the molecular level and to correlate molecular features with their potential probiotic characteristics. The complete genome of strain F-22 is 1.99 Mb and presents one plasmid, while the draft genome of strain F-21 is 1.89 Mb and presents four plasmids. A high percentage of average nucleotide identity among other genomes of L. mesenteroides (≥ 96%) corroborated the previous taxonomic classification of these isolates. Genomic regions that influence the probiotic properties were identified and annotated. Both strains exhibited wide genome plasticity, cell adhesion ability, proteolytic activity, proinflammatory and immunomodulation capacity through interaction with TLR-NF-κB and TLR-MAPK pathway components, and no antimicrobial resistance, denoting their potential to be candidate probiotics. Further, the strains showed bacteriocin production potential and the presence of acid, thermal, osmotic, and bile salt resistance genes, indicating their ability to survive under gastrointestinal stress. Taken together, our results suggest that L. mesenteroides F-21 and F-22 are promising candidates for probiotics in the food and pharmaceutical industries.
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Affiliation(s)
- Juan Carlos Ariute
- Laboratory of Integrative Bioinformatics, Preventive Veterinary Medicine Department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
- Graduate Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Nina Dias Coelho-Rocha
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Carlos Willian Dias Dantas
- Graduate Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Larissa Amorim Tourinho de Vasconcelos
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Rodrigo Profeta
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
- Graduate Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Thiago de Jesus Sousa
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Ane de Souza Novaes
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Bruno Galotti
- Laboratory of Biotherapeutic Agents, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Lucas Gabriel Gomes
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
- Graduate Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Enrico Giovanelli Toccani Gimenez
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
- Graduate Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Carlos Diniz
- Laboratory of Integrative Bioinformatics, Preventive Veterinary Medicine Department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Mariana Vieira Dias
- Laboratory of Integrative Bioinformatics, Preventive Veterinary Medicine Department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Luís Cláudio Lima de Jesus
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Arun Kumar Jaiswal
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Sandeep Tiwari
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, 40231-300, Brazil
| | - Rodrigo Carvalho
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, 40231-300, Brazil
| | - Ana Maria Benko-Iseppon
- Laboratory of Plants Genetics and Biotechnology, Genetics Department, Biosciences Center, Federal University of Pernambuco, Recife, Pernambuco, 50740-600, Brazil
| | - Bertram Brenig
- Institute of Veterinary Medicine, University of Göttingen, Burckhardtweg 2, 37077, Göttingen, Germany
| | - Vasco Azevedo
- Laboratory of Cellular and Molecular Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Debmalya Barh
- Institute of Integrative Omics and Applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, 721172, India
| | - Flaviano S Martins
- Laboratory of Biotherapeutic Agents, Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Flavia Aburjaile
- Laboratory of Integrative Bioinformatics, Preventive Veterinary Medicine Department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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Covas C, Figueiredo G, Gomes M, Santos T, Mendo S, Caetano TS. The Pangenome of Gram-Negative Environmental Bacteria Hides a Promising Biotechnological Potential. Microorganisms 2023; 11:2445. [PMID: 37894103 PMCID: PMC10609062 DOI: 10.3390/microorganisms11102445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 10/29/2023] Open
Abstract
Secondary metabolites (SMs) from environmental bacteria offer viable solutions for various health and environmental challenges. Researchers are employing advanced bioinformatic tools to investigate less-explored microorganisms and unearth novel bioactive compounds. In this research area, our understanding of SMs from environmental Gram-negative bacteria lags behind that of its Gram-positive counterparts. In this regard, Pedobacter spp. have recently gained attention, not only for their role as plant growth promoters but also for their potential in producing antimicrobials. This study focuses on the genomic analysis of Pedobacter spp. to unveil the diversity of the SMs encoded in their genomes. Among the 41 genomes analyzed, a total of 233 biosynthetic gene clusters (BGCs) were identified, revealing the potential for the production of diverse SMs, including RiPPs (27%), terpenes (22%), hybrid SMs (17%), PKs (12%), NRPs (9%) and siderophores (6%). Overall, BGC distribution did not correlate with phylogenetic lineage and most of the BGCs showed no significant hits in the MIBiG database, emphasizing the uniqueness of the compounds that Pedobacter spp. can produce. Of all the species examined, P. cryoconitis and P. lusitanus stood out for having the highest number and diversity of BGCs. Focusing on their applicability and ecological functions, we investigated in greater detail the BGCs responsible for siderophore and terpenoid production in these species and their relatives. Our findings suggest that P. cryoconitis and P. lusitanus have the potential to produce novel mixtures of siderophores, involving bifunctional IucAC/AcD NIS synthetases, as well as carotenoids and squalene. This study highlights the biotechnological potential of Pedobacter spp. in medicine, agriculture and other industries, emphasizing the need for a continued exploration of its SMs and their applications.
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Affiliation(s)
| | | | | | | | | | - Tânia S. Caetano
- CESAM and Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal; (C.C.); (G.F.); (S.M.)
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Humphreys JR, Bean Z, Twycross J, Winzer K. The Lanthipeptide Synthetase-like Protein CA_C0082 Is an Effector of Agr Quorum Sensing in Clostridium acetobutylicum. Microorganisms 2023; 11:1460. [PMID: 37374961 DOI: 10.3390/microorganisms11061460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Lanthipeptide synthetases are present in all domains of life. They catalyze a crucial step during lanthipeptide biosynthesis by introducing thioether linkages during posttranslational peptide modification. Lanthipeptides have a wide range of functions, including antimicrobial and morphogenetic activities. Intriguingly, several Clostridium species contain lanthipeptide synthetase-like genes of the class II (lanM) family but lack other components of the lanthipeptide biosynthetic machinery. In all instances, these genes are located immediately downstream of putative agr quorum sensing operons. The physiological role and mode of action of the encoded LanM-like proteins remain uncertain as they lack conserved catalytic residues. Here we show for the industrial organism Clostridium acetobutylicum that the LanM-like protein CA_C0082 is not required for the production of active AgrD-derived signaling peptide but nevertheless acts as an effector of Agr quorum sensing. Expression of CA_C0082 was shown to be controlled by the Agr system and is a prerequisite for granulose (storage polymer) formation. The accumulation of granulose, in turn, was shown to be required for maximal spore formation but also to reduce early solvent formation. CA_C0082 and its putative homologs appear to be closely associated with Agr systems predicted to employ signaling peptides with six-membered ring structures and may represent a new subfamily of LanM-like proteins. This is the first time their contribution to bacterial Agr signaling has been described.
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Affiliation(s)
- Jonathan R Humphreys
- BBSRC/EPSRC Synthetic Biology Research Centre (SBRC), School of Life Sciences, University Park, The University of Nottingham, Nottingham NG7 2RD, UK
| | - Zak Bean
- BBSRC/EPSRC Synthetic Biology Research Centre (SBRC), School of Life Sciences, University Park, The University of Nottingham, Nottingham NG7 2RD, UK
| | - Jamie Twycross
- School of Computer Science, Jubilee Campus, The University of Nottingham, Nottingham NG8 1BB, UK
| | - Klaus Winzer
- BBSRC/EPSRC Synthetic Biology Research Centre (SBRC), School of Life Sciences, University Park, The University of Nottingham, Nottingham NG7 2RD, UK
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In Silico Prediction of Secondary Metabolites and Biosynthetic Gene Clusters Analysis of Streptomyces thinghirensis HM3 Isolated from Arid Soil. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9010065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Natural products produced by microorganisms are considered an important resource of bioactive secondary metabolites, such as anticancer, antifungal, antibiotic, and immunosuppressive molecules. Streptomyces are the richest source of bioactive natural products via possessing a wide number of secondary metabolite biosynthetic gene clusters (SM-BGCs). Based on rapid development in sequencing technologies with advances in genome mining, exploring the newly isolated Streptomyces species for possible new secondary metabolites is mandatory to find novel natural products. The isolated Streptomyces thinghirensis strain HM3 from arid and sandy texture soil in Qassim, SA, exerted inhibition activity against tested animal pathogenic Gram-positive bacteria and pathogenic fungal species. In this study, we report the draft genome of S. thinghirensis strain HM3, which consists of 7,139,324 base pairs (bp), with an average G+C content of 71.49%, predicting 7949 open reading frames, 12 rRNA operons (5S, 16S, 23S) and 60 tRNAs. An in silico analysis of strain HM3 genome by the antiSMASH and PRISM 4 online software for SM-BGCs predicted 16 clusters, including four terpene, one lantipeptide, one siderophore, two polyketide synthase (PKS), two non-ribosomal peptide synthetase (NRPS) cluster)/NRPS-like fragment, two RiPP/RiPP-like (ribosomally synthesised and post-translationally modified peptide product), two butyrolactone, one CDPS (tRNA-dependent cyclodipeptide synthases), and one other (cluster containing a secondary metabolite-related protein that does not fit into any other category) BGC. The presented BGCs inside the genome, along with antibacterial and antifungal activity, indicate that HM3 may represent an invaluable source for new secondary metabolites.
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Oliveira IMFD, Ng DYK, van Baarlen P, Stegger M, Andersen PS, Wells JM. Comparative genomics of Rothia species reveals diversity in novel biosynthetic gene clusters and ecological adaptation to different eukaryotic hosts and host niches. Microb Genom 2022; 8. [PMID: 36165601 DOI: 10.1099/mgen.0.000854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Rothia species are understudied members of the phylum Actinobacteria and prevalent colonizers of the human and animal upper respiratory tract and oral cavity. The oral cavity, including the palatine tonsils, is colonized by a complex microbial community, which compete for resources, actively suppress competitors and influence host physiology. We analysed genomic data from 43 new porcine Rothia isolates, together with 112 publicly available draft genome sequences of Rothia isolates from humans, animals and the environment. In all Rothia genomes, we identified biosynthetic gene clusters predicted to produce antibiotic non-ribosomal peptides, iron scavenging siderophores and other secondary metabolites that modulate microbe-microbe and potentially microbe-host interactions. In vitro overlay inhibition assays corroborated the hypothesis that specific strains produce natural antibiotics. Rothia genomes encode a large number of carbohydrate-active enzymes (CAZy), with varying CAZy activities among the species found in different hosts, host niches and environments. These findings reveal competition mechanisms and metabolic specializations linked to ecological adaptation of Rothia species in different hosts.
