151
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Spork AP, Büschleb M, Ries O, Wiegmann D, Boettcher S, Mihalyi A, Bugg TDH, Ducho C. Lead structures for new antibacterials: stereocontrolled synthesis of a bioactive muraymycin analogue. Chemistry 2014; 20:15292-7. [PMID: 25318977 DOI: 10.1002/chem.201404775] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Indexed: 11/10/2022]
Abstract
Naturally occurring muraymycin nucleoside antibiotics represent a promising class of novel antibacterial agents. The structural complexity suggests the investigation of simplified analogues as potential lead structures, which can then be further optimized towards highly potent antimicrobials. Herein we report studies on muraymycin-derived potential lead structures lacking an aminoribose motif found in most naturally occurring muraymycins. We have identified a 5'-defunctionalized motif to be ideal in terms of stability and chemical accessibility and have synthesized a full-length muraymycin analogue based on this structure using a novel fully stereocontrolled route. The obtained 5'-deoxy analogue of the natural product muraymycin C4 showed good inhibitory properties towards the bacterial target protein MraY, sufficient pharmacokinetic stability and no cytotoxicity against human cells, thus making it a promising lead for antibacterial drug development.
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Affiliation(s)
- Anatol P Spork
- Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123 Saarbrücken (Germany); Department of Chemistry, Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstr. 2, 37077 Göttingen (Germany)
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152
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Ali I, Al-Othman ZA, Al-Warthan A, Asnin L, Chudinov A. Advances in chiral separations of small peptides by capillary electrophoresis and chromatography. J Sep Sci 2014; 37:2447-66. [DOI: 10.1002/jssc.201400587] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 06/26/2014] [Accepted: 06/27/2014] [Indexed: 01/27/2023]
Affiliation(s)
- Imran Ali
- Department of Chemistry, Jamia Millia Islamia (Central University); New Delhi India
| | - Zeid A. Al-Othman
- Department of Chemistry, College of Science; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - Abdulrahman Al-Warthan
- Department of Chemistry, College of Science; King Saud University; Riyadh Kingdom of Saudi Arabia
| | - Leonid Asnin
- Perm National Research Polytechnic University; Perm Russia
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153
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Mihalyi A, Jamshidi S, Slikas J, Bugg TDH. Identification of novel inhibitors of phospho-MurNAc-pentapeptide translocase MraY from library screening: Isoquinoline alkaloid michellamine B and xanthene dye phloxine B. Bioorg Med Chem 2014; 22:4566-71. [PMID: 25127465 DOI: 10.1016/j.bmc.2014.07.035] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/17/2014] [Accepted: 07/20/2014] [Indexed: 11/27/2022]
Abstract
The National Cancer Institute (NCI) Diversity Set was screened for potential inhibitors of phospho-MurNAc-pentapeptide translocase MraY from Escherichia coli using a primary fluorescence enhancement assay, followed by a secondary radiochemical assay. One new MraY inhibitor was identified from this screen, a naphthylisoquinoline alkaloid michellamine B, which inhibited E. coli MraY (IC50 456μM) and Bacillus subtilis MraY (IC50 386μM), and which showed antimicrobial activity against B. subtilis (MIC 16μg/mL). Following an earlier report of halogenated fluoresceins identified from a combined MraY/MurG screen, three halogenated fluoresceins were tested as inhibitors of E. coli MraY and E. coli MurG, and phloxine B was identified as an inhibitor of E. coli MraY (IC50 32μM). Molecular docking of inhibitor structures against the structure of Aquifex aeolicus MraY indicates that phloxine B appears to bind to the Mg(2+) cofactor in the enzyme active site, while michellamine B binds to a hydrophobic groove formed between transmembrane helices 5 and 9.
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Affiliation(s)
- Agnes Mihalyi
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Shirin Jamshidi
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Justinas Slikas
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Timothy D H Bugg
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
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154
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Xie Y, Cai Q, Ren H, Wang L, Xu H, Hong B, Wu L, Chen R. NRPS substrate promiscuity leads to more potent antitubercular sansanmycin analogues. JOURNAL OF NATURAL PRODUCTS 2014; 77:1744-1748. [PMID: 24964393 DOI: 10.1021/np5001494] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Sansanmycins, members of the uridyl peptide antibiotics, are assembled by nonribosomal peptide synthetases (NRPSs), the substrate promiscuity of which results in the diversity of products. Further exploration of the NRPSs' substrate promiscuity by reinvestigating sansanmycin producer strain led to the isolation and structural elucidation of eight new uridyl peptides, sansanmycins H-O (1-8). Among them, sansanmycin L, containing a 6-OH-bicyclic residue and Phe3 first found at the position AA3, exhibited activity against M. tuberculosis H37Rv with an MIC value of 2 μg/mL, 8-fold more potent than that of the major compound, sansanmycin A (MIC = 16 μg/mL).
