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Liu Y, Yue S, Bilal M, Jan M, Wang W, Hu H, Zhang X. Development of Artificial Synthetic Pathway of Endophenazines in Pseudomonas chlororaphis P3. BIOLOGY 2022; 11:biology11030363. [PMID: 35336738 PMCID: PMC8945225 DOI: 10.3390/biology11030363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary Terpenoid phenazines generally produced in Streptomyces exhibit potential antitumor and antibacterial activities. In this study, we designed and constructed an artificial biosynthetic pathway for the synthesis of terpenoid phenazines in Pseudomonas chlororaphis P3. We successfully synthesized endophenazine A and endophenazine A1 for the first time in Pseudomonas by introducing the prenyltransferase PpzP. Moreover, we revealed the biosynthetic pathway of endophenazine A1 in P. chlororaphis P3. This study enriches the diversity of phenazines in P. chlororaphis P3 and provides a reference for the heterologous synthesis of terpenoid phenazines. Abstract Endophenazine A is a terpenoid phenazine with phenazine-1-carboxylic acid (PCA), and dimethylallyl diphosphate (DMAPP) derived from the 2-methyl-D-erythritol-4-phosphate (MEP) pathway as the precursor, which shows good antimicrobial activity against several Gram-positive bacteria and fungi. However, the highest yield of endophenazine A was about 20 mg/L in Streptomyces, limiting its large-scale industrial development. Pseudomonas chlororaphis P3, possessing an efficient PCA synthesis and MEP pathways, is a suitable chassis to synthesize endophenazine A. Herein, we designed an artificial biosynthetic pathway for the synthesis of endophenazine A in P. chlororaphis P3. Primarily, the prenyltransferase PpzP from Streptomyces anulatus 9663 was introduced into P. chlororaphis P3 and successfully synthesized endophenazine A. Another phenazine compound, endophenazine A1, was discovered and identified as a leakage of the intermediate 4-hydroxy-3-methyl-2-butene pyrophosphate (HMBPP). Finally, the yield of endophenazine A reached 279.43 mg/L, and the yield of endophenazine A1 reached 189.2 mg/L by metabolic engineering and medium optimization. In conclusion, we successfully synthesized endophenazine A and endophenazine A1 in P. chlororaphis P3 for the first time and achieved the highest titer, which provides a reference for the heterologous synthesis of terpenoid phenazines.
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Affiliation(s)
- Ying Liu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
| | - Shengjie Yue
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China;
| | - Malik Jan
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
| | - Wei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hongbo Hu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xuehong Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; (Y.L.); (S.Y.); (M.J.); (W.W.); (H.H.)
- Shanghai Nongle Joint R&D Center on Biopesticides and Biofertilizers, Shanghai Jiao Tong University, Shanghai 200240, China
- Correspondence: ; Tel.: +86-21-3420-6742
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Huigens RW, Brummel BR, Tenneti S, Garrison AT, Xiao T. Pyrazine and Phenazine Heterocycles: Platforms for Total Synthesis and Drug Discovery. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27031112. [PMID: 35164376 PMCID: PMC8839373 DOI: 10.3390/molecules27031112] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/20/2021] [Accepted: 12/22/2021] [Indexed: 12/14/2022]
Abstract
There are numerous pyrazine and phenazine compounds that demonstrate biological activities relevant to the treatment of disease. In this review, we discuss pyrazine and phenazine agents that have shown potential therapeutic value, including several clinically used agents. In addition, we cover some basic science related to pyrazine and phenazine heterocycles, which possess interesting reactivity profiles that have been on display in numerous cases of innovative total synthesis approaches, synthetic methodologies, drug discovery efforts, and medicinal chemistry programs. The majority of this review is focused on presenting instructive total synthesis and medicinal chemistry efforts of select pyrazine and phenazine compounds, and we believe these incredible heterocycles offer promise in medicine.