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Affiliation(s)
| | - Duncan Y K Ng
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut (SSI), Copenhagen, Denmark
| | - Peter van Baarlen
- Host-Microbe Interactomics Group, Animal Sciences Department, Wageningen University and Research, Wageningen, Netherlands
| | - Marc Stegger
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut (SSI), Copenhagen, Denmark
| | - Paal Skytt Andersen
- Department of Bacteria, Parasites and Fungi, Statens Serum Institut (SSI), Copenhagen, Denmark
| | - Jerry M Wells
- Host-Microbe Interactomics Group, Animal Sciences Department, Wageningen University and Research, Wageningen, Netherlands
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Rivera-Chávez J, Ceapă CD, Figueroa M. Biological Dark Matter Exploration using Data Mining for the Discovery of Antimicrobial Natural Products. PLANTA MEDICA 2022; 88:702-720. [PMID: 35697058 DOI: 10.1055/a-1795-0562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The discovery of novel antimicrobials has significantly slowed down over the last three decades. At the same time, humans rely increasingly on antimicrobials because of the progressive antimicrobial resistance in medical practices, human communities, and the environment. Data mining is currently considered a promising option in the discovery of new antibiotics. Some of the advantages of data mining are the ability to predict chemical structures from sequence data, anticipation of the presence of novel metabolites, the understanding of gene evolution, and the corroboration of data from multiple omics technologies. This review analyzes the state-of-the-art for data mining in the fields of bacteria, fungi, and plant genomic data, as well as metabologenomics. It also summarizes some of the most recent research accomplishments in the field, all pinpointing to innovation through uncovering and implementing the next generation of antimicrobials.
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Affiliation(s)
- José Rivera-Chávez
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Corina-Diana Ceapă
- Instituto de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Mario Figueroa
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
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Helfrich M, Entian KD, Stein T. Antibiotic profiling of wild-type bacilli led to the discovery of new lanthipeptide subtilin-producing Bacillus spizizenii strains whose 16S rDNA sequences differ from the B. spizizenii typing strain. INTERNATIONAL MICROBIOLOGY : THE OFFICIAL JOURNAL OF THE SPANISH SOCIETY FOR MICROBIOLOGY 2022; 25:839-850. [PMID: 35902452 PMCID: PMC9526687 DOI: 10.1007/s10123-022-00266-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 06/12/2022] [Accepted: 07/06/2022] [Indexed: 11/25/2022]
Abstract
Two dozen field-collected Bacillus and a dozen Bacillus spizizenii wild-type strains from strain collections were selected on the basis of their antagonistic properties against the Gram-positive strain Micrococcus luteus. Based on their genetic and antibiotic profiles, they were characterized (subtilin encoding spaS gene sequences, mass spectrometric, and quantitative-reversed phase liquid chromatographic analyses, as well as the presence of the lanthionine cyclase protein SpaC by western blotting), seven novel producers of the lanthipeptide subtilin. Phylogenetic analyses of the subtilin-producing wild-type strains based on their 16S rRNA sequences showed that all seven strains could be classified as B. spizizenii: The field-collected strains HS and N5, as well as strains DSM 618, 1087, 6395, 6405, and 8439 from the German Collection of Microorganisms and Cell Cultures. To the best of our knowledge, all B. spizizenii strains described so far are characterized by the fact that they can produce a lanthipeptide of the subtilin family. Both the lanthipeptide structures and the organization and sequences of the 16S rRNA-encoding genes suggest a subdivision of B. spizizenii into subspecies: The subtilin-producing B. spizizenii strains are distinctly different from the entianin-producing B. spizizenii typing strain TU-B-10 T (DSM 15029 T).
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Affiliation(s)
- Markus Helfrich
- Life Sciences, Johann Wolfgang-Goethe-University, Max v. Laue Str. 9, 60439, Frankfurt/Main, Germany
- Jennewein Biotechnologie GmbH, Maarweg 32, 53619, Rheinbreitbach, Germany
| | - Karl-Dieter Entian
- Life Sciences, Johann Wolfgang-Goethe-University, Max v. Laue Str. 9, 60439, Frankfurt/Main, Germany
| | - Torsten Stein
- Life Sciences, Johann Wolfgang-Goethe-University, Max v. Laue Str. 9, 60439, Frankfurt/Main, Germany.
- Chemistry & Molecular Biotechnology, Aalen University, Beethovenstraße 1, 73430, Aalen, Germany.
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Fernández-López M, Sánchez-Reyes A, Barcelos C, Sidón-Ceseña K, Leite RB, Lago-Lestón A. Deep-Sea Sediments from the Southern Gulf of Mexico Harbor a Wide Diversity of PKS I Genes. Antibiotics (Basel) 2022; 11:antibiotics11070887. [PMID: 35884142 PMCID: PMC9311598 DOI: 10.3390/antibiotics11070887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/08/2022] [Accepted: 06/20/2022] [Indexed: 11/19/2022] Open
Abstract
The excessive use of antibiotics has triggered the appearance of new resistant strains, which is why great interest has been taken in the search for new bioactive compounds capable of overcoming this emergency in recent years. Massive sequencing tools have enabled the detection of new microorganisms that cannot be cultured in a laboratory, thus opening the door to the search for new biosynthetic genes. The great variety in oceanic environments in terms of pressure, salinity, temperature, and nutrients enables marine microorganisms to develop unique biochemical and physiological properties for their survival, enhancing the production of secondary metabolites that can vary from those produced by terrestrial microorganisms. We performed a search for type I PKS genes in metagenomes obtained from the marine sediments of the deep waters of the Gulf of Mexico using Hidden Markov Models. More than 2000 candidate genes were detected in the metagenomes that code for type I PKS domains, while biosynthetic pathways that may code for other secondary metabolites were also detected. Our research demonstrates the great potential use of the marine sediments of the Gulf of Mexico for identifying genes that code for new secondary metabolites.
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Affiliation(s)
- Maikel Fernández-López
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca 62209, Mexico;
| | - Ayixon Sánchez-Reyes
- CONACYT-Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Av. Universidad 2001, Col. Chamilpa, Cuernavaca 62210, Mexico;
| | - Clara Barcelos
- Posgrado de Ciencias de la Vida, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico; (C.B.); (K.S.-C.)
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico
| | - Karla Sidón-Ceseña
- Posgrado de Ciencias de la Vida, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico; (C.B.); (K.S.-C.)
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico
| | - Ricardo B. Leite
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, 2780-156 Oeiras, Portugal;
| | - Asunción Lago-Lestón
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico
- Correspondence:
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Biosynthesis and Production of Class II Bacteriocins of Food-Associated Lactic Acid Bacteria. FERMENTATION 2022. [DOI: 10.3390/fermentation8050217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Bacteriocins are ribosomally synthesized peptides made by bacteria that inhibit the growth of similar or closely related bacterial strains. Class II bacteriocins are a class of bacteriocins that are heat-resistant and do not undergo extensive posttranslational modification. In lactic acid bacteria (LAB), class II bacteriocins are widely distributed, and some of them have been successfully applied as food preservatives or antibiotic alternatives. Class II bacteriocins can be further divided into four subcategories. In the same subcategory, variations were observed in terms of amino acid identity, peptide length, pI, etc. The production of class II bacteriocin is controlled by a dedicated gene cluster located in the plasmid or chromosome. Besides the pre-bacteriocin encoding gene, the gene cluster generally includes various combinations of immunity, transportation, and regulatory genes. Among class II bacteriocin-producing LAB, some strains/species showed low yield. A multitude of fermentation factors including medium composition, temperature, and pH have a strong influence on bacteriocin production which is usually strain-specific. Consequently, scientists are motivated to develop high-yielding strains through the genetic engineering approach. Thus, this review aims to present and discuss the distribution, sequence characteristics, as well as biosynthesis of class II bacteriocins of LAB. Moreover, the integration of modern biotechnology and genetics with conventional fermentation technology to improve bacteriocin production will also be discussed in this review.
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Genomic Insights into Omega-3 Polyunsaturated Fatty Acid Producing Shewanella sp. N2AIL from Fish Gut. BIOLOGY 2022; 11:biology11050632. [PMID: 35625360 PMCID: PMC9138089 DOI: 10.3390/biology11050632] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/09/2022] [Accepted: 04/12/2022] [Indexed: 11/16/2022]
Abstract
The genus Shewanella is widely distributed in niches ranging from an aquatic environment to spoiled fish and is loaded with various ecologically and commercially important metabolites. Bacterial species under this genus find application in bioelectricity generation and bioremediation due to their capability to use pollutants as the terminal electron acceptor and could produce health-beneficial omega-3 fatty acids, particularly eicosapentaenoic acid (EPA). Here, the genome sequence of an EPA-producing bacterium, Shewanella sp. N2AIL, isolated from the gastrointestinal tract of Tilapia fish, is reported. The genome size of the strain was 4.8 Mb with a GC content of 46.3% containing 4385 protein-coding genes. Taxonogenomic analysis assigned this strain to the genus Shewanella on the basis of average nucleotide identity (ANI) and in silico DNA-DNA hybridization (DDH), phylogenetically most closely related with S. baltica NCTC 10735T. The comparative genome analysis with the type strain of S. baltica revealed 693 unique genes in the strain N2AIL, highlighting the variation at the strain level. The genes associated with stress adaptation, secondary metabolite production, antibiotic resistance, and metal reduction were identified in the genome suggesting the potential of the bacterium to be explored as an industrially important strain. PUFA synthase gene cluster of size ~20.5 kb comprising all the essential domains for EPA biosynthesis arranged in five ORFs was also identified in the strain N2AIL. The study provides genomic insights into the diverse genes of Shewanella sp. N2AIL, which is particularly involved in adaptation strategies and prospecting secondary metabolite potential, specifically the biosynthesis of omega-3 polyunsaturated fatty acids.
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Whole-Genome Sequencing and Comparative Genomic Analysis of Antimicrobial Producing Streptococcus lutetiensis from the Rumen. Microorganisms 2022; 10:microorganisms10030551. [PMID: 35336126 PMCID: PMC8949432 DOI: 10.3390/microorganisms10030551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/17/2022] [Accepted: 02/23/2022] [Indexed: 02/05/2023] Open
Abstract
Antimicrobial peptides (AMPs) can efficiently control different microbial pathogens and show the potential to be applied in clinical practice and livestock production. In this work, the aim was to isolate AMP-producing ruminal streptococci and to characterize their genetic features through whole-genome sequencing. We cultured 463 bacterial isolates from the rumen of Nelore bulls, 81 of which were phenotypically classified as being Streptococcaceae. Five isolates with broad-range activity were genome sequenced and confirmed as being Streptococcus lutetiensis. The genetic features linked to their antimicrobial activity or adaptation to the rumen environment were characterized through comparative genomics. The genome of S. lutetiensis UFV80 harbored a putative CRISPR-Cas9 system (Type IIA). Computational tools were used to discover novel biosynthetic clusters linked to the production of bacteriocins. All bacterial genomes harbored genetic clusters related to the biosynthesis of class I and class II bacteriocins. SDS-PAGE confirmed the results obtained in silico and demonstrated that the class II bacteriocins predicted in the genomes of three S. lutetiensis strains had identical molecular mass (5197 Da). These results demonstrate that ruminal bacteria of the Streptococcus bovis/equinus complex represent a promising source of novel antimicrobial peptides.
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15
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Xia L, Miao Y, Cao A, Liu Y, Liu Z, Sun X, Xue Y, Xu Z, Xun W, Shen Q, Zhang N, Zhang R. Biosynthetic gene cluster profiling predicts the positive association between antagonism and phylogeny in Bacillus. Nat Commun 2022; 13:1023. [PMID: 35197480 PMCID: PMC8866423 DOI: 10.1038/s41467-022-28668-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 02/01/2022] [Indexed: 01/23/2023] Open
Abstract
Understanding the driving forces and intrinsic mechanisms of microbial competition is a fundamental question in microbial ecology. Despite the well-established negative correlation between exploitation competition and phylogenetic distance, the process of interference competition that is exemplified by antagonism remains controversial. Here, we studied the genus Bacillus, a commonly recognized producer of multifarious antibiotics, to explore the role of phylogenetic patterns of biosynthetic gene clusters (BGCs) in mediating the relationship between antagonism and phylogeny. Comparative genomic analysis revealed a positive association between BGC distance and phylogenetic distance. Antagonistic tests demonstrated that the inhibition phenotype positively correlated with both phylogenetic and predicted BGC distance, especially for antagonistic strains possessing abundant BGCs. Mutant-based verification showed that the antagonism was dependent on the BGCs that specifically harbored by the antagonistic strain. These findings highlight that BGC-phylogeny coherence regulates the positive correlation between congeneric antagonism and phylogenetic distance, which deepens our understanding of the driving force and intrinsic mechanism of microbial interactions.
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Affiliation(s)
- Liming Xia
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Youzhi Miao
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - A'li Cao
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Yan Liu
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Zihao Liu
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Xinli Sun
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Yansheng Xue
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Zhihui Xu
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Weibing Xun
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Qirong Shen
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China
| | - Nan Zhang
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-saving fertilizers, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, P. R. China.
| | - Ruifu Zhang
- Key Laboratory of Microbial Resources Collection and Preservation, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 100081, Beijing, P. R. China.
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16
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Muñoz CY, Zhou L, Yi Y, Kuipers OP. Biocontrol properties from phyllospheric bacteria isolated from Solanum lycopersicum and Lactuca sativa and genome mining of antimicrobial gene clusters. BMC Genomics 2022; 23:152. [PMID: 35189837 PMCID: PMC8862347 DOI: 10.1186/s12864-022-08392-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/09/2022] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Biocontrol agents are sustainable eco-friendly alternatives for chemical pesticides that cause adverse effects in the environment and toxicity in animals including humans. An improved understanding of the phyllosphere microbiology is of vital importance for biocontrol development. Most studies have been directed towards beneficial plant-microbe interactions and ignore the pathogens that might affect humans when consuming vegetables. In this study we extended this perspective and investigated potential biocontrol strains isolated from tomato and lettuce phyllosphere that can promote plant growth and potentially antagonize human pathogens as well as plant pathogens. Subsequently, we mined into their genomes for discovery of antimicrobial biosynthetic gene clusters (BGCs), that will be further characterized. RESULTS The antimicrobial activity of 69 newly isolated strains from a healthy tomato and lettuce phyllosphere against several plant and human pathogens was screened. Three strains with the highest antimicrobial activity were selected and characterized (Bacillus subtilis STRP31, Bacillus velezensis SPL51, and Paenibacillus sp. PL91). All three strains showed a plant growth promotion effect on tomato and lettuce. In addition, genome mining of the selected isolates showed the presence of a large variety of biosynthetic gene clusters. A total of 35 BGCs were identified, of which several are already known, but also some putative novel ones were identified. Further analysis revealed that among the novel BGCs, one previously unidentified NRPS and two bacteriocins are encoded, the gene clusters of which were analyzed in more depth. CONCLUSIONS Three recently isolated strains of the Bacillus genus were identified that have high antagonistic activity against lettuce and tomato plant pathogens. Known and unknown antimicrobial BGCs were identified in these antagonistic bacterial isolates, indicating their potential to be used as biocontrol agents. Our study serves as a strong incentive for subsequent purification and characterization of novel antimicrobial compounds that are important for biocontrol.
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Affiliation(s)
- Claudia Y Muñoz
- Department of Molecular Genetics, University of Groningen, Groningen, The Netherlands
| | - Lu Zhou
- Department of Molecular Genetics, University of Groningen, Groningen, The Netherlands
| | - Yunhai Yi
- Department of Molecular Genetics, University of Groningen, Groningen, The Netherlands
| | - Oscar P Kuipers
- Department of Molecular Genetics, University of Groningen, Groningen, The Netherlands.
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Santos-Aberturas J, Vior NM. Beyond Soil-Dwelling Actinobacteria: Fantastic Antibiotics and Where to Find Them. Antibiotics (Basel) 2022; 11:195. [PMID: 35203798 PMCID: PMC8868522 DOI: 10.3390/antibiotics11020195] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/27/2022] [Accepted: 01/29/2022] [Indexed: 12/10/2022] Open
Abstract
Bacterial secondary metabolites represent an invaluable source of bioactive molecules for the pharmaceutical and agrochemical industries. Although screening campaigns for the discovery of new compounds have traditionally been strongly biased towards the study of soil-dwelling Actinobacteria, the current antibiotic resistance and discovery crisis has brought a considerable amount of attention to the study of previously neglected bacterial sources of secondary metabolites. The development and application of new screening, sequencing, genetic manipulation, cultivation and bioinformatic techniques have revealed several other groups of bacteria as producers of striking chemical novelty. Biosynthetic machineries evolved from independent taxonomic origins and under completely different ecological requirements and selective pressures are responsible for these structural innovations. In this review, we summarize the most important discoveries related to secondary metabolites from alternative bacterial sources, trying to provide the reader with a broad perspective on how technical novelties have facilitated the access to the bacterial metabolic dark matter.
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Affiliation(s)
| | - Natalia M. Vior
- Department of Molecular Microbiology, John Innes Centre, Norwich NR7 4UH, UK
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18
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Wambui J, Stevens MJA, Sieber S, Cernela N, Perreten V, Stephan R. Targeted Genome Mining Reveals the Psychrophilic Clostridium estertheticum Complex as a Potential Source for Novel Bacteriocins, Including Cesin A and Estercticin A. Front Microbiol 2022; 12:801467. [PMID: 35095812 PMCID: PMC8792950 DOI: 10.3389/fmicb.2021.801467] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 12/06/2021] [Indexed: 12/31/2022] Open
Abstract
Antimicrobial resistance in pathogenic bacteria is considered a major public health issue necessitating the discovery of alternative antimicrobial compounds. In this regard, targeted genome mining in bacteria occupying under-explored ecological niches has the potential to reveal such compounds, including bacteriocins. In this study, we determined the bacteriocin biosynthetic potential of the psychrophilic Clostridium estertheticum complex (CEC) through a combination of genome mining and phenotypic screening assays. The genome mining was performed in 40 CEC genomes using antiSMASH. The production of bacteriocin-like compounds was phenotypically validated through agar well (primary screening) and disk diffusion (secondary screening) assays using cell free supernatants (CFS) and partially purified extracts, respectively. Stability of four selected CFS against proteolytic enzymes, temperature and pH was determined while one CFS was analyzed by HRMS and MS/MS to identify potential bacteriocins. Twenty novel bacteriocin biosynthetic gene clusters (BBGC), which were classified into eight (six lantibiotics and two sactipeptides) distinct groups, were discovered in 18 genomes belonging to C. estertheticum (n = 12), C. tagluense (n = 3) and genomospecies2 (n = 3). Primary screening linked six BBGC with narrow antimicrobial activity against closely related clostridia species. All four preselected CFS retained activity after exposure to different proteolytic, temperature and pH conditions. Secondary screening linked BBGC1 and BBGC7 encoding a lantibiotic and sactipeptide, respectively, with activity against Bacillus cereus while lantibiotic-encoding BBGC2 and BBGC3 were linked with activity against B. cereus, Staphylococcus aureus (methicillin-resistant), Escherichia coli and Pseudomonas aeruginosa. MS/MS analysis revealed that C. estertheticum CF004 produces cesin A, a short natural variant of nisin, and HRMS indicated the production of a novel sactipeptide named estercticin A. Therefore, we have shown the CEC, in particular C. estertheticum, is a source of novel and stable bacteriocins that have activities against clinically relevant pathogens.
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Affiliation(s)
- Joseph Wambui
- Vetsuisse Faculty, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
- *Correspondence: Joseph Wambui,
| | - Marc J. A. Stevens
- Vetsuisse Faculty, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| | - Simon Sieber
- Department of Chemistry, University of Zurich, Zurich, Switzerland
| | - Nicole Cernela
- Vetsuisse Faculty, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
| | - Vincent Perreten
- Institute of Veterinary Bacteriology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Roger Stephan
- Vetsuisse Faculty, Institute for Food Safety and Hygiene, University of Zurich, Zurich, Switzerland
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Genome Mining of Pseudomonas Species: Diversity and Evolution of Metabolic and Biosynthetic Potential. Molecules 2021; 26:molecules26247524. [PMID: 34946606 PMCID: PMC8704066 DOI: 10.3390/molecules26247524] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/17/2022] Open
Abstract
Microbial genome sequencing has uncovered a myriad of natural products (NPs) that have yet to be explored. Bacteria in the genus Pseudomonas serve as pathogens, plant growth promoters, and therapeutically, industrially, and environmentally important microorganisms. Though most species of Pseudomonas have a large number of NP biosynthetic gene clusters (BGCs) in their genomes, it is difficult to link many of these BGCs with products under current laboratory conditions. In order to gain new insights into the diversity, distribution, and evolution of these BGCs in Pseudomonas for the discovery of unexplored NPs, we applied several bioinformatic programming approaches to characterize BGCs from Pseudomonas reference genome sequences available in public databases along with phylogenetic and genomic comparison. Our research revealed that most BGCs in the genomes of Pseudomonas species have a high diversity for NPs at the species and subspecies levels and built the correlation of species with BGC taxonomic ranges. These data will pave the way for the algorithmic detection of species- and subspecies-specific pathways for NP development.
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20
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Tabata A, Nagamune H. Diversity of β-hemolysins produced by the human opportunistic streptococci. Microbiol Immunol 2021; 65:512-529. [PMID: 34591320 DOI: 10.1111/1348-0421.12936] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/28/2022]
Abstract
The genus Streptococcus infects a broad range of hosts, including humans. Some species, such as S. pyogenes, S. agalactiae, S. pneumoniae, and S. mutans, are recognized as the major human pathogens, and their pathogenicity toward humans has been investigated. However, many of other streptococcal species have been recognized as opportunistic pathogens in humans, and their clinical importance has been underestimated. In our previous study, the Anginosus group streptococci (AGS) and Mitis group streptococci (MGS) showed clear β-hemolysis on blood agar, and the factors responsible for the hemolysis were homologs of two types of β-hemolysins, cholesterol-dependent cytolysin (CDC) and streptolysin S (SLS). In contrast to the regular β-hemolysins produced by streptococci (typical CDCs and SLSs), genetically, structurally, and functionally atypical β-hemolysins have been observed in AGS and MGS. These atypical β-hemolysins are thought to affect and contribute to the pathogenic potential of opportunistic streptococci mainly inhabiting the human oral cavity. In this review, we introduce the diverse characteristics of β-hemolysin produced by opportunistic streptococci, focusing on the species/strains belonging to AGS and MGS, and discuss their pathogenic potential.
