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Ishiuchi K, Nagumo A, Kawaguchi M, Furuyashiki H, Nakagawa H, Hirose D. Stereochemistries of Mariannamides C and D, Two Lipohexapeptides, Isolated from Mariannaea elegans NBRC102301. HETEROCYCLES 2022. [DOI: 10.3987/com-22-14728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sphaerostilbellins, New Antimicrobial Aminolipopeptide Peptaibiotics from Sphaerostilbella toxica. Biomolecules 2020; 10:biom10101371. [PMID: 32993102 PMCID: PMC7600149 DOI: 10.3390/biom10101371] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 09/18/2020] [Accepted: 09/25/2020] [Indexed: 02/07/2023] Open
Abstract
Sphaerostilbella toxica is a mycoparasitic fungus that can be found parasitizing wood-decay basidiomycetes in the southern USA. Organic solvent extracts of fermented strains of S. toxica exhibited potent antimicrobial activity, including potent growth inhibition of human pathogenic yeasts Candida albicans and Cryptococcus neoformans, the respiratory pathogenic fungus Aspergillus fumigatus, and the Gram-positive bacterium Staphylococcus aureus. Bioassay-guided separations led to the purification and structure elucidation of new peptaibiotics designated as sphaerostilbellins A and B. Their structures were established mainly by analysis of NMR and HRMS data, verification of amino acid composition by Marfey's method, and by comparison with published data of known compounds. They incorporate intriguing structural features, including an N-terminal 2-methyl-3-oxo-tetradecanoyl (MOTDA) residue and a C-terminal putrescine residue. The minimal inhibitory concentrations for sphaerostilbellins A and B were measured as 2 μM each for C. neoformans, 1 μM each for A. fumigatus, and 4 and 2 μM, respectively, for C. albicans. Murine macrophage cells were unaffected at these concentrations.
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Yoshimura A, Nishimura S, Suzuki T, Hattori A, Dohmae N, Kato T, Kakeya H. Isolation, Structure Elucidation, and Conformational Regulation of Myropeptins, Lipopeptides from the Fungus Myrothecium roridum. Org Lett 2019; 21:7524-7528. [PMID: 31497968 DOI: 10.1021/acs.orglett.9b02801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Myropeptins, novel lipopeptides, were isolated from the culture broth of a fungus Myrothecium roridum F27113. Myropeptin A1 comprises a linear 20 amino acid-peptide chain and a lauric acid capping the N-terminus. Myropeptin A1 formed a helix structure and showed biological activities including antifungal and hemolysis. Myropeptin B, a shorter analogue by two amino acid residues, showed neither helicity nor biological activity. These two amino acids at the C-terminus regulate the molecular function of myropeptin A1.
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Affiliation(s)
- Aya Yoshimura
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences , Kyoto University , Kyoto 606-8501 , Japan
| | - Shinichi Nishimura
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences , Kyoto University , Kyoto 606-8501 , Japan
| | - Takehiro Suzuki
- Biomolecular Characterization Unit , RIKEN Center for Sustainable Resource Science , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Akira Hattori
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences , Kyoto University , Kyoto 606-8501 , Japan
| | - Naoshi Dohmae
- Biomolecular Characterization Unit , RIKEN Center for Sustainable Resource Science , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Taira Kato
- Research & Development Division , MicroBioPharm Japan Co., Ltd. , 156 Nakagawara , Kiyosu-shi , Aichi 452-0915 , Japan
| | - Hideaki Kakeya
- Department of System Chemotherapy and Molecular Sciences, Division of Bioinformatics and Chemical Genomics, Graduate School of Pharmaceutical Sciences , Kyoto University , Kyoto 606-8501 , Japan
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Brückner H, Fox S, Degenkolb T. Sequences of Acretocins, Peptaibiotics Containing the Rare 1-Aminocyclopropanecarboxylic Acid, from Acremonium crotocinigenum CBS 217.70. Chem Biodivers 2019; 16:e1900276. [PMID: 31336036 DOI: 10.1002/cbdv.201900276] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/18/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Hans Brückner
- Interdisciplinary Research Center for BioSystems, Land Use and Nutrition (IFZ), Department of Food Sciences, Institute of Nutritional Science, Justus-Liebig University of Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
| | - Stefan Fox
- Institute of Chemistry, Department of Bioinorganic Chemistry, University of Hohenheim, Garbenstr. 30, 70599, Stuttgart, Germany
| | - Thomas Degenkolb
- Interdisciplinary Research Center for BioSystems, Land Use and Nutrition (IFZ), Department of Food Sciences, Institute of Nutritional Science, Justus-Liebig University of Giessen, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany.,Present address: Institute of Insect Biotechnology, Department of Applied Entomology, IFZ, Justus-Liebig University Giessen, Heinrich-Buff-Ring 26-32, Giessen, Germany