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Ishibashi M, Hara Y, Chiba M, Watanabe K. Isolation of Ikahonone, 4-Methyl-2,4-dihydroxy-3-pentanone from Bacillus cereus IFM12235. HETEROCYCLES 2022. [DOI: 10.3987/com-21-s(r)4] [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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Abstract
Covering: up to mid-2020 Terpenoids, also called isoprenoids, are the largest and most structurally diverse family of natural products. Found in all domains of life, there are over 80 000 known compounds. The majority of characterized terpenoids, which include some of the most well known, pharmaceutically relevant, and commercially valuable natural products, are produced by plants and fungi. Comparatively, terpenoids of bacterial origin are rare. This is counter-intuitive to the fact that recent microbial genomics revealed that almost all bacteria have the biosynthetic potential to create the C5 building blocks necessary for terpenoid biosynthesis. In this review, we catalogue terpenoids produced by bacteria. We collected 1062 natural products, consisting of both primary and secondary metabolites, and classified them into two major families and 55 distinct subfamilies. To highlight the structural and chemical space of bacterial terpenoids, we discuss their structures, biosynthesis, and biological activities. Although the bacterial terpenome is relatively small, it presents a fascinating dichotomy for future research. Similarities between bacterial and non-bacterial terpenoids and their biosynthetic pathways provides alternative model systems for detailed characterization while the abundance of novel skeletons, biosynthetic pathways, and bioactivies presents new opportunities for drug discovery, genome mining, and enzymology.
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Affiliation(s)
- Jeffrey D Rudolf
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
| | - Tyler A Alsup
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
| | - Baofu Xu
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
| | - Zining Li
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
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Kohatsu H, Kamo S, Furuta M, Tomoshige S, Kuramochi K. Synthesis and Cytotoxic Evaluation of N-Alkyl-2-halophenazin-1-ones. ACS OMEGA 2020; 5:27667-27674. [PMID: 33134730 PMCID: PMC7594318 DOI: 10.1021/acsomega.0c04253] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/02/2020] [Indexed: 06/11/2023]
Abstract
In this study, the synthesis of N-alkyl-2-halophenazin-1-ones has been established. Six N-alkyl-2-halophenazin-1-ones, including WS-9659 B and marinocyanins A and B, were synthesized by the direct oxidative condensation of 4-halo-1,2,3-benzenetriol with the corresponding N-alkylbenzene-1,2-diamines. One of the most significant features of the present method is that it can be successfully applied to the synthesis of N-alkyl-2-chlorophenazin-1-ones. The traditional chlorination of N-alkyl-phenazin-1-ones with N-chlorosuccinimide selectively occurs at the 4-position to afford the undesired N-alkyl-4-chlorophenazin-1-ones. Our synthetic route successfully circumvents this problem, culminating in the first chemical synthesis of WS-9659 B. The cytotoxicity of six N-alkyl-2-halophenazin-1-ones and three N-alkylphenazin-1-ones against human promyelocytic leukemia HL-60, human lung cancer A549, and normal MRC-5 cells was evaluated. Among the compounds tested in this study, 2-chloropyocyanin possesses significant selectivity toward A549 cells. The cytotoxic evaluation provides structural insights into the potency and selectivity of these compounds for cancer cells.
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Ishibashi M, Kobayashi N, Hara Y, A. Arai M, Hara S, Gonoi T, Yaguchi T. Isolation of Inohanalactone, a γ-Butyrolactone, from Nocardia inohanensis IFM0092T. HETEROCYCLES 2020. [DOI: 10.3987/com-19-s(f)11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Yokoyama Y, Arai MA, Hara Y, Ishibashi M. Nonactic Acid Derivatives Isolated From Streptomyces werraensis IFM12104 in a Screening Program for BMI1 Promoter Inhibitory Activity. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19866583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Upon screening for compounds with B cell-specific Moloney murine leukemia virus region 1 (BMI1) promoter inhibitory activity, 3 nonactic acid derivatives (1-3) were isolated from Streptomyces werraensis IFM12104. Although spectral data of compound 1 were identical with those reported in literature for 4α-(3, 5-dihydroxy-heptyl)-3α-methyl-2-oxetanone (4), compound 1 was revealed to be homononactic acid by X-ray analysis. Compounds 2 and 3 were identified as bishomononactic acid and nonactic acid using spectral data. The 3 compounds 1 to 3 inhibited BMI1 promoter activities with IC50 values of 240, 160, and 180 μM, respectively.
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Affiliation(s)
- Yusuke Yokoyama
- Graduate School of Pharmaceutical Sciences, Chiba University, Japan
| | - Midori A. Arai
- Graduate School of Pharmaceutical Sciences, Chiba University, Japan
| | - Yasumasa Hara
- Graduate School of Pharmaceutical Sciences, Chiba University, Japan
| | - Masami Ishibashi
- Graduate School of Pharmaceutical Sciences, Chiba University, Japan
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Hara S, Hara Y, Arai MA, Kusuya Y, Takahashi H, Yaguchi T, Ishibashi M. Isolation of Nabscessin C from Nocardia abscessus IFM 10029 T and a Study on Biosynthetic Pathway for Nabscessins. Chem Pharm Bull (Tokyo) 2018; 66:976-982. [PMID: 30270243 DOI: 10.1248/cpb.c18-00430] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new aminocyclitol derivative, designated nabscessin C (1), was isolated from Nocardia abscessus IFM 10029T. Nabcessin C is an isomer of nabscessins A (2) and B (3) with different positioning of the acyl group. Absolute configuration of nabscessin A was determined by conversion into the 2-deoxy-scyllo-inosamine pentaacetyl derivative (4) by hydrolysis and acetylation of 2. The biosynthetic pathway of nabscessins is proposed based on gene expression analysis.
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Affiliation(s)
- Shoko Hara
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Yasumasa Hara
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Midori A Arai
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Yoko Kusuya
- Medical Mycology Research Center, Chiba University
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Hara Y, Arai MA, Sakai K, Ishikawa N, Gonoi T, Yaguchi T, Ishibashi M. Dehydropropylpantothenamide isolated by a co-culture of Nocardia tenerifensis IFM 10554T in the presence of animal cells. J Nat Med 2017; 72:280-289. [DOI: 10.1007/s11418-017-1161-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 11/30/2017] [Indexed: 10/18/2022]
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Hara S, Ishikawa N, Hara Y, Nehira T, Sakai K, Gonoi T, Ishibashi M. Nabscessins A and B, Aminocyclitol Derivatives from Nocardia abscessus IFM 10029 T. JOURNAL OF NATURAL PRODUCTS 2017; 80:565-568. [PMID: 28112922 DOI: 10.1021/acs.jnatprod.6b00935] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two new aminocyclitol amide derivatives, nabscessins A (1) and B (2), were isolated from the culture broth of a pathogenic actinomycete species, Nocardia abscessus IFM 10029T. The structures of nabscessins A and B were elucidated by spectral studies, and the compounds showed antifungal activity against Cryptococcus neoformans, with IC50 values of 32 and 16 μg/mL, respectively.
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Affiliation(s)
- Shoko Hara
- Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Naoki Ishikawa
- Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Yasumasa Hara
- Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tatsuo Nehira
- Graduate School of Integrated Arts and Sciences, Hiroshima University , 1-7-1 Kagamiyama, Higashi-hiroshima, 739-8521, Japan
| | - Kanae Sakai
- Medical Mycology Research Center, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8673, Japan
| | - Tohru Gonoi
- Medical Mycology Research Center, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8673, Japan
| | - Masami Ishibashi
- Graduate School of Pharmaceutical Sciences, Chiba University , 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
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Castillo A, Silva L, Briones D, Quílez del Moral JF, Barrero AF. Collective Synthesis of Natural Products Sharing the Dihydro-γ-Ionone Core. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Newsome AG, Culver CA, van Breemen RB. Nature's palette: the search for natural blue colorants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:6498-511. [PMID: 24930897 DOI: 10.1021/jf501419q] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The food and beverage industry is seeking to broaden the palette of naturally derived colorants. Although considerable effort has been devoted to the search for new blue colorants in fruits and vegetables, less attention has been directed toward blue compounds from other sources such as bacteria and fungi. The current work reviews known organic blue compounds from natural plant, animal, fungal, and microbial sources. The scarcity of blue-colored metabolites in the natural world relative to metabolites of other colors is discussed, and structural trends common among natural blue compounds are identified. These compounds are grouped into seven structural classes and evaluated for their potential as new color additives.
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Affiliation(s)
- Andrew G Newsome
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois College of Pharmacy , 833 South Wood Street, M/C 781, Chicago, Illinois 60612, United States
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Qin Z, Wang X, Rateb ME, Ass'ad LA, Jaspars M, Deng Z, Yu Y, Deng H. Disruption of a methyltransferase gene in actinomycin G gene cluster inStreptomyces iakyrusincreases the production of phenazinomycin. FEMS Microbiol Lett 2014; 352:62-8. [DOI: 10.1111/1574-6968.12370] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 12/19/2013] [Accepted: 12/20/2013] [Indexed: 11/28/2022] Open
Affiliation(s)
- Zhiwei Qin
- Key Laboratory of Combinatory Biosynthesis and Drug Discovery (Ministry of Education); School of Pharmaceutical Sciences; Wuhan University; Wuhan China
- Marine Biodiscovery Centre; Department of Chemistry; University of Aberdeen; Aberdeen UK
| | - Xiaoling Wang
- Marine Biodiscovery Centre; Department of Chemistry; University of Aberdeen; Aberdeen UK
| | - Mostafa Ezzat Rateb
- Marine Biodiscovery Centre; Department of Chemistry; University of Aberdeen; Aberdeen UK
- Pharmacognosy Department; School of Pharmacy; Beni-Suef University; Beni-Suef Egypt
| | - Lina Adnan Ass'ad
- Marine Biodiscovery Centre; Department of Chemistry; University of Aberdeen; Aberdeen UK
- Department of Clinical Pharmacology; University of Aberdeen; Aberdeen UK
| | - Marcel Jaspars
- Marine Biodiscovery Centre; Department of Chemistry; University of Aberdeen; Aberdeen UK
| | - Zixin Deng
- Key Laboratory of Combinatory Biosynthesis and Drug Discovery (Ministry of Education); School of Pharmaceutical Sciences; Wuhan University; Wuhan China
| | - Yi Yu
- Key Laboratory of Combinatory Biosynthesis and Drug Discovery (Ministry of Education); School of Pharmaceutical Sciences; Wuhan University; Wuhan China
| | - Hai Deng
- Key Laboratory of Combinatory Biosynthesis and Drug Discovery (Ministry of Education); School of Pharmaceutical Sciences; Wuhan University; Wuhan China
- Marine Biodiscovery Centre; Department of Chemistry; University of Aberdeen; Aberdeen UK
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Bioactive heterocyclic natural products from actinomycetes having effects on cancer-related signaling pathways. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2014; 99:147-98. [PMID: 25296439 DOI: 10.1007/978-3-319-04900-7_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Zocher G, Saleh O, Heim JB, Herbst DA, Heide L, Stehle T. Structure-based engineering increased the catalytic turnover rate of a novel phenazine prenyltransferase. PLoS One 2012; 7:e48427. [PMID: 23119011 PMCID: PMC3485228 DOI: 10.1371/journal.pone.0048427] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 09/25/2012] [Indexed: 11/18/2022] Open
Abstract
Prenyltransferases (PTs) catalyze the regioselective transfer of prenyl moieties onto aromatic substrates in biosynthetic pathways of microbial secondary metabolites. Therefore, these enzymes contribute to the chemical diversity of natural products. Prenylation is frequently essential for the pharmacological properties of these metabolites, including their antibiotic and antitumor activities. Recently, the first phenazine PTs, termed EpzP and PpzP, were isolated and biochemically characterized. The two enzymes play a central role in the biosynthesis of endophenazines by catalyzing the regiospecific prenylation of 5,10-dihydrophenazine-1-carboxylic acid (dhPCA) in the secondary metabolism of two different Streptomyces strains. Here we report crystal structures of EpzP in its unliganded state as well as bound to S-thiolodiphosphate (SPP), thus defining the first three-dimensional structures for any phenazine PT. A model of a ternary complex resulted from in silico modeling of dhPCA and site-directed mutagenesis. The structural analysis provides detailed insight into the likely mechanism of phenazine prenylation. The catalytic mechanism suggested by the structure identifies amino acids that are required for catalysis. Inspection of the structures and the model of the ternary complex furthermore allowed us to rationally engineer EpzP variants with up to 14-fold higher catalytic reaction rate compared to the wild-type enzyme. This study therefore provides a solid foundation for additional enzyme modifications that should result in efficient, tailor-made biocatalysts for phenazines production.
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Affiliation(s)
- Georg Zocher
- Interfaculty Institute of Biochemistry, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Orwah Saleh
- Pharmaceutical Institute, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Joel B. Heim
- Interfaculty Institute of Biochemistry, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Dominik A. Herbst
- Interfaculty Institute of Biochemistry, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Lutz Heide
- Pharmaceutical Institute, Eberhard Karls University Tübingen, Tübingen, Germany
- * E-mail: (LH); (TS)
| | - Thilo Stehle
- Interfaculty Institute of Biochemistry, Eberhard Karls University Tübingen, Tübingen, Germany
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- * E-mail: (LH); (TS)
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Cimmino A, Evidente A, Mathieu V, Andolfi A, Lefranc F, Kornienko A, Kiss R. Phenazines and cancer. Nat Prod Rep 2012; 29:487-501. [DOI: 10.1039/c2np00079b] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Antifungal and antifeedant activities of extracellular product of Streptomyces spp. ERI-04 isolated from Western Ghats of Tamil Nadu. J Mycol Med 2010. [DOI: 10.1016/j.mycmed.2010.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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In vitro and in vivo anti-Trypanosoma brucei activities of phenazinomycin and related compounds. J Antibiot (Tokyo) 2010; 63:579-81. [DOI: 10.1038/ja.2010.72] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Boudjella H, Bouti K, Zitouni A, Mathieu F, Lebrihi A, Sabaou N. Isolation and partial characterization of pigment-like antibiotics produced by a new strain of Streptosporangium isolated from an Algerian soil. J Appl Microbiol 2008; 103:228-36. [PMID: 17584469 DOI: 10.1111/j.1365-2672.2006.03280.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Identification of a new actinomycete strain Sg3, belonging to the genus Streptosporangium and partial characterization of the produced antibacterial activities. METHODS AND RESULTS The strain Sg3 was isolated from an Algerian Saharan soil and identified by morphological, chemotaxonomic and phylogenetic analyses to the genus Streptosporangium. The comparison of its physiological characteristics with those of known species of Streptosporangium showed significant differences with the nearest species Streptosporangium carneum. Analysis of the 16S rDNA sequence of strain Sg3 showed a similarity level ranging between 97% and 98.8% within Streptosporangium species, with S. carneum the most closely related. Strain Sg3 showed a red coloured antibacterial activity against gram-positive bacteria on several culture media. The purification of the red pigment by chromatographic methods led to the isolation of three active products. The (1)H nuclear magnetic resonance (NMR), mass, infrared (IR) and ultraviolet-visible (UV-VIS) data of these molecules strongly suggested that they belonged to the quinone-anthracycline group with three or more rings. CONCLUSIONS Strain Sg3 represents a distinct phyletic line suggesting a new genomic species. It produces antibacterial activities identified as quinone-anthracycline aromatics. SIGNIFICANCE AND IMPACT OF THE STUDY The quinone-anthracycline antibiotics are known for their antimicrobial and antineoplastic activities and are used in chemotherapy for the treatment of many cancer diseases. The present work constitutes the first stage of a whole series of studies to be realized on these antibiotics before arriving at a possible application.
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Affiliation(s)
- H Boudjella
- Laboratoire de Recherche sur les Produits bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, Vieux-Kouba, Alger, Algérie
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From the study of naturally occurring N-allylated phenazines towards new Pd-mediated transformations. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.09.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Garipova IY, Silnikov VN. New Synthetic Approaches to Multifunctional Phenazinium Salt Derivatives. Molecules 2003. [PMCID: PMC6146926 DOI: 10.3390/80600505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Affiliation(s)
- H G Floss
- Department of Chemistry, University of Washington, Seattle 98195-1700, USA
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Abstract
Bioactive microbial metabolites are attracting increasing attention as useful agents for medicine, veterinary medicine, agriculture, and as unique biochemical tools. A review of the current trends in the discovery of new metabolites shows that the number of active compounds with non-antibiotic type of activity has increased, resulting in an expansion of the variety of bioactivity of microbial metabolites. Factors that contribute to the increased rate of discovery include: development of new methods for activity measurement, exploitation of novel groups of microorganisms as sources of active compounds, new directions for chemical modification, and incorporation of newer knowledge of biotechnology into screening systems. To exemplify this, typical screening methods, and chemical and biological properties of several bioactive compounds obtained by these methods are discussed.
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Affiliation(s)
- S Omura
- Research Center for Biological Function, Kitasato Institute, Tokyo, Japan
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Abstract
The study of antibiotics and other fermentation products has shown that a seemingly unlimited number of compounds with diverse structures are produced by microorganisms. The continued high rate of discovery of new chemical entities, in the light of the abundance of microbial products already described, is due to creative screening procedures that incorporate such features as the emphasis on unusual microorgnaisms, their special propagation and fermentation requirements, supersensitive and highly selective assays, genetic engineering both for the biosynthesis of new compounds and in the development of screening systems, early in vivo evaluation, improved isolation techniques, modern procedures for structure determination, computer-assisted identification, and an efficient multidisciplinary approach. This review focuses on the genesis and development of the gamut of methodologies that have led to the successful detection of the wide variety of novel secondary metabolites that include antibacterial, antigungal, antiviral and antitumour antibiotics, enzyme inhibitors, pharmacologically and immunologically active agents, products useful in agriculture and animal husbandry, microbial regulators, and other compounds for which no bioactive role has yet been found.
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Affiliation(s)
- C M Franco
- Microbiology Department, Hoechst Centre for Basic Research, Hoechst India Limited, Lal Bahadur Shastri Marg, Mulund, Bombay
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Chapter 14. Mechanism-Based Discovery of Anticancer Agents. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 1990. [DOI: 10.1016/s0065-7743(08)61590-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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