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Affiliation(s)
- Atsushi Tabata
- Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hideaki Nagamune
- Department of Bioengineering, Division of Bioscience and Bioindustry, Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School, Tokushima, Japan
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Pahalagedara ASNW, Jauregui R, Maclean P, Altermann E, Flint S, Palmer J, Brightwell G, Gupta TB. Culture and genome-based analysis of four soil Clostridium isolates reveal their potential for antimicrobial production. BMC Genomics 2021; 22:686. [PMID: 34548019 PMCID: PMC8456703 DOI: 10.1186/s12864-021-08005-2] [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: 05/11/2021] [Accepted: 09/13/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Soil bacteria are a major source of specialized metabolites including antimicrobial compounds. Yet, one of the most diverse genera of bacteria ubiquitously present in soil, Clostridium, has been largely overlooked in bioactive compound discovery. As Clostridium spp. thrive in extreme environments with their metabolic mechanisms adapted to the harsh conditions, they are likely to synthesize molecules with unknown structures, properties, and functions. Therefore, their potential to synthesize small molecules with biological activities should be of great interest in the search for novel antimicrobial compounds. The current study focused on investigating the antimicrobial potential of four soil Clostridium isolates, FS01, FS2.2 FS03, and FS04, using a genome-led approach, validated by culture-based methods. RESULTS Conditioned/spent media from all four Clostridium isolates showed varying levels of antimicrobial activity against indicator microorganism; all four isolates significantly inhibited the growth of Pseudomonas aeruginosa. FS01, FS2.2, and FS04 were active against Bacillus mycoides and FS03 reduced the growth of Bacillus cereus. Phylogenetic analysis together with DNA-DNA hybridization (dDDH), average nucleotide identity (ANI), and functional genome distribution (FGD) analyses confirmed that FS01, FS2.2, and FS04 belong to the species Paraclostridium bifermentans, Clostridium cadaveris, and Clostridium senegalense respectively, while FS03 may represent a novel species of the genus Clostridium. Bioinformatics analysis using antiSMASH 5.0 predicted the presence of eight biosynthetic gene clusters (BGCs) encoding for the synthesis of ribosomally synthesized post-translationally modified peptides (RiPPs) and non-ribosomal peptides (NRPs) in four genomes. All predicted BGCs showed no similarity with any known BGCs suggesting novelty of the molecules from those predicted gene clusters. In addition, the analysis of genomes for putative virulence factors revealed the presence of four putative Clostridium toxin related genes in FS01 and FS2.2 genomes. No genes associated with the main Clostridium toxins were identified in the FS03 and FS04 genomes. CONCLUSIONS The presence of BGCs encoding for uncharacterized RiPPs and NRPSs in the genomes of antagonistic Clostridium spp. isolated from farm soil indicated their potential to produce novel secondary metabolites. This study serves as a basis for the identification and characterization of potent antimicrobials from these soil Clostridium spp. and expands the current knowledge base, encouraging future research into bioactive compound production in members of the genus Clostridium.
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Affiliation(s)
- Amila S N W Pahalagedara
- Food System Integrity team, Hopkirk Research Institute, AgResearch Ltd, Massey University, 4474, Palmerston North, New Zealand
- School of Food and Advanced Technology, Massey University, 4442, Palmerston North, New Zealand
- Data Science team, Grasslands Research Centre, AgResearch Ltd, Palmerston North, New Zealand
| | - Ruy Jauregui
- Data Science team, Grasslands Research Centre, AgResearch Ltd, Palmerston North, New Zealand
- Riddet Institute, Massey University, Palmerston North, New Zealand
| | - Paul Maclean
- Data Science team, Grasslands Research Centre, AgResearch Ltd, Palmerston North, New Zealand
- Riddet Institute, Massey University, Palmerston North, New Zealand
| | - Eric Altermann
- Food System Integrity team, Hopkirk Research Institute, AgResearch Ltd, Massey University, 4474, Palmerston North, New Zealand
- School of Food and Advanced Technology, Massey University, 4442, Palmerston North, New Zealand
- Riddet Institute, Massey University, Palmerston North, New Zealand
| | - Steve Flint
- School of Food and Advanced Technology, Massey University, 4442, Palmerston North, New Zealand
- Data Science team, Grasslands Research Centre, AgResearch Ltd, Palmerston North, New Zealand
| | - Jon Palmer
- School of Food and Advanced Technology, Massey University, 4442, Palmerston North, New Zealand
- Data Science team, Grasslands Research Centre, AgResearch Ltd, Palmerston North, New Zealand
| | - Gale Brightwell
- Food System Integrity team, Hopkirk Research Institute, AgResearch Ltd, Massey University, 4474, Palmerston North, New Zealand
- School of Food and Advanced Technology, Massey University, 4442, Palmerston North, New Zealand
- New Zealand Food Safety Science and Research Centre, Massey University, Palmerston North, New Zealand
| | - Tanushree Barua Gupta
- Food System Integrity team, Hopkirk Research Institute, AgResearch Ltd, Massey University, 4474, Palmerston North, New Zealand.
- School of Food and Advanced Technology, Massey University, 4442, Palmerston North, New Zealand.
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22
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Malit JJL, Wu C, Liu LL, Qian PY. Global Genome Mining Reveals the Distribution of Diverse Thioamidated RiPP Biosynthesis Gene Clusters. Front Microbiol 2021; 12:635389. [PMID: 33995295 PMCID: PMC8120280 DOI: 10.3389/fmicb.2021.635389] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 04/06/2021] [Indexed: 11/13/2022] Open
Abstract
Thioamidated ribosomally synthesized and post-translationally modified peptides (RiPPs) are recently characterized natural products with wide range of potent bioactivities, such as antibiotic, antiproliferative, and cytotoxic activities. These peptides are distinguished by the presence of thioamide bonds in the peptide backbone catalyzed by the YcaO-TfuA protein pair with its genes adjacent to each other. Genome mining has facilitated an in silico approach to identify biosynthesis gene clusters (BGCs) responsible for thioamidated RiPP production. In this work, publicly available genomic data was used to detect and illustrate the diversity of putative BGCs encoding for thioamidated RiPPs. AntiSMASH and RiPPER analysis identified 613 unique TfuA-related gene cluster families (GCFs) and 797 precursor peptide families, even on phyla where the presence of these clusters have not been previously described. Several additional biosynthesis genes are colocalized with the detected BGCs, suggesting an array of possible chemical modifications. This study shows that thioamidated RiPPs occupy a widely unexplored chemical landscape.
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Affiliation(s)
- Jessie James Limlingan Malit
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Chuanhai Wu
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Ling-Li Liu
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory, The Hong Kong University of Science and Technology, Hong Kong, China.,Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, China
| | - Pei-Yuan Qian
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory, The Hong Kong University of Science and Technology, Hong Kong, China
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23
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Fathizadeh H, Saffari M, Esmaeili D, Moniri R, Kafil HS. Bacteriocins: New Potential Therapeutic Candidates in Cancer Therapy. Curr Mol Med 2021; 21:211-220. [PMID: 33109060 DOI: 10.2174/1566524020999200817113730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 11/22/2022]
Abstract
Cancer is one of the most important disorders which is associated with high mortality and high costs of treatment for patients. Despite several efforts, finding, designing and developing, new therapeutic platforms in the treatment of cancer patients are still required. Utilization of microorganisms, particularly bacteria has emerged as new therapeutic approaches in the treatment of various cancers. Increasing data indicated that bacteria could be used in the production of a wide range of anti-cancer agents, including bacteriocins, antibiotics, peptides, enzymes, and toxins. Among these anti-cancer agents, bacteriocins have attractive properties, which make them powerful anti-cancer drugs. Multiple lines evidence indicated that several bacteriocins (i.e., colcins, nisins, pediocins, pyocins, and bovocins) via activation/inhibition different cellular and molecular signaling pathways are able to suppress tumor growth in various stages. Hence, identification and using various bacteriocins could lead to improve and introduce them to clinical practices. Here, we summarized various bacteriocins which could be employed as anti-cancer agents in the treatment of many cancers.
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Affiliation(s)
- Hadis Fathizadeh
- Department of Microbiology and immunology, Kashan University of Medical Sciences, Kashan, Iran
| | - Mahmood Saffari
- Department of Microbiology and immunology, Kashan University of Medical Sciences, Kashan, Iran
| | - Davoud Esmaeili
- Department of Microbiology and Applied Microbiology Research Center, Systems biology and poisonings institute, Baqiyatallah University of Medical sciences, Tehran, Iran
| | - Rezvan Moniri
- Department of Microbiology and immunology, Kashan University of Medical Sciences, Kashan, Iran
| | - Hossein Samadi Kafil
- Department of Bacteriology and Virology, School of Medicine, Tabriz University of Medical Sciences, Iran
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24
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de Sousa BL, Azevedo AC, Oliveira IMF, Bento CBP, Santana MF, Bazzolli DMS, Mantovani HC. PCR screening reveals abundance of bovicin-like bacteriocins among ruminal Streptococcus spp. isolated from beef and dairy cattle. J Appl Microbiol 2021; 131:1695-1709. [PMID: 33714234 DOI: 10.1111/jam.15069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 01/07/2021] [Accepted: 03/09/2021] [Indexed: 11/30/2022]
Abstract
AIMS To investigate the inhibitory activity and the distribution of biosynthetic genes encoding bovicin-like bacteriocins among ruminal Streptococcus isolated from beef and dairy cattle. METHODS AND RESULTS Most isolates were classified as Streptococcus equinus and Streptococcus lutetiensis based on 16S rRNA sequencing. The antimicrobial activity of 150 ruminal streptococci isolated from beef and dairy cattle were tested by deferred inhibition assays and their genetic diversity was characterized by BOX-PCR. The frequency of biosynthetic genes associated with the biosynthesis of bovicin-like bacteriocins (bovicin HC5 and bovicin 255) was investigated by PCR screening. Approximately 33% of the ruminal streptococci isolated from Nellore heifers showed inhibitory activity in vitro with the majority harbouring genes for bacteriocin biosynthesis. In contrast, streptococci from Holstein cows showed limited inhibitory activity and a lower frequency of bacteriocin biosynthetic genes. CONCLUSIONS Streptococcus from the rumen of beef and dairy cattle exhibit remarkable differences in inhibitory activity and distribution of genes associated with the biosynthesis of prototypical bovicins (bovicin HC5 and bovicin 255). SIGNIFICANCE AND IMPACT OF THE STUDY Our findings demonstrate that bovicin HC5 is distributed among ruminal streptococci from different breeds of cattle. The high degree of conservation of the bovicin HC5 structural gene among strains of ruminal streptococci suggests that random genetic drift is not a dominant force in the evolution of this bacteriocin.
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Affiliation(s)
- B L de Sousa
- Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, Brazil.,Departamento de Química, Universidade Federal de Viçosa, Viçosa, Brazil
| | - A C Azevedo
- Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - I M F Oliveira
- Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - C B P Bento
- Departamento de Microbiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Unaí, Brazil
| | - M F Santana
- Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - D M S Bazzolli
- Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - H C Mantovani
- Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, Brazil
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25
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Unno K, Nakagawa H, Kodani S. Heterologous production of new protease inhibitory peptide marinostatin E. Biosci Biotechnol Biochem 2021; 85:97-102. [DOI: 10.1093/bbb/zbaa011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 06/09/2020] [Indexed: 01/30/2023]
Abstract
Abstract
Bicyclic peptides, marinostatins, are protease inhibitors derived from the marine bacterium Algicola sagamiensis. The biosynthetic gene cluster of marinostatin was previously identified, although no heterologous production was reported. In this report, the biosynthetic gene cluster of marinostatin (mstA and mstB) was cloned into the expression vector pET-41a(+). As a result of the coexpression experiment, a new analogous peptide named marinostatin E was successfully produced using Escherichia coli BL21(DE3). The structure of marinostatin E was determined by a combination of chemical treatments and tandem mass spectrometry experiments. Marinostatin E exhibited inhibitory activities against chymotrypsin and subtilisin with an IC50 of 4.0 and 39.6 μm, respectively.
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Affiliation(s)
- Kohta Unno
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Hiroyuki Nakagawa
- Food Research Institute, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
- Advanced Analysis Center, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Shinya Kodani
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
- College of Agriculture, Academic Institute, Shizuoka University, Shizuoka, Japan
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26
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Unno K, Kodani S. Heterologous expression of cryptic biosynthetic gene cluster from Streptomyces prunicolor yields novel bicyclic peptide prunipeptin. Microbiol Res 2020; 244:126669. [PMID: 33360751 DOI: 10.1016/j.micres.2020.126669] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 11/02/2020] [Accepted: 12/06/2020] [Indexed: 11/18/2022]
Abstract
Recently, ω-ester-containing peptides (OEPs) were indicated to be a class of ribosomally synthesized and post-translationally modified peptides. Based on genome mining, new biosynthetic gene cluster of OEPs was found in the genome sequence of actinobacterium Streptomyces prunicolor. The biosynthetic gene cluster contained just two genes including precursor peptide (pruA) and ATP-grasp ligase (pruB) coding genes. Heterologous co-expression of the two genes was accomplished using expression vector pET-41a(+) in Escherichia coli. As a result, new OEP named prunipeptin was produced by this system. By site-directed mutagenesis experiment, a variant peptide prunipeptin 15HW was obtained. The bridging pattern of prunipeptin 15HW was determined by combination of chemical cleavage and MS experiments. Prunipeptin 15HW possessed bicyclic structure with an ester bond and an isopeptide bond. The ATP-grasp ligase PruB was indicated to catalyze the two different intramolecular bonds.
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Affiliation(s)
- Kohta Unno
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Shinya Kodani
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan; College of Agriculture, Academic Institute, Shizuoka University, Shizuoka, Japan.
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27
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Neuwirth T, Letzel AC, Tank C, Ishida K, Cyrulies M, Schmölz L, Lorkowski S, Hertweck C. Induced Production, Synthesis, and Immunomodulatory Action of Clostrisulfone, a Diarylsulfone from Clostridium acetobutylicum. Chemistry 2020; 26:15855-15858. [PMID: 32996646 PMCID: PMC7756337 DOI: 10.1002/chem.202003500] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/29/2020] [Indexed: 01/25/2023]
Abstract
The anaerobe Clostridium acetobutylicum belongs to the most important industrially used bacteria. Whereas genome mining points to a high potential for secondary metabolism in C. acetobutylicum, the functions of most biosynthetic gene clusters are cryptic. We report that the addition of supra‐physiological concentrations of cysteine triggered the formation of a novel natural product, clostrisulfone (1). Its structure was fully elucidated by NMR, MS and the chemical synthesis of a reference compound. Clostrisulfone is the first reported natural product with a diphenylsulfone scaffold. A biomimetic synthesis suggests that pentamethylchromanol‐derived radicals capture sulfur dioxide to form 1. In a cell‐based assay using murine macrophages a biphasic and dose‐dependent regulation of the LPS‐induced release of nitric oxide was observed in the presence of 1.
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Affiliation(s)
- Toni Neuwirth
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Chemistry and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Anne-Catrin Letzel
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Chemistry and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Cedric Tank
- BioPilotPlant, Leibniz Institute for Natural Product Chemistry and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Keishi Ishida
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Chemistry and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Michael Cyrulies
- BioPilotPlant, Leibniz Institute for Natural Product Chemistry and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany
| | - Lisa Schmölz
- Institute of Nutritional Sciences, Friedrich Schiller University Jena, Dornburger Straße 25, 07743, Jena, Germany
| | - Stefan Lorkowski
- Institute of Nutritional Sciences, Friedrich Schiller University Jena, Dornburger Straße 25, 07743, Jena, Germany
| | - Christian Hertweck
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Chemistry and Infection Biology (HKI), Beutenbergstr. 11a, 07745, Jena, Germany.,Faculty of Biological Sciences, Friedrich Schiller University Jena, 07743, Jena, Germany
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28
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Chen Y, Yang Y, Ji X, Zhao R, Li G, Gu Y, Shi A, Jiang W, Zhang Q. The SCIFF-Derived Ranthipeptides Participate in Quorum Sensing in Solventogenic Clostridia. Biotechnol J 2020; 15:e2000136. [PMID: 32713052 DOI: 10.1002/biot.202000136] [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: 02/20/2020] [Revised: 06/25/2020] [Indexed: 12/29/2022]
Abstract
Ranthipeptides, defined as radical non-α thioether-containing peptides, are a newly emerging class of natural products belonging to the ribosomally synthesized and post-translationally modified peptide (RiPP) superfamily. Ranthipeptides are shown to be widespread in the bacterial kingdom, whereas heretofore their biological functions remain completely elusive. In this work, putative ranthipeptides are investigated from two solventogenic clostridia, Clostridium beijerinckii and Clostridium ljungdahlii, which are derived from the so-called six Cys in forty-five residues (SCIFF) family of precursor peptides. A series of analysis show that these two ranthipeptides participate in quorum sensing and controlling cellular metabolism. These results highlight the diverse biological functions of the ever-increasing family of RiPP natural products and showcase the potential to engineer industrially interesting organisms by manipulating their RiPP biosynthetic pathways.
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Affiliation(s)
- Yunliang Chen
- School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, 212013, China.,Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Yunpeng Yang
- Chinese Academy of Sciences (CAS) Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai Institute of Plant Physiology and Ecology, Shanghai, 200032, China.,Institute of Neuroscience, Chinese Academy of Sciences (CAS) Key Laboratory of Primate Neurobiology, CAS Center for Excellence in Brain Science and Intelligence Technology, CAS, Shanghai Institutes for Biological Sciences, Shanghai, 200031, China
| | - Xinjian Ji
- Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Ran Zhao
- Chinese Academy of Sciences (CAS) Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai Institute of Plant Physiology and Ecology, Shanghai, 200032, China
| | - Guoquan Li
- School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Yang Gu
- Chinese Academy of Sciences (CAS) Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai Institute of Plant Physiology and Ecology, Shanghai, 200032, China
| | - Aiping Shi
- School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Weihong Jiang
- Chinese Academy of Sciences (CAS) Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai Institute of Plant Physiology and Ecology, Shanghai, 200032, China
| | - Qi Zhang
- Department of Chemistry, Fudan University, Shanghai, 200433, China
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29
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Fuwa H, Hemmi H, Kaweewan I, Kozaki I, Honda H, Kodani S. Heterologous production of new lasso peptide koreensin based on genome mining. J Antibiot (Tokyo) 2020; 74:42-50. [PMID: 32855516 DOI: 10.1038/s41429-020-00363-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 11/09/2022]
Abstract
Lasso peptides are a class of ribosomally biosynthesized and posttranslationally modified peptides with a knot structure as a common motif. Based on a genome search, a new biosynthetic gene cluster of lasso peptide was found in the genome of the proteobacterium Sphingomonas koreensis. Interestingly, the amino acid sequence of the precursor peptide gene includes two cell adhesion motif sequences (KGD and DGR). Heterologous production of the new lasso peptide was performed using the cryptic biosynthetic gene cluster of S. koreensis. As a result, a new lasso peptide named koreensin was produced by the gene expression system in the host strain Sphingomonas subterranea. The structure of koreensin was determined by NMR and ESI-MS analysis. The three-dimensional structure of koreensin was obtained based on an NOE experiment and the coupling constants. A variant peptide (koreensin-RGD), which had RGD instead of KGD, was produced by heterologous production with site-directed mutagenesis experiment. Koreensin and koreensin-RGD did not show cell adhesion inhibitory activity, although the molecules possessed cell adhesion motifs. The possible presence of a salt bridge between the motifs in koreensin was indicated, and it may prevent the cell adhesion motif from functioning.
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Affiliation(s)
- Hiroki Fuwa
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Hikaru Hemmi
- Food Research Institute, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Issara Kaweewan
- Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan
| | - Ikko Kozaki
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Hiroyuki Honda
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Shinya Kodani
- Graduate School of Integrated Science and Technology, Shizuoka University, Shizuoka, Japan. .,Graduate School of Science and Technology, Shizuoka University, Shizuoka, Japan. .,Academic Institute, Shizuoka University, Shizuoka, Japan.
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30
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Wang B, Cheng H, Qian W, Zhao W, Liang C, Liu C, Cui G, Liu H, Zhang L. Comparative genome analysis and mining of secondary metabolites of Paenibacillus polymyxa. Genes Genet Syst 2020; 95:141-150. [PMID: 32611933 DOI: 10.1266/ggs.19-00053] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Paenibacillus polymyxa is a well-known Gram-positive biocontrol bacterium. It has been reported that many P. polymyxa strains can inhibit bacteria, fungi and other plant pathogens. Paenibacillus polymyxa employs a variety of mechanisms to promote plant growth, so it is necessary to understand the biocontrol ability of bacteria at the genome level. In the present study, thanks to the widespread availability of Paenibacillus genome data and the development of bioinformatics tools, we were able to analyze and mine the genomes of 43 P. polymyxa strains. The strain NCTC4744 was determined not to be P. polymyxa according to digital DNA-DNA hybridization and average nucleotide identity. By analysis of the pan-genome and the core genome, we found that the pan-genome of P. polymyxa was open and that there were 3,192 core genes. In a gene cluster analysis of secondary metabolites, 797 secondary metabolite gene clusters were found, of which 343 are not similar to known clusters and are expected to reveal a large number of new secondary metabolites. We also analyzed the plant growth-promoting genes that were mined and found, surpisingly, that these genes are highly conserved. The results of the present study not only reveal a large number of unknown potential secondary metabolite gene clusters in P. polymyxa, but also suggest that plant growth promotion characteristics are evolutionary adaptations of P. polymyxa to plant-related habitats.