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Degenkolb T, Brückner H. Peptaibiomics: Towards a Myriad of Bioactive Peptides Containing Cα-Dialkylamino Acids? Chem Biodivers 2008; 5:1817-43. [DOI: 10.1002/cbdv.200890171] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sultana N, Atta-ur-Rahman, Khalid A. A new fatty ester and a new triterpene fromSkimmia laureola. Nat Prod Res 2008; 22:37-47. [DOI: 10.1080/14786410601130356] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Degenkolb T, Kirschbaum J, Brückner H. New Sequences, Constituents, and Producers of Peptaibiotics: An Updated Review. Chem Biodivers 2007; 4:1052-67. [PMID: 17589876 DOI: 10.1002/cbdv.200790096] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
To date, 18 genera of imperfect and ascomycetous fungi have been recognized to produce ca. 700 individual sequences of peptaibiotics. These are linear polypeptide antibiotics which i) have a molecular weight between 500 and 2,200 Dalton, thus containing 5-21 residues; ii) show a high content of alpha-aminoisobutyric acid; iii) are characterized by the presence of other nonproteinogenic amino acids and/or lipoamino acids; iv) possess an acylated N-terminus, and v) have a C-terminal residue that, in most of them, consists of a free or acetylated amide-bonded 1,2-amino alcohol, but might also be an amine, amide, free amino acid, 2,5-dioxopiperazine, or sugar alcohol. From April 2003 until present, ca. 300 new individual sequences of peptaibiotics have been published in the literature, but most of them have not yet been included in databases. To summarize these new sequences and novel constituents, as well as to introduce fungal species hitherto unknown as producers of peptaibiotics, the relevant literature is reviewed. Furthermore, ecophysiological and taxonomic aspects of the producing fungi are discussed.
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Affiliation(s)
- Thomas Degenkolb
- Interdisciplinary Research Centre for Biosystems, Land Use and Nutrition (IFZ), Department of Food Sciences, Institute of Nutritional Science, University of Giessen, Heinrich-Buff-Ring 26-32, Giessen, Germany
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Psurek A, Neusüss C, Degenkolb T, Brückner H, Balaguer E, Imhof D, Scriba GKE. Detection of new amino acid sequences of alamethicins F30 by nonaqueous capillary electrophoresis–mass spectrometry. J Pept Sci 2006; 12:279-90. [PMID: 16138388 DOI: 10.1002/psc.720] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The microheterogeneous alamethicin F30 (ALM F30) isolated from the fermentation of Trichoderma viride strain NRRL 3199 was analyzed by nonaqueous capillary electrophoresis coupled to electrospray ion-trap mass spectrometry (ESI-IT-MS) and electrospray time-of-flight mass spectrometry (ESI-TOF-MS). Tandem ESI-IT-MS was used for elucidation of the amino acid sequence based on the fragmentation pattern of selected parent ions. The MS/MS spectra using the [M + 3H](3+) or [M + 2H](2+) ions as precursor ions displayed the respective b- and the y-type fragments resulting from cleavage of the particularly labile Aib-Pro bond. The MS(3) of these fragments generated the b acylium ion series, as well as internal fragment ion series. Eleven amino acid sequences were identified, characterized by the exchange of Ala to Aib in position 6, Gln to Glu in positions 7 or 19 as well as the loss of the C-terminal amino alcohol. In addition, two truncated pyroglutamyl peptaibols were found. Overall, seven new sequences are reported compared to earlier LC-MS studies. The composition of the components was confirmed by on-line ESI-TOF-MS detection. Mass accuracy well below 5 ppm was observed. Quantification of the individual components was achieved by a combination of UV and TOF-MS detection.
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Affiliation(s)
- Arndt Psurek
- University of Jena, School of Pharmacy, Department of Pharmaceutical Chemistry, Germany
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Degenkolb T, Berg A, Gams W, Schlegel B, Gräfe U. The occurrence of peptaibols and structurally related peptaibiotics in fungi and their mass spectrometric identification via diagnostic fragment ions. J Pept Sci 2003; 9:666-78. [PMID: 14658788 DOI: 10.1002/psc.497] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Peptaibols and related peptide antibiotics (peptaibiotics) display diagnostically useful fragmentation patterns during mass spectrometry (FAB-MS, ESI-CID-MS/MS and CID-MSn]. The paper compiles fragmentation data of pseudo-molecular ions reported in the literature as a guide to the rational identification of recurrently isolated and new peptaibols and peptaibiotics. Taxonomic and ecological aspects of microorganisms producing peptaibols and peptaibiotics are discussed.
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Affiliation(s)
- Thomas Degenkolb
- Hans-Knöll-Institute for Natural Products Research, BeutenbergstraBe 11a, D-07745 Jena, Germany.
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Affiliation(s)
- Fonzie J Quance-Fitch
- Veterinary Medical Teaching Hospital, University of California-Davis, Davis, CA, USA.
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Wang J, Huang Y, Fang M, Zhang Y, Zheng Z, Zhao Y, Su W. Brefeldin A, a cytotoxin produced by Paecilomyces sp. and Aspergillus clavatus isolated from Taxus mairei and Torreya grandis. FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY 2002; 34:51-7. [PMID: 12208606 DOI: 10.1111/j.1574-695x.2002.tb00602.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Paecilomyces sp. and Aspergillus clavatus, which were isolated from Taxus mairei and Torreya grandis from southeast China, produced toxic metabolites when grown in liquid culture. Nuclear magnetic resonance techniques, infrared spectrometry, electrospray ionization mass spectroscopy and X-ray analysis identified brefeldin A, a bioactive metabolite produced by a number of fungal species belonging to the genera Alternaria, Ascochyta, Penicillium, Curvularia, Cercospora and Phyllosticta. This is the first report of the isolation of the cytotoxin from Paecilomyces sp. and A. clavatus. The relevance of brefeldin A to the association between these fungi and their host plants is discussed.
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Affiliation(s)
- Jianfeng Wang
- The Key Laboratory of Ministry of Education for Cell Biology and Tumor Cell Engineering, School of Life Sciences, Xiamen University, P.O. Box 958, Xiamen 361005, PR China.
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Anis I, Ahmed S, Malik A, Yasin A, Choudary MI. Enzyme inhibitory constituents from Duranta repens. Chem Pharm Bull (Tokyo) 2002; 50:515-8. [PMID: 11964000 DOI: 10.1248/cpb.50.515] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Isoprenylated flavonoids 5,7-dihydroxy-3'-(2-hydroxy-3-methyl-3-butenyl)-3,6,4'-trimethoxyflavone (1), 3,7-dihydroxy-3'-(2-hydroxy-3-methyl-3-butenyl)-5,6,4'-trimethoxyflavone (2) and an isoprenylated acetophenone derivative (3) have been isolated from Duranta repens along with known compounds, 5-hydroxy-3,6,7,4'-tetramethoxyflavone (4), rosenonolactone (5), 6,7-dimethoxycoumarin (6), 5alpha,8alpha-epidioxyergosta-6,22-dien-3beta-ol (7) and 5alpha,8alpha-epidioxyergosta-6,9(11),22-trien-3beta-ol (8), isolated for the first time from this species. Their structures and the relative configuration were determined by spectroscopic methods (1H- and 13C-NMR, IR, UV and MS) and two-dimensional (2D)-NMR experiments. The compounds 1-5 showed inhibitory activity against prolyl endopeptidase while 4 and 5 were also active against thrombin.
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Affiliation(s)
- Itrat Anis
- International Center of Chemical Sciences, HEJ Research Institute of Chemistry, University of Karachi, Pakistan
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Christner C, Wyrwa R, Marsch S, Küllertz G, Thiericke R, Grabley S, Schumann D, Fischer G. Synthesis and cytotoxic evaluation of cycloheximide derivatives as potential inhibitors of FKBP12 with neuroregenerative properties. J Med Chem 1999; 42:3615-22. [PMID: 10479292 DOI: 10.1021/jm991038t] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
On the basis of the new finding that the protein synthesis inhibitor cycloheximide (1, 4-[2-(3, 5-dimethyl-2-oxocyclohexyl)-2-hydroxyethyl]-2,6-piperidinedione) is able to competitively inhibit hFKBP12 (K(i) = 3.4 microM) and homologous enzymes, a series of derivatives has been synthesized. The effect of the compounds on the activity of hFKBP12 and their cytotoxicity against eukaryotic cell lines (mouse L-929 fibroblasts, K-562 leukemic cells) were determined. As a result, several less toxic or nontoxic cycloheximide derivatives were identified by N-substitution of the glutarimide moiety and exhibit IC(50) values in the range of 22.0-4.4 microM for inhibition of hFKBP12. Among these compounds cycloheximide-N-(ethyl ethanoate) (10, K(i) = 4.1 microM), which exerted FKBP12 inhibition to an extent comparable to that of cycloheximide (1), was found to cause an approximately 1000-fold weaker inhibitory effect on eukaryotic protein synthesis (IC(50) = 115 microM). Cycloheximide-N-(ethyl ethanoate) (10) was able to significantly speed nerve regeneration in a rat sciatic nerve neurotomy model at dosages of 30 mg/kg.
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Affiliation(s)
- C Christner
- Max-Planck Research Unit, Enzymology of Protein Folding, Weinbergweg 22, D-06120 Halle/Saale, Germany
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