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Affiliation(s)
- Yunying Xie
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing, People's Republic of China
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155
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Rodolis MT, Mihalyi A, O'Reilly A, Slikas J, Roper DI, Hancock REW, Bugg TDH. Identification of a Novel Inhibition Site in Translocase MraY Based upon the Site of Interaction with Lysis Protein E from Bacteriophage ϕX174. Chembiochem 2014; 15:1300-8. [DOI: 10.1002/cbic.201402064] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Indexed: 11/08/2022]
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156
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Siricilla S, Mitachi K, Skorupinska-Tudek K, Swiezewska E, Kurosu M. Biosynthesis of a water-soluble lipid I analogue and a convenient assay for translocase I. Anal Biochem 2014; 461:36-45. [PMID: 24939461 DOI: 10.1016/j.ab.2014.05.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 05/08/2014] [Accepted: 05/22/2014] [Indexed: 02/07/2023]
Abstract
Translocase I (MraY/MurX) is an essential enzyme in growth of the vast majority of bacteria that catalyzes the transformation from UDP-MurNAc-pentapeptide (Park's nucleotide) to prenyl-MurNAc-pentapeptide (lipid I), the first membrane-anchored peptidoglycan precursor. MurX has received considerable attention in the development of new tuberculosis (TB) drugs due to the fact that the MurX inhibitors kill exponentially growing Mycobacterium tuberculosis (Mtb) much faster than clinically used TB drugs. Lipid I isolated from Mtb contains the C50-prenyl unit that shows very poor water solubility; thus, this chemical characteristic of lipid I renders MurX enzyme assays impractical for screening and lacks reproducibility of the enzyme assays. We have established a scalable chemical synthesis of Park's nucleotide-N(ε)-dansylthiourea 2 that can be used as a MurX enzymatic substrate to form lipid I analogues. In our investigation of the minimum structure requirement of the prenyl phosphate in the MraY/MurX-catalyzed lipid I analogue synthesis with 2, we found that neryl phosphate (C10 phosphate) can be recognized by MraY/MurX to generate the water-soluble lipid I analogue in quantitative yield under the optimized conditions. Here, we report a rapid and robust analytical method for quantifying MraY/MurX inhibitory activity of library molecules.
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Affiliation(s)
- Shajila Siricilla
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163-0001, United States
| | - Katsuhiko Mitachi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163-0001, United States
| | - Karolina Skorupinska-Tudek
- Department of Lipid Biochemistry, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warszawa, Poland
| | - Ewa Swiezewska
- Department of Lipid Biochemistry, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warszawa, Poland
| | - Michio Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163-0001, United States
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157
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Ries O, Büschleb M, Granitzka M, Stalke D, Ducho C. Amino acid motifs in natural products: synthesis of O-acylated derivatives of (2S,3S)-3-hydroxyleucine. Beilstein J Org Chem 2014; 10:1135-42. [PMID: 24991264 PMCID: PMC4077382 DOI: 10.3762/bjoc.10.113] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 04/04/2014] [Indexed: 12/17/2022] Open
Abstract
(2S,3S)-3-Hydroxyleucine can be found in an increasing number of bioactive natural products. Within the context of our work regarding the total synthesis of muraymycin nucleoside antibiotics, we have developed a synthetic approach towards (2S,3S)-3-hydroxyleucine building blocks. Application of different protecting group patterns led to building blocks suitable for C- or N-terminal derivatization as well as for solid-phase peptide synthesis. With respect to according motifs occurring in natural products, we have converted these building blocks into 3-O-acylated structures. Utilizing an esterification and cross-metathesis protocol, (2S,3S)-3-hydroxyleucine derivatives were synthesized, thus opening up an excellent approach for the synthesis of bioactive natural products and derivatives thereof for structure activity relationship (SAR) studies.