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Affiliation(s)
- Buqing Wang
- Hebei University of Technology.,Institute of Biology, Hebei Academy of Sciences.,Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province
| | - Huicai Cheng
- Institute of Biology, Hebei Academy of Sciences.,Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province
| | - Wenjiang Qian
- Hebei University of Technology.,Institute of Biology, Hebei Academy of Sciences
| | - Wenya Zhao
- Institute of Biology, Hebei Academy of Sciences.,Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province
| | - Cong Liang
- Institute of Biology, Hebei Academy of Sciences.,Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province
| | - Chao Liu
- Hebei University of Technology.,Institute of Biology, Hebei Academy of Sciences
| | - Guanhui Cui
- Institute of Biology, Hebei Academy of Sciences.,Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province
| | - Hongwei Liu
- Institute of Biology, Hebei Academy of Sciences.,Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province
| | - Liping Zhang
- Hebei University of Technology.,Institute of Biology, Hebei Academy of Sciences.,Main Crops Disease of Microbial Control Engineering Technology Research Center in Hebei Province
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31
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Draft Genome Sequence of Clostridium cochlearium Strain AGROS13, Isolated from a Sheep Dairy Farm in New Zealand. Microbiol Resour Announc 2020; 9:9/26/e00593-20. [PMID: 32586862 PMCID: PMC7317113 DOI: 10.1128/mra.00593-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report the draft genome sequence of a new Clostridium cochlearium strain, AGROS13, which was isolated from a sheep dairy farm environment in New Zealand. The genome is 2.7 Mbp, with a GC content of 28.2%. The genome sequence was found to be closely related to that of Clostridium cochlearium ATCC 17787. The new strain harbors a biosynthetic gene cluster coding for an unknown sactipeptide.
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32
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Walker MC, Eslami SM, Hetrick KJ, Ackenhusen SE, Mitchell DA, van der Donk WA. Precursor peptide-targeted mining of more than one hundred thousand genomes expands the lanthipeptide natural product family. BMC Genomics 2020; 21:387. [PMID: 32493223 PMCID: PMC7268733 DOI: 10.1186/s12864-020-06785-7] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 05/18/2020] [Indexed: 02/08/2023] Open
Abstract
Background Lanthipeptides belong to the ribosomally synthesized and post-translationally modified peptide group of natural products and have a variety of biological activities ranging from antibiotics to antinociceptives. These peptides are cyclized through thioether crosslinks and can bear other secondary post-translational modifications. While lanthipeptide biosynthetic gene clusters can be identified by the presence of genes encoding characteristic enzymes involved in the post-translational modification process, locating the precursor peptides encoded within these clusters is challenging due to their short length and high sequence variability, which limits the high-throughput exploration of lanthipeptide biosynthesis. To address this challenge, we enhanced the predictive capabilities of Rapid ORF Description & Evaluation Online (RODEO) to identify members of all four known classes of lanthipeptides. Results Using RODEO, we mined over 100,000 bacterial and archaeal genomes in the RefSeq database. We identified nearly 8500 lanthipeptide precursor peptides. These precursor peptides were identified in a broad range of bacterial phyla as well as the Euryarchaeota phylum of archaea. Bacteroidetes were found to encode a large number of these biosynthetic gene clusters, despite making up a relatively small portion of the genomes in this dataset. A number of these precursor peptides are similar to those of previously characterized lanthipeptides, but even more were not, including potential antibiotics. One such new antimicrobial lanthipeptide was purified and characterized. Additionally, examination of the biosynthetic gene clusters revealed that enzymes installing secondary post-translational modifications are more widespread than initially thought. Conclusion Lanthipeptide biosynthetic gene clusters are more widely distributed and the precursor peptides encoded within these clusters are more diverse than previously appreciated, demonstrating that the lanthipeptide sequence-function space remains largely underexplored.
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Affiliation(s)
- Mark C Walker
- Department of Chemistry and Chemical Biology, University of New Mexico, 346 Clark Hall, 300 Terrace St. NE, Albuquerque, NM, 87131, USA. .,Department of Chemistry, University of Illinois at Urbana-Champaign, Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA.
| | - Sara M Eslami
- Department of Chemistry, University of Illinois at Urbana-Champaign, Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - Kenton J Hetrick
- Department of Chemistry, University of Illinois at Urbana-Champaign, Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - Sarah E Ackenhusen
- Department of Chemistry, University of Illinois at Urbana-Champaign, Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - Douglas A Mitchell
- Department of Chemistry, University of Illinois at Urbana-Champaign, Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA.,Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA.,Department of Microbiology, University of Illinois at Urbana-Champaign, 601 S. Goodwin Ave, Urbana, IL, 61801, USA
| | - Wilfred A van der Donk
- Department of Chemistry, University of Illinois at Urbana-Champaign, Roger Adams Laboratory, 600 S. Mathews Ave, Urbana, IL, 61801, USA.,Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL, 61801, USA.,Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA
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33
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Bösch NM, Borsa M, Greczmiel U, Morinaka BI, Gugger M, Oxenius A, Vagstad AL, Piel J. Landornamides: Antiviral Ornithine‐Containing Ribosomal Peptides Discovered through Genome Mining. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916321] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Nina M. Bösch
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Mariana Borsa
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Ute Greczmiel
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Brandon I. Morinaka
- Department of Pharmacy National University of Singapore 18 Science Drive 4 Singapore 117543 Singapore
| | - Muriel Gugger
- Institut Pasteur Collection des Cyanobactéries Département de Microbiologie 75015 Paris France
| | - Annette Oxenius
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Anna L. Vagstad
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Jörn Piel
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
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Bösch NM, Borsa M, Greczmiel U, Morinaka BI, Gugger M, Oxenius A, Vagstad AL, Piel J. Landornamides: Antiviral Ornithine‐Containing Ribosomal Peptides Discovered through Genome Mining. Angew Chem Int Ed Engl 2020; 59:11763-11768. [DOI: 10.1002/anie.201916321] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/11/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Nina M. Bösch
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Mariana Borsa
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Ute Greczmiel
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Brandon I. Morinaka
- Department of Pharmacy National University of Singapore 18 Science Drive 4 Singapore 117543 Singapore
| | - Muriel Gugger
- Institut Pasteur Collection des Cyanobactéries Département de Microbiologie 75015 Paris France
| | - Annette Oxenius
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Anna L. Vagstad
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
| | - Jörn Piel
- Institute of Microbiology Eidgenössische Technische Hochschule (ETH) Zurich Vladimir-Prelog-Weg 4 8093 Zurich Switzerland
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Unno K, Kaweewan I, Nakagawa H, Kodani S. Heterologous expression of a cryptic gene cluster from Grimontia marina affords a novel tricyclic peptide grimoviridin. Appl Microbiol Biotechnol 2020; 104:5293-5302. [DOI: 10.1007/s00253-020-10605-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/01/2020] [Accepted: 04/01/2020] [Indexed: 10/24/2022]
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New perspectives on the treatment of mycobacterial infections using antibiotics. Appl Microbiol Biotechnol 2020; 104:4197-4209. [PMID: 32185432 DOI: 10.1007/s00253-020-10513-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/22/2020] [Accepted: 02/28/2020] [Indexed: 12/13/2022]
Abstract
More than 100 years have passed since the discovery of Mycobacterium tuberculosis, in 1882, as the pathogen that causes tuberculosis (TB). However, globally, TB is still one of the leading causes of death by infectious diseases. In 2018, approximately 10.0 million people were diagnosed with TB owing to the development of advanced strategies by M. tuberculosis to resist antibiotics, including the development of a dormant state. The World Health Organization (WHO) and the Sustainable Development Goals (SDGs) are dedicated to ending TB by 2030. However, the development of strategies to discover new TB drugs and new therapies is crucial for the achievement of this goal. Unfortunately, the rapid occurrence of multidrug-resistant strains of M. tuberculosis has worsened the current situation, thereby warranting prioritized discovery of new anti-TB drugs and the development of new treatment regimens in academia and the pharmaceutical industry. In this mini review, we provide a brief overview of the current research and development pipeline for new anti-TB drugs and present our perspective of TB drug innovation. The data presented herein may enable the introduction of more effective medicines and therapeutic regimens into the market.Key Points• The Updated Global New TB Drug Pipelines are briefly summarized.• Novel strategies for the discovery of new TB drugs, including novel sources, bioinformatics, and synthetic biology strategies, are discussed.• New therapeutic options, including living therapeutics and phage therapy, are proposed.
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Pahalagedara ASNW, Flint S, Palmer J, Brightwell G, Gupta TB. Antimicrobial production by strictly anaerobic Clostridium spp. Int J Antimicrob Agents 2020; 55:105910. [PMID: 31991218 DOI: 10.1016/j.ijantimicag.2020.105910] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 01/13/2020] [Accepted: 01/18/2020] [Indexed: 01/04/2023]
Abstract
Antimicrobial resistance continues to rise on a global scale, affecting the environment, humans, animals and food systems. Use of natural antimicrobials has been favoured over synthetic molecules in food preservation owing to concerns over the adverse health effects of synthetic chemicals. The continuing need for novel natural antimicrobial compounds has spurred research to investigate natural sources, such as bacteria, for antimicrobials. The antimicrobial-producing potential of bacteria has been investigated in numerous studies. However, the discovery of antimicrobials has been biased towards aerobes and facultative anaerobes, and strict anaerobes such as Clostridium spp. have been largely neglected. In recent years, genomic studies have indicated the genetic potential of strict anaerobes to produce putative bioactive molecules and this has encouraged the exploration of Clostridium spp. for their antimicrobial production. So far, only a limited number of antimicrobial compounds have been isolated, identified and characterised from the genus Clostridium. This review discusses our current knowledge and understanding of clostridial antimicrobial compounds as well as recent genome mining studies of Clostridium spp. focused at identification of putative gene clusters encoding bacterial secondary metabolite groups and peptides reported to possess antimicrobial properties. Furthermore, opportunities and challenges in the identification of antimicrobials from Clostridium spp. using genomic-guided approaches are discussed. The limited studies conducted so far have identified the genus Clostridium as a viable source of antimicrobial compounds for future investigations.
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Affiliation(s)
- Amila Srilal Nawarathna Weligala Pahalagedara
- Food Assurance Team, AgResearch Ltd., Hopkirk Research Institute, Massey University, Palmerston North, 4474, New Zealand; School of Food and Advanced Technology, Massey University, Palmerston North, 4442, New Zealand
| | - Steve Flint
- School of Food and Advanced Technology, Massey University, Palmerston North, 4442, New Zealand
| | - Jon Palmer
- School of Food and Advanced Technology, Massey University, Palmerston North, 4442, New Zealand
| | - Gale Brightwell
- Food Assurance Team, AgResearch Ltd., Hopkirk Research Institute, Massey University, Palmerston North, 4474, New Zealand
| | - Tanushree Barua Gupta
- Food Assurance Team, AgResearch Ltd., Hopkirk Research Institute, Massey University, Palmerston North, 4474, New Zealand.
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Huo L, Zhao X, Acedo JZ, Estrada P, Nair SK, van der Donk WA. Characterization of a Dehydratase and Methyltransferase in the Biosynthesis of Ribosomally Synthesized and Post-translationally Modified Peptides in Lachnospiraceae. Chembiochem 2020; 21:190-199. [PMID: 31532570 PMCID: PMC6980331 DOI: 10.1002/cbic.201900483] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Indexed: 12/15/2022]
Abstract
As a result of the exponential increase in genomic data, discovery of novel ribosomally synthesized and post-translationally modified peptide natural products (RiPPs) has progressed rapidly in the past decade. The lanthipeptides are a major subset of RiPPs. Through genome mining we identified a novel lanthipeptide biosynthetic gene cluster (lah) from Lachnospiraceae bacterium C6A11, an anaerobic bacterium that is a member of the human microbiota and which is implicated in the development of host disease states such as type 2 diabetes and resistance to Clostridium difficile colonization. The lah cluster encodes at least seven putative precursor peptides and multiple post-translational modification (PTM) enzymes. Two unusual class II lanthipeptide synthetases LahM1/M2 and a substrate-tolerant S-adenosyl-l-methionine (SAM)-dependent methyltransferase LahSB are biochemically characterized in this study. We also present the crystal structure of LahSB in complex with product S-adenosylhomocysteine. This study sets the stage for further exploration of the final products of the lah pathway as well as their potential physiological functions in human/animal gut microbiota.
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Affiliation(s)
- Liujie Huo
- Department of Chemistry and Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
- State Key Laboratory for Microbial Technology (SKLMT), Institute of Microbial Technology, Helmholtz International Lab for Anti-Infectives, Shandong University, Qingdao, 266237, P. R. China
| | - Xiling Zhao
- Department of Chemistry and Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Jeella Z Acedo
- Department of Chemistry and Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Paola Estrada
- Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Satish K Nair
- Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Wilfred A van der Donk
- Department of Chemistry and Howard Hughes Medical Institute, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
- Department of Biochemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
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Baquero F, Lanza VF, Baquero MR, Del Campo R, Bravo-Vázquez DA. Microcins in Enterobacteriaceae: Peptide Antimicrobials in the Eco-Active Intestinal Chemosphere. Front Microbiol 2019; 10:2261. [PMID: 31649628 PMCID: PMC6795089 DOI: 10.3389/fmicb.2019.02261] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/17/2019] [Indexed: 12/31/2022] Open
Abstract
Microcins are low-molecular-weight, ribosomally produced, highly stable, bacterial-inhibitory molecules involved in competitive, and amensalistic interactions between Enterobacteriaceae in the intestine. These interactions take place in a highly complex chemical landscape, the intestinal eco-active chemosphere, composed of chemical substances that positively or negatively influence bacterial growth, including those originated from nutrient uptake, and those produced by the action of the human or animal host and the intestinal microbiome. The contribution of bacteria results from their effect on the host generated molecules, on food and digested food, and organic substances from microbial origin, including from bacterial degradation. Here, we comprehensively review the main chemical substances present in the human intestinal chemosphere, particularly of those having inhibitory effects on microorganisms. With this background, and focusing on Enterobacteriaceae, the most relevant human pathogens from the intestinal microbiota, the microcin’s history and classification, mechanisms of action, and mechanisms involved in microcin’s immunity (in microcin producers) and resistance (non-producers) are reviewed. Products from the chemosphere likely modulate the ecological effects of microcin activity. Several cross-resistance mechanisms are shared by microcins, colicins, bacteriophages, and some conventional antibiotics, which are expected to produce cross-effects. Double-microcin-producing strains (such as microcins MccM and MccH47) have been successfully used for decades in the control of pathogenic gut organisms. Microcins are associated with successful gut colonization, facilitating translocation and invasion, leading to bacteremia, and urinary tract infections. In fact, Escherichia coli strains from the more invasive phylogroups (e.g., B2) are frequently microcinogenic. A publicly accessible APD3 database http://aps.unmc.edu/AP/ shows particular genes encoding microcins in 34.1% of E. coli strains (mostly MccV, MccM, MccH47, and MccI47), and much less in Shigella and Salmonella (<2%). Some 4.65% of Klebsiella pneumoniae are microcinogenic (mostly with MccE492), and even less in Enterobacter or Citrobacter (mostly MccS). The high frequency and variety of microcins in some Enterobacteriaceae indicate key ecological functions, a notion supported by their dominance in the intestinal microbiota of biosynthetic gene clusters involved in the synthesis of post-translationally modified peptide microcins.
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Affiliation(s)
- Fernando Baquero
- Department of Microbiology, Ramón y Cajal University Hospital, Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Val F Lanza
- Bioinformatics Unit, Ramón y Cajal University Hospital, Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Maria-Rosario Baquero
- Department of Microbiology, Alfonso X El Sabio University, Villanueva de la Cañada, Spain
| | - Rosa Del Campo
- Department of Microbiology, Ramón y Cajal University Hospital, Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
| | - Daniel A Bravo-Vázquez
- Department of Microbiology, Alfonso X El Sabio University, Villanueva de la Cañada, Spain
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Structure of ribosome-bound azole-modified peptide phazolicin rationalizes its species-specific mode of bacterial translation inhibition. Nat Commun 2019; 10:4563. [PMID: 31594941 PMCID: PMC6783444 DOI: 10.1038/s41467-019-12589-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 09/09/2019] [Indexed: 02/04/2023] Open
Abstract
Ribosome-synthesized post-translationally modified peptides (RiPPs) represent a rapidly expanding class of natural products with various biological activities. Linear azol(in)e-containing peptides (LAPs) comprise a subclass of RiPPs that display outstanding diversity of mechanisms of action while sharing common structural features. Here, we report the discovery of a new LAP biosynthetic gene cluster in the genome of Rhizobium Pop5, which encodes the precursor peptide and modification machinery of phazolicin (PHZ) – an extensively modified peptide exhibiting narrow-spectrum antibacterial activity against some symbiotic bacteria of leguminous plants. The cryo-EM structure of the Escherichia coli 70S-PHZ complex reveals that the drug interacts with the 23S rRNA and uL4/uL22 proteins and obstructs ribosomal exit tunnel in a way that is distinct from other compounds. We show that the uL4 loop sequence determines the species-specificity of antibiotic action. PHZ expands the known diversity of LAPs and may be used in the future as biocontrol agent for agricultural needs. The authors report the identification of phazolicin (PHZ) - a prokaryotic translation inhibitory peptide - and its structure in complex with the E. coli ribosome, delineating PHZ’s mode of action and suggesting a basis for its bacterial species-specific activity.
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An anaerobic bacterium host system for heterologous expression of natural product biosynthetic gene clusters. Nat Commun 2019; 10:3665. [PMID: 31413323 PMCID: PMC6694145 DOI: 10.1038/s41467-019-11673-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 07/11/2019] [Indexed: 02/06/2023] Open
Abstract
Anaerobic bacteria represent an overlooked rich source of biological and chemical diversity. Due to the challenge of cultivation and genetic intractability, assessing the capability of their biosynthetic gene clusters (BGCs) for secondary metabolite production requires an efficient heterologous expression system. However, this kind of host system is still unavailable. Here, we use the facultative anaerobe Streptococcus mutans UA159 as a heterologous host for the expression of BGCs from anaerobic bacteria. A natural competence based large DNA fragment cloning (NabLC) technique was developed, which can move DNA fragments up to 40-kb directly and integrate a 73.7-kb BGC to the genome of S. mutans UA159 via three rounds of NabLC cloning. Using this system, we identify an anti-infiltration compound, mutanocyclin, from undefined BGCs from human oral bacteria. We anticipate this host system will be useful for heterologous expression of BGCs from anaerobic bacteria. Anaerobic bacteria represent a rich source of biological and chemical diversity but are difficult to cultivate and there is a lack of heterologous expression systems. Here the authors develop an expression system based on S. mutans UA159 for biosynthetic gene clusters from anaerobic bacteria.
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Takuma M, Kuroha M, Nagano Y, Kaweewan I, Hemmi H, Oyoshi T, Kodani S. Heterologous production of coryneazolicin in Escherichia coli. J Antibiot (Tokyo) 2019; 72:800-806. [PMID: 31366953 DOI: 10.1038/s41429-019-0212-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 06/04/2019] [Accepted: 06/21/2019] [Indexed: 11/09/2022]
Abstract
Coryneazolicin is a plantazolicin family peptide, belonging to linear azole-containing peptides (LAPs). Although coryneazolicin was previously synthesized by in vitro experiments, its biological activity has not been evaluated. In this report, the heterologous production of coryneazolicin was accomplished to obtain enough coryneazolicin for biological activity tests. The structure of coryneazolicin was confirmed by ESI-MS and NMR analyses. The biological activity tests indicated that coryneazolicin possessed potent antibacterial activity and cytotoxicity. Although antibacterial activity of plantazolicin was previously reported, cytotoxicity was newly found in coryneazolicin among plantazolicin type peptides. In addition, we revealed that coryneazolicin induced apoptosis on HCT116 and HOS cancer cell lines.
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Affiliation(s)
- Momoko Takuma
- Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Mai Kuroha
- Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Yuki Nagano
- Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Issara Kaweewan
- Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Hikaru Hemmi
- Food Research Institute, NARO, 2-1-12 Kannondai, Tsukuba, Ibaraki, 305-8642, Japan
| | - Takanori Oyoshi
- Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.,Academic Institute, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Shinya Kodani
- Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan. .,Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan. .,Academic Institute, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
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Ellegaard KM, Brochet S, Bonilla‐Rosso G, Emery O, Glover N, Hadadi N, Jaron KS, Meer JR, Robinson‐Rechavi M, Sentchilo V, Tagini F, Engel P. Genomic changes underlying host specialization in the bee gut symbiont
Lactobacillus
Firm5. Mol Ecol 2019; 28:2224-2237. [DOI: 10.1111/mec.15075] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/21/2019] [Accepted: 03/04/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Kirsten M. Ellegaard
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
| | - Silvia Brochet
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
| | - German Bonilla‐Rosso
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
| | - Olivier Emery
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
| | - Natasha Glover
- Department of Ecology and Evolution University of Lausanne Lausanne Switzerland
| | - Noushin Hadadi
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
| | - Kamil S. Jaron
- Department of Ecology and Evolution University of Lausanne Lausanne Switzerland
- Swiss Institute of Bioinformatics Lausanne Switzerland
| | - Jan R. Meer
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
| | - Marc Robinson‐Rechavi
- Department of Ecology and Evolution University of Lausanne Lausanne Switzerland
- Swiss Institute of Bioinformatics Lausanne Switzerland
| | - Vladimir Sentchilo
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
| | - Florian Tagini
- Institute of Microbiology, Department of Laboratory Medicine University of Lausanne & Lausanne University Hospital Lausanne Switzerland
| | - Philipp Engel
- Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
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Hudson GA, Burkhart BJ, DiCaprio AJ, Schwalen CJ, Kille B, Pogorelov TV, Mitchell DA. Bioinformatic Mapping of Radical S-Adenosylmethionine-Dependent Ribosomally Synthesized and Post-Translationally Modified Peptides Identifies New Cα, Cβ, and Cγ-Linked Thioether-Containing Peptides. J Am Chem Soc 2019; 141:8228-8238. [PMID: 31059252 DOI: 10.1021/jacs.9b01519] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recently developed bioinformatic tools have bolstered the discovery of ribosomally synthesized and post-translationally modified peptides (RiPPs). Using an improved version of Rapid ORF Description and Evaluation Online (RODEO 2.0), a biosynthetic gene cluster mining algorithm, we bioinformatically mapped the sactipeptide RiPP class via the radical S-adenosylmethionine (SAM) enzymes that form the characteristic sactionine (sulfur-to-α carbon) cross-links between cysteine and acceptor residues. Hundreds of new sactipeptide biosynthetic gene clusters were uncovered, and a novel sactipeptide "huazacin" with growth-suppressive activity against Listeria monocytogenes was characterized. Bioinformatic analysis further suggested that a group of sactipeptide-like peptides heretofore referred to as six cysteines in forty-five residues (SCIFFs) might not be sactipeptides as previously thought. Indeed, the bioinformatically identified SCIFF peptide "freyrasin" was demonstrated to contain six thioethers linking the β carbons of six aspartate residues. Another SCIFF, thermocellin, was shown to contain a thioether cross-linked to the γ carbon of threonine. SCIFFs feature a different paradigm of non-α carbon thioether linkages, and they are exclusively formed by radical SAM enzymes, as opposed to the polar chemistry employed during lanthipeptide biosynthesis. Therefore, we propose the renaming of the SCIFF family as radical non-α thioether peptides (ranthipeptides) to better distinguish them from the sactipeptide and lanthipeptide RiPP classes.
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45
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Liu L, Chan S, Mo T, Ding W, Yu S, Zhang Q, Yuan S. Movements of the Substrate-Binding Clamp of Cypemycin Decarboxylase CypD. J Chem Inf Model 2019; 59:2924-2929. [DOI: 10.1021/acs.jcim.9b00156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Lei Liu
- College of Life Science & Biotechnology, Mianyang Normal University, Mianyang 621000, P. R. China
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Stephen Chan
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Tianlu Mo
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Wei Ding
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Shaoning Yu
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Qi Zhang
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Shuguang Yuan
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Laboratory of Physical Chemistry of Polymers and Membranes, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH B3 495 (Bâtiment CH) Station 6, Lausanne CH-1015, Switzerland
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Zheng Y, Saitou A, Wang CM, Toyoda A, Minakuchi Y, Sekiguchi Y, Ueda K, Takano H, Sakai Y, Abe K, Yokota A, Yabe S. Genome Features and Secondary Metabolites Biosynthetic Potential of the Class Ktedonobacteria. Front Microbiol 2019; 10:893. [PMID: 31080444 PMCID: PMC6497799 DOI: 10.3389/fmicb.2019.00893] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 04/08/2019] [Indexed: 12/30/2022] Open
Abstract
The prevalence of antibiotic resistance and the decrease in novel antibiotic discovery in recent years necessitates the identification of potentially novel microbial resources to produce natural products. Ktedonobacteria, a class of deeply branched bacterial lineage in the ancient phylum Chloroflexi, are ubiquitous in terrestrial environments and characterized by their large genome size and complex life cycle. These characteristics indicate Ktedonobacteria as a potential active producer of bioactive compounds. In this study, we observed the existence of a putative "megaplasmid," multiple copies of ribosomal RNA operons, and high ratio of hypothetical proteins with unknown functions in the class Ktedonobacteria. Furthermore, a total of 104 antiSMASH-predicted putative biosynthetic gene clusters (BGCs) for secondary metabolites with high novelty and diversity were identified in nine Ktedonobacteria genomes. Our investigation of domain composition and organization of the non-ribosomal peptide synthetase and polyketide synthase BGCs further supports the concept that class Ktedonobacteria may produce compounds structurally different from known natural products. Furthermore, screening of bioactive compounds from representative Ktedonobacteria strains resulted in the identification of broad antimicrobial activities against both Gram-positive and Gram-negative tested bacterial strains. Based on these findings, we propose the ancient, ubiquitous, and spore-forming Ktedonobacteria as a versatile and promising microbial resource for natural product discovery.
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Affiliation(s)
- Yu Zheng
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Ayana Saitou
- Faculty of Agriculture, Tohoku University, Sendai, Japan
| | - Chiung-Mei Wang
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Atsushi Toyoda
- Comparative Genomics Laboratory, National Institute of Genetics, Mishima, Japan
| | - Yohei Minakuchi
- Comparative Genomics Laboratory, National Institute of Genetics, Mishima, Japan
| | - Yuji Sekiguchi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Kenji Ueda
- Life Science Research Center, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Hideaki Takano
- Life Science Research Center, College of Bioresource Sciences, Nihon University, Fujisawa, Japan
| | - Yasuteru Sakai
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Keietsu Abe
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Akira Yokota
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Shuhei Yabe
- Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
- Hazaka Plant Research Center, Kennan Eisei Kogyo Co., Ltd., Miyagi, Japan
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Abstract
Covering: up to the end of 2017 The human body is composed of an equal number of human and microbial cells. While the microbial community inhabiting the human gastrointestinal tract plays an essential role in host health, these organisms have also been connected to various diseases. Yet, the gut microbial functions that modulate host biology are not well established. In this review, we describe metabolic functions of the human gut microbiota that involve metalloenzymes. These activities enable gut microbial colonization, mediate interactions with the host, and impact human health and disease. We highlight cases in which enzyme characterization has advanced our understanding of the gut microbiota and examples that illustrate the diverse ways in which metalloenzymes facilitate both essential and unique functions of this community. Finally, we analyze Human Microbiome Project sequencing datasets to assess the distribution of a prominent family of metalloenzymes in human-associated microbial communities, guiding future enzyme characterization efforts.
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Zhu S, Su Y, Shams S, Feng Y, Tong Y, Zheng G. Lassomycin and lariatin lasso peptides as suitable antibiotics for combating mycobacterial infections: current state of biosynthesis and perspectives for production. Appl Microbiol Biotechnol 2019; 103:3931-3940. [PMID: 30915503 DOI: 10.1007/s00253-019-09771-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/12/2019] [Accepted: 03/12/2019] [Indexed: 11/30/2022]
Abstract
Lasso peptides are ribosomally synthesized and post-translationally modified natural products with a characteristic slipknot-like structure, which confers these peptides remarkable stability and diverse pharmacologically relevant bioactivities. Among all the reported lasso peptides, lassomycin and lariatins are unique lasso peptides that exhibit noticeable anti-tuberculosis (TB) activity. Due to the unique threaded structure and the unusual bactericidal mechanism toward Mycobacterium tuberculosis, these peptides have drawn considerable interest, not only in the field of total synthesis but also in several other fields including biosynthesis, bioengineering, and structure-activity studies. During the past few years, significant progress has been made in understanding the biosynthetic mechanism of these intriguing compounds, which has provided a solid foundation for future work. This review highlights recent achievements in the discovery, structure elucidation, biological activity, and the unique anti-TB mechanism of lasso peptides. Moreover, the discovery of their biosynthetic pathway has laid the foundation for combinatorial biosynthesis of their analogs, which provides new perspectives for the production of novel anti-TB lasso peptides.
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Affiliation(s)
- Shaozhou Zhu
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
| | - Yu Su
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Saira Shams
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yue Feng
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yigang Tong
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Guojun Zheng
- State Key Laboratory of Chemical Resources Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
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Nahurira R, Wang J, Yan Y, Jia Y, Fan S, Khokhar I, Eltoukhy A. In silico genome analysis reveals the metabolic versatility and biotechnology potential of a halotorelant phthalic acid esters degrading Gordonia alkanivorans strain YC-RL2. AMB Express 2019; 9:21. [PMID: 30715639 PMCID: PMC6362181 DOI: 10.1186/s13568-019-0733-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 01/03/2019] [Indexed: 12/29/2022] Open
Abstract
Members of genus Gordonia are known to degrade various xenobitics and produce secondary metabolites. The genome of a halotorelant phthalic acid ester (PAEs) degrading actinobacterium Gordonia alkanivorans strain YC-RL2 was sequenced using Biosciences RS II platform and Single Molecular Real-Time (SMRT) technology. The reads were assembled de novo by hierarchical genome assembly process (HGAP) algorithm version 2. Genes were annotated by NCBI Prokaryotic Genome Annotation Pipeline. The generated genome sequence was 4,979,656 bp with an average G+C content of 67.45%. Calculation of ANI confirmed previous classification that strain YC-RL2 is G. alkanivorans. The sequences were searched against KEGG and COG databases; 3132 CDSs were assigned to COG families and 1808 CDSs were predicted to be involved in 111 pathways. 95 of the KEGG annotated genes were predicted to be involved in the degradation of xenobiotics. A phthalate degradation operon could not be identified in the genome indicating that strain YC-RL2 possesses a novel way of phthalate degradation. A total of 203 and 22 CDSs were annotated as esterase/hydrolase and dioxygenase genes respectively. A total of 53 biosynthetic gene clusters (BGCs) were predicted by antiSMASH (antibiotics & Secondary Metabolite Analysis Shell) bacterial version 4.0. The genome also contained putative genes for heavy metal metabolism. The strain could tolerate 1 mM of Cd2+, Co2+, Cu2+, Ni2+, Zn2+, Mn2+ and Pb2+ ions. These results show that strain YC-RL2 has a great potential to degrade various xenobiotics in different environments and will provide a rich genetic resource for further biotechnological and remediation studies.
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Affiliation(s)
- Ruth Nahurira
- Biological Laboratory, Department of Biology, Graduate School of Chinese Academy of Agricultural Sciences, Beijing, People’s Republic of China
| | - Junhuan Wang
- Biological Laboratory, Department of Biology, Graduate School of Chinese Academy of Agricultural Sciences, Beijing, People’s Republic of China
| | - Yanchun Yan
- Biological Laboratory, Department of Biology, Graduate School of Chinese Academy of Agricultural Sciences, Beijing, People’s Republic of China
| | - Yang Jia
- Biological Laboratory, Department of Biology, Graduate School of Chinese Academy of Agricultural Sciences, Beijing, People’s Republic of China
| | - Shuanghu Fan
- Biological Laboratory, Department of Biology, Graduate School of Chinese Academy of Agricultural Sciences, Beijing, People’s Republic of China
| | - Ibatsam Khokhar
- Biological Laboratory, Department of Biology, Graduate School of Chinese Academy of Agricultural Sciences, Beijing, People’s Republic of China
| | - Adel Eltoukhy
- Biological Laboratory, Department of Biology, Graduate School of Chinese Academy of Agricultural Sciences, Beijing, People’s Republic of China
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Discovery and characterization of a novel C-terminal peptide carboxyl methyltransferase in a lassomycin-like lasso peptide biosynthetic pathway. Appl Microbiol Biotechnol 2019; 103:2649-2664. [DOI: 10.1007/s00253-019-09645-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 01/02/2019] [Accepted: 01/10/2019] [Indexed: 12/28/2022]
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