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Lewis RA, Devi J, Green K, Li J, Hopkins A, Hayles J, Nurse P, Errington J, Allenby NEE. Screening and Purification of Natural Products from Actinomycetes that Induce a "Rounded" Morphological Phenotype in Fission Yeast. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:431-445. [PMID: 33881756 PMCID: PMC8275771 DOI: 10.1007/s13659-021-00304-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 04/06/2021] [Indexed: 06/12/2023]
Abstract
This study was designed to identify and investigate bioactive natural product compounds that alter the cellular shape of the fission yeast Schizosaccharomyces pombe and induce a "rounded" or "small" cellular morphological phenotype. Bioassays using a range of antifungal agents against a multidrug-sensitive fission yeast strain, SAK950 showed that many induced a "rounded" phenotype. We then investigated whether 46 of the actinomycete strains identified in our previous study as inducing a similar phenotype produced antifungal agents of similar classes. We show that five of the strains produced streptothricin and that 26 strains produced polyenes, including fungichromin, filipin and candicidin, the last of which was produced by 24 strains. A taxonomic study of the strains indicated that the majority of the candicidin only producers were Streptomyces hydrogenans and S. albidoflavus whilst those that additionally produced streptothricin were related to S. enissocaesilis. A follow-up study to investigate the natural products made by related strains indicated that they followed a similar pattern. The identification of several compounds from the actinomycete strains similar to the antifungal agents initially tested confirm the validity of an approach using the S. pombe morphological phenotype and actinomycete taxonomy as a predictive tool for natural product identification.
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Affiliation(s)
- Richard Alexander Lewis
- Demuris Ltd, The Biosphere, Draymans Way, Newcastle Helix, Newcastle upon Tyne, NE4 5BX, UK.
| | - Jenileima Devi
- Demuris Ltd, The Biosphere, Draymans Way, Newcastle Helix, Newcastle upon Tyne, NE4 5BX, UK
| | - Katherine Green
- Demuris Ltd, The Biosphere, Draymans Way, Newcastle Helix, Newcastle upon Tyne, NE4 5BX, UK
| | - Juanjuan Li
- University of Southampton, University Road, Southampton, SO17 1BJ, UK
| | - Adam Hopkins
- Demuris Ltd, The Biosphere, Draymans Way, Newcastle Helix, Newcastle upon Tyne, NE4 5BX, UK
| | - Jacqueline Hayles
- Cell Cycle Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Paul Nurse
- Cell Cycle Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Jeff Errington
- Demuris Ltd, The Biosphere, Draymans Way, Newcastle Helix, Newcastle upon Tyne, NE4 5BX, UK
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Suárez-Moreno ZR, Vinchira-Villarraga DM, Vergara-Morales DI, Castellanos L, Ramos FA, Guarnaccia C, Degrassi G, Venturi V, Moreno-Sarmiento N. Plant-Growth Promotion and Biocontrol Properties of Three Streptomyces spp. Isolates to Control Bacterial Rice Pathogens. Front Microbiol 2019; 10:290. [PMID: 30858835 PMCID: PMC6398372 DOI: 10.3389/fmicb.2019.00290] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 02/04/2019] [Indexed: 11/23/2022] Open
Abstract
Bacterial Panicle Blight caused by Burkholderia glumae is a major disease of rice, which has dramatically affected rice production around the world in the last years. In this study we describe the assessment of three Streptomyces isolates as biocontrol agents for B. glumae. Additionally, the presence of other plant-growth promoting abilities and their possible beneficial effects upon their inoculation on rice plants was evaluated as an ecological analysis for their future inoculation in rice crops. Two isolates (A20 and 5.1) inhibited growth of virulent B. glumae strains, as well as a wide range of bacterial and fungal species, while a third strain (7.1) showed only antifungal activity. In vitro tests demonstrated the ability of these strains to produce siderophores, Indoleacetic acid (IAA), extracellular enzymes and solubilizing phosphate. Greenhouse experiments with two rice cultivars indicated that Streptomyces A20 is able to colonize rice plants and promote plant growth in both cultivars. Furthermore, an egfp tagged mutant was generated and colonization experiments were performed, indicating that Streptomyces A20 –GFP was strongly associated with root hairs, which may be related to the plant growth promotion observed in the gnotobiotic experiments. In order to characterize the antimicrobial compounds produced by strain A20 bacteria, mass spectrometry analyses were performed. This technique indicated that A20 produced several antimicrobial compounds with sizes below 3 kDa and three of these molecules were identified as Streptotricins D, E and F. These findings indicate the potential of Streptomyces A20 as a biocontrol inoculant to protect rice plants against bacterial diseases.
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Affiliation(s)
| | | | | | | | - Freddy A Ramos
- Departamento de Química. Universidad Nacional de Colombia, Bogotá, Colombia
| | - Corrado Guarnaccia
- Biotechnology Development Unit, International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Giuliano Degrassi
- Bacteriology and Plant Bacteriology Group, International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Vittorio Venturi
- Bacteriology and Plant Bacteriology Group, International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
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Elshahawi SI, Shaaban KA, Kharel MK, Thorson JS. A comprehensive review of glycosylated bacterial natural products. Chem Soc Rev 2015; 44:7591-697. [PMID: 25735878 PMCID: PMC4560691 DOI: 10.1039/c4cs00426d] [Citation(s) in RCA: 299] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A systematic analysis of all naturally-occurring glycosylated bacterial secondary metabolites reported in the scientific literature up through early 2013 is presented. This comprehensive analysis of 15 940 bacterial natural products revealed 3426 glycosides containing 344 distinct appended carbohydrates and highlights a range of unique opportunities for future biosynthetic study and glycodiversification efforts.
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Affiliation(s)
- Sherif I Elshahawi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA. and Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - Khaled A Shaaban
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA. and Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - Madan K Kharel
- School of Pharmacy, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Jon S Thorson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA. and Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, USA
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Identification of streptothricin class antibiotics in the early-stage of antibiotics screening by electrospray ionization mass spectrometry. J Antibiot (Tokyo) 2009; 61:660-7. [PMID: 19168980 DOI: 10.1038/ja.2008.93] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Several streptothricin antibiotics have been studied by tandem mass spectrometry. The dominant product ions were derived from the C(7)-N bond cleavage which lead to lose streptolidine from the [M+H](+). The fragmentation pathways of key ions were described and certained by parent scan. According to the generalized principles, streptothricin isomers could be distinguished easily by the difference of CID spectra. A facile method based on ion-pair RP-HPLC coupled with electrospray ionization tandem mass spectrometry has been established for the analysis of streptothricins in the fermentation broth of Streptomyces qinlingensis. A total of 19 streptothricin-like compounds were identified or tentatively characterized based on their mass spectral data, and in which 11 were the first reported compounds. This could be used as an important de-replication method in the programs of screening novel antibiotics.
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Seidel L, Haupt I. Isolierung von Streptothricin-resistenten Mutanten aus Escherichia coli K12, Stamm A19. J Basic Microbiol 2007. [DOI: 10.1002/jobm.19820220209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Nishikawa M, Ogawa K. Inhibition of epsilon-poly-L-lysine biosynthesis in Streptomycetaceae bacteria by short-chain polyols. Appl Environ Microbiol 2006; 72:2306-12. [PMID: 16597924 PMCID: PMC1448994 DOI: 10.1128/aem.72.4.2306-2312.2006] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Antimicrobial epsilon-poly-L-lysine (ePL) is secreted by Streptomycetaceae bacteria, and the mechanism of ePL biosynthesis remains to be elucidated. We previously reported that an unknown ePL derivative accumulates in the culture medium of ePL-producing bacteria when glycerol is added to the culture medium (Nishikawa and Ogawa, Appl. Environ. Microbiol. 68:3575-3581, 2002). In this study, by using matrix-assisted laser desorption ionization-time of flight mass spectrometry and nuclear magnetic resonance, we identified the unknown derivative as the ester formed between the hydroxyl group of a glycerol molecule and the terminal carboxyl group of an ePL molecule. When a short-chain aliphatic polyol, such as ethylene glycol, propanediol, or butanediol, was added instead of glycerol, a corresponding ePL-polyol monoester accumulated in the culture medium of ePL-producing bacteria. ePL esterification was accompanied by ePL synthesis in intact cells and a cell-free system, but no esterification of exogenous ePL was observed. ePL-polyol esters were formed during lysine polymerization. The number of lysine residues of ePL-polyol esters decreased with increasing polyol concentration. Taken together, these results indicate that ePL synthesis is inhibited by polyols via esterification and that ePL elongation occurs via the incorporation of lysine monomers into the carboxyl terminus of ePL.
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Affiliation(s)
- Masanobu Nishikawa
- Research Institute for Biological Sciences Okayama (RIBS Okayama), 7549-1 Kibichuo-cho, Okayama 716-1241, Japan.
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Dembitsky VM. Astonishing diversity of natural surfactants: 4. Fatty acid amide glycosides, their analogs and derivatives. Lipids 2005; 40:641-60. [PMID: 16196415 DOI: 10.1007/s11745-005-1427-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
FA amide glycosides are of great interest, especially for the medicinal and pharmaceutical industries. These biologically active natural surfactants are good prospects for future chemical preparation of compounds useful as antibiotics, anticancer agents, or for industry. More than 200 unusual and interesting natural surfactants, including their chemical structures and biological activities, are described in this review article.
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Affiliation(s)
- Valery M Dembitsky
- Department of Organic Chemistry and School of Pharmacy, Hebrew University, Jerusalem, Israel.
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Werner G, Hildebrandt B, Witte W. Aminoglycoside-streptothricin resistance gene cluster aadE-sat4-aphA-3 disseminated among multiresistant isolates of Enterococcus faecium. Antimicrob Agents Chemother 2001; 45:3267-9. [PMID: 11600397 PMCID: PMC90823 DOI: 10.1128/aac.45.11.3267-3269.2001] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Seventy-two Enterococcus faecium isolates of different origins highly resistant to nourseothricin and streptomycin were studied. Sequencing of a genomic fragment from two isolates identified a gene cluster, aadE-sat4-aphA-3, which has been isolated recently in staphylococci and Campylobacter coli. Patterns of digested PCR products of aadE-sat4-aphA-3 were identical for all isolates.
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Affiliation(s)
- G Werner
- Wernigerode Branch, Robert Koch-Institute, 38855 Wernigerode, Germany.
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Fernández-Moreno MA, Vallín C, Malpartida F. Streptothricin biosynthesis is catalyzed by enzymes related to nonribosomal peptide bond formation. J Bacteriol 1997; 179:6929-36. [PMID: 9371436 PMCID: PMC179630 DOI: 10.1128/jb.179.22.6929-6936.1997] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
In a search for strains producing biocides with a wide spectrum of activity, a new strain was isolated. This strain was taxonomically characterized as Streptomyces rochei F20, and the chemical structure of the bioactive product extracted from its fermentation broth was determined to be a mixture of streptothricins. From a genomic library of the producer strain prepared in the heterologous host Streptomyces lividans, a 7.2-kb DNA fragment which conferred resistance to the antibiotic was isolated. DNA sequencing of 5.2 kb from the cloned fragment revealed five open reading frames (ORFs) such that ORF1, -2, -3, and -4 were transcribed in the same direction while ORF5 was convergently arranged. The deduced product of ORF1 strongly resembled those of genes involved in peptide formation by a nonribosomal mechanism; the ORF2 product strongly resembled that of mphA and mphB isolated from Escherichia coli, which determines resistance to several macrolides by a macrolide 2'-phosphotransferase activity; the ORF3 product had similarities with several hydrolases; and the ORF5 product strongly resembled streptothricin acetyltransferases from different gram-positive and gram-negative bacteria. ORF5 was shown to be responsible for acetyl coenzyme A-dependent streptothricin acetylation. No similarities in the databases for the ORF4 product were found. Unlike other peptide synthases, that for streptothricin biosynthesis was arranged as a multienzymatic system rather than a multifunctional protein. Insertional inactivation of ORF1 and ORF2 (and to a lesser degree, of ORF3) abolishes antibiotic biosynthesis, suggesting their involvement in the streptothricin biosynthetic pathway.
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Affiliation(s)
- M A Fernández-Moreno
- Centro Nacional de Biotecnología, CSIC, Campus Universidad Autónoma de Madrid, Canto Blanco, Madrid, Spain
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Goo YM, Kim OY, Joe YA, Lee YB, Ju J, Kim BT, Lee YY. A new streptothricin family antibiotic producingStreptomyces spp. SNUS 8810-111; Characterization of the producing organisms, fermentation, isolation, and structure elucidation of antibioitics. Arch Pharm Res 1996. [DOI: 10.1007/bf02976852] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Tschäpe H, Tietze E, Prager R, Voigt W, Wolter E, Seltmann G. Plasmid-borne streptothricin resistance in gram-negative bacteria. Plasmid 1984; 12:189-96. [PMID: 6098905 DOI: 10.1016/0147-619x(84)90043-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Plasmids, which code for a new type of drug resistance due to the acetylation of streptothricin and belonging to various incompatibility groups (I1, I2, W3, FII, S, X, and N) were identified in gram-negative bacteria. The gene for the acetyltransferase is closely linked to a gene for the streptomycin/spectinomycin adenylyltransferase AAD-3" on a novel type of a transposon, designated Tn1825. This is related to Tn7.
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12
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Seidel L, Haupt I. [Isolation of streptothricin resistant mutants from E coli K12, strain A19]. ZEITSCHRIFT FUR ALLGEMEINE MIKROBIOLOGIE 1982; 22:133-7. [PMID: 6283749 DOI: 10.1002/jobm.3630220209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mutants with various levels of resistance to streptothricin were isolated from Escherichia coli K12, strain A19 after mutagenesis with N-methyl-N-nitro-N-nitroso-guanidine and ethylmethane-sulfonate. Nourseothricin, a mixture of streptothricin F and D was the selection agent. Spontaneous resistant mutants could not be found. The streptothricin-resistant mutant E. coli A19 Stcr 2/2/1 shows cross-resistance to some of the aminoglycoside antibiotics investigated, but no cross-resistance to chloramphenicol and chlortetracyclin. These results indicate similar mechanisms of action of streptothricin and aminoglycoside antibiotics.
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Streptothricins and Related Antibiotics. ACTA ACUST UNITED AC 1978. [DOI: 10.1016/s0301-4770(08)60960-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Borders DB. Ion-exchange chromatography of streptothricin-like antibiotics. Methods Enzymol 1975; 43:256-63. [PMID: 1094234 DOI: 10.1016/0076-6879(75)43086-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Gräfe U, Bocker H, Reinhardt G, Thrum H. [Regulatory modification of nourseothricin biosynthesis by o-aminobenzoic acid in Streptomyces noursei JA 3890b cultures]. ZEITSCHRIFT FUR ALLGEMEINE MIKROBIOLOGIE 1974; 14:659-73. [PMID: 4467479 DOI: 10.1002/jobm.3630140804] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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