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Affiliation(s)
- Oliver Ries
- Department of Chemistry, Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstr. 2, 37077 Göttingen, Germany
| | - Martin Büschleb
- Department of Chemistry, Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstr. 2, 37077 Göttingen, Germany
| | - Markus Granitzka
- Department of Chemistry, Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstr. 4, 37077 Göttingen, Germany
| | - Dietmar Stalke
- Department of Chemistry, Institute of Inorganic Chemistry, Georg-August-University Göttingen, Tammannstr. 4, 37077 Göttingen, Germany
| | - Christian Ducho
- Department of Chemistry, Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstr. 2, 37077 Göttingen, Germany ; Department of Pharmacy, Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany
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158
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Takeoka Y, Tanino T, Sekiguchi M, Yonezawa S, Sakagami M, Takahashi F, Togame H, Tanaka Y, Takemoto H, Ichikawa S, Matsuda A. Expansion of Antibacterial Spectrum of Muraymycins toward Pseudomonas aeruginosa. ACS Med Chem Lett 2014; 5:556-60. [PMID: 24900879 DOI: 10.1021/ml5000096] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 03/06/2014] [Indexed: 11/29/2022] Open
Abstract
It is urgent to develop novel anti-Pseudomonas agents that should also be active against multidrug resistant P. aeruginosa. Expanding the antibacterial spectrum of muraymycins toward P. aeruginosa was investigated by the systematic structure-activity relationship study. It was revealed that two functional groups, a lipophilic side chain and a guanidino group, at the accessory moiety of muraymycins were important for the anti-Pseudomonas activity, and analogue 29 exhibited antibacterial activity against a range of P. aeruginosa strains with the minimum inhibitory concentration values of 4-8 μg/mL.
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Affiliation(s)
- Yusuke Takeoka
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Tetsuya Tanino
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Mitsuaki Sekiguchi
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Shuji Yonezawa
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Masahiro Sakagami
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Fumiyo Takahashi
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Hiroko Togame
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Yoshikazu Tanaka
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Hiroshi Takemoto
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., LTD., Kita-21, Nishi-11 Kita-ku, Sapporo 001-0021, Japan
| | - Satoshi Ichikawa
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
- Center
for Research and Education on Drug Discovery, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Akira Matsuda
- Faculty
of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
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159
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Smith DRM, Willemse T, Gkotsi DS, Schepens W, Maes BUW, Ballet S, Goss RJM. The first one-pot synthesis of L-7-iodotryptophan from 7-iodoindole and serine, and an improved synthesis of other L-7-halotryptophans. Org Lett 2014; 16:2622-5. [PMID: 24805161 DOI: 10.1021/ol5007746] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A simple and scalable one-pot biotransformation enables direct access to L-halotryptophans, including L-7-iodotryptophan, from the corresponding haloindoles. The biotransformation utilizes an easy to prepare bacterial cell lysate that may be stored as the lyophilizate for several months and utilized as a catalyst as and when required.
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Affiliation(s)
- Duncan R M Smith
- School of Chemistry and BSRC, University of St. Andrews , St. Andrews, KY16 9ST, U.K
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160
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Pesic A, Steinhaus B, Kemper S, Nachtigall J, Kutzner HJ, Höfle G, Süssmuth RD. Isolation and structure elucidation of the nucleoside antibiotic strepturidin from Streptomyces albus DSM 40763. J Antibiot (Tokyo) 2014; 67:471-7. [PMID: 24594582 DOI: 10.1038/ja.2014.16] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/20/2014] [Accepted: 01/27/2014] [Indexed: 11/09/2022]
Abstract
The antibiotic strepturidin (1) was isolated from the microorganism Streptomyces albus DSM 40763, and its structure elucidated by spectroscopic methods and chemical degradation studies. The determination of the relative and absolute stereocenters was partially achieved using chiral GC/EI-MS analysis and microderivatization by acetal ring formation and subsequent 2D-NMR analysis of key (1)H,(1)H-NOESY NMR correlations and extraction of (1)H,(13)C coupling constants from (1)H,(13)C-HMBC NMR spectra. Based on these results, a biosynthesis model was proposed.
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Affiliation(s)
- Alexander Pesic
- Institut für Chemie, Technische Universität Berlin, Berlin, Germany
| | - Britta Steinhaus
- Helmholtz Zentrum für Infektionsforschung, Braunschweig, Germany
| | - Sebastian Kemper
- Institut für Chemie, Technische Universität Berlin, Berlin, Germany
| | - Jonny Nachtigall
- Institut für Chemie, Technische Universität Berlin, Berlin, Germany
| | - Hans Jürgen Kutzner
- Technische Hochschule Darmstadt, Institut für Mikrobiologie und Genetik, Darmstadt, Germany
| | - Gerhard Höfle
- Helmholtz Zentrum für Infektionsforschung, Braunschweig, Germany
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161
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Kuranaga T, Sesoko Y, Inoue M. Cu-mediated enamide formation in the total synthesis of complex peptide natural products. Nat Prod Rep 2014; 31:514-32. [PMID: 24567066 DOI: 10.1039/c3np70103d] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu-mediated C(sp(2))-N bond formation has received intense interest recently, and has been applied to the total synthesis of a wide variety of structurally complex natural products. This review covers the synthetic assembly of peptide natural products in which Cu-mediated enamide formation is the key transformation. The total syntheses of cyclopeptide alkaloids, pacidamycin D, and yaku'amide A exemplify the versatility of the Cu-catalyzed cross-coupling reaction in comparison to other synthetic methods.
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Affiliation(s)
- Takefumi Kuranaga
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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162
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Nikolaidis I, Favini-Stabile S, Dessen A. Resistance to antibiotics targeted to the bacterial cell wall. Protein Sci 2014; 23:243-59. [PMID: 24375653 DOI: 10.1002/pro.2414] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 12/21/2013] [Accepted: 12/23/2013] [Indexed: 11/10/2022]
Abstract
Peptidoglycan is the main component of the bacterial cell wall. It is a complex, three-dimensional mesh that surrounds the entire cell and is composed of strands of alternating glycan units crosslinked by short peptides. Its biosynthetic machinery has been, for the past five decades, a preferred target for the discovery of antibacterials. Synthesis of the peptidoglycan occurs sequentially within three cellular compartments (cytoplasm, membrane, and periplasm), and inhibitors of proteins that catalyze each stage have been identified, although not all are applicable for clinical use. A number of these antimicrobials, however, have been rendered inactive by resistance mechanisms. The employment of structural biology techniques has been instrumental in the understanding of such processes, as well as the development of strategies to overcome them. This review provides an overview of resistance mechanisms developed toward antibiotics that target bacterial cell wall precursors and its biosynthetic machinery. Strategies toward the development of novel inhibitors that could overcome resistance are also discussed.
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Affiliation(s)
- I Nikolaidis
- Institut de Biologie Structurale (IBS), Université Grenoble Alpes, 6 rue Jules Horowitz, 38027, Grenoble, France; Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), Grenoble, France; Centre National de la Recherche Scientifique (CNRS), UMR 5075, Grenoble, France; Bijvoet Center for Biomolecular Research, Department of Biochemistry of Membranes, Utrecht University, Utrecht, The Netherlands
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163
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Majumdar KC, Sinha B. Coinage metals (Cu, Ag and Au) in the synthesis of natural products. RSC Adv 2014. [DOI: 10.1039/c3ra44336a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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164
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Chen W, Dai D, Wang C, Huang T, Zhai L, Deng Z. Genetic dissection of the polyoxin building block-carbamoylpolyoxamic acid biosynthesis revealing the "pathway redundancy" in metabolic networks. Microb Cell Fact 2013; 12:121. [PMID: 24314013 PMCID: PMC4029187 DOI: 10.1186/1475-2859-12-121] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 11/24/2013] [Indexed: 11/17/2022] Open
Abstract
Background Polyoxin, a peptidyl nucleoside antibiotic, consists of three building blocks including a nucleoside skeleton, polyoximic acid (POIA), and carbamoylpolyoxamic acid (CPOAA), however, little is known about the “pathway redundancy” of the metabolic networks directing the CPOAA biosynthesis in the cell factories of the polyoxin producer. Results Here we report the genetic characterization of CPOAA biosynthesis with revealing a “pathway redundancy” in metabolic networks. Independent mutation of the four genes (polL-N and polP) directly resulted in the accumulation of polyoxin I, suggesting their positive roles for CPOAA biosynthesis. Moreover, the individual mutant of polN and polP also partially retains polyoxin production, suggesting the existence of the alternative homologs substituting their functional roles. Conclusions It is unveiled that argA and argB in L-arginine biosynthetic pathway contributed to the “pathway redundancy”, more interestingly, argB in S. cacaoi is indispensible for both polyoxin production and L-arginine biosynthesis. These data should provide an example for the research on the “pathway redundancy” in metabolic networks, and lay a solid foundation for targeted enhancement of polyoxin production with synthetic biology strategies.
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Affiliation(s)
| | | | | | | | | | - Zixin Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, and School of Pharmaceutical Sciences, Wuhan University, 185 East Lake Road, Wuhan 430071, P,R, China.
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165
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Funabashi M, Baba S, Takatsu T, Kizuka M, Ohata Y, Tanaka M, Nonaka K, Spork AP, Ducho C, Chen WCL, Van Lanen SG. Structure-based gene targeting discovery of sphaerimicin, a bacterial translocase I inhibitor. Angew Chem Int Ed Engl 2013; 52:11607-11. [PMID: 24014169 PMCID: PMC3873198 DOI: 10.1002/anie.201305546] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Indexed: 12/27/2022]
Abstract
Rise and shine: Using a gene-targeting approach aimed at identifying potential L-threonine:uridine-5'-transaldolases that catalyze the formation of (5'S,6'S)-C-glycyluridine, a new bacterial translocase I inhibitor was discovered from an actinomycete following fermentation optimization.
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Affiliation(s)
- Masanori Funabashi
- Natural Product Research Group, Discovery Science and Technology Department, Drug Discovery and Biomedical Technology Unit, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630 (Japan)
| | - Satoshi Baba
- New Modality Research Laboratories, R&D Division, Daiichi Sankyo Co., Ltd., Tokyo 140-8710 (Japan)
| | - Toshio Takatsu
- Analytical Chemistry Research Group, Center for Pharmaceutical and Biomedical Analysis, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630 (Japan)
| | - Masaaki Kizuka
- Natural Product Research Group, Discovery Science and Technology Department, Drug Discovery and Biomedical Technology Unit, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630 (Japan)
| | - Yasuo Ohata
- Analytical Chemistry Research Group, Center for Pharmaceutical and Biomedical Analysis, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630 (Japan)
| | - Masahiro Tanaka
- Natural Product Research Group, Discovery Science and Technology Department, Drug Discovery and Biomedical Technology Unit, Daiichi Sankyo RD Novare Co., Ltd., Tokyo 134-8630 (Japan)
| | - Koichi Nonaka
- Biologics Technology Research Laboratories, R&D Division, Daiichi Sankyo Co., Ltd., Gunma 370-0503 (Japan)
| | - Anatol P Spork
- Department of Chemistry, University of Paderborn, Paderborn 33098 (Germany)
| | - Christian Ducho
- Department of Chemistry, University of Paderborn, Paderborn 33098 (Germany)
| | - Wei-Chen Leyla Chen
- Department of Pharmaceutical Sciences College of Pharmacy, University of Kentucky 789 S. Limestone Street, Lexington, KY 40536 (USA)
| | - Steven G Van Lanen
- Department of Pharmaceutical Sciences College of Pharmacy, University of Kentucky 789 S. Limestone Street, Lexington, KY 40536 (USA)
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166
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Biodegradation of the allelopathic chemical m-tyrosine by Bacillus aquimaris SSC5 involves the homogentisate central pathway. PLoS One 2013; 8:e75928. [PMID: 24098407 PMCID: PMC3788032 DOI: 10.1371/journal.pone.0075928] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 08/23/2013] [Indexed: 11/30/2022] Open
Abstract
m-Tyrosine is an amino acid analogue, exuded from the roots of fescue grasses, which acts as a potent allelopathic and a broad spectrum herbicidal chemical. Although the production and toxic effects of m-tyrosine are known, its microbial degradation has not been documented yet. A soil microcosm study showed efficient degradation of m-tyrosine by the inhabitant microorganisms. A bacterial strain designated SSC5, that was able to utilize m-tyrosine as the sole source of carbon, nitrogen, and energy, was isolated from the soil microcosm and was characterized as Bacillus aquimaris. Analytical methods such as HPLC, GC-MS, and 1H-NMR performed on the resting cell samples identified the formation of 3-hydroxyphenylpyruvate (3-OH-PPA), 3-hydroxyphenylacetate (3-OH-PhAc), and homogentisate (HMG) as major intermediates in the m-tyrosine degradation pathway. Enzymatic assays carried out on cell-free lysates of m-tyrosine-induced cells confirmed transamination reaction as the first step of m-tyrosine degradation. The intermediate 3-OH-PhAc thus obtained was further funneled into the HMG central pathway as revealed by a hydroxylase enzyme assay. Subsequent degradation of HMG occurred by ring cleavage catalyzed by the enzyme homogentisate 1, 2-dioxygenase. This study has significant implications in terms of understanding the environmental fate of m-tyrosine as well as regulation of its phytotoxic effect by soil microorganisms.
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167
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Fer MJ, Olatunji S, Bouhss A, Calvet-Vitale S, Gravier-Pelletier C. Toward Analogues of MraY Natural Inhibitors: Synthesis of 5′-Triazole-Substituted-Aminoribosyl Uridines Through a Cu-Catalyzed Azide–Alkyne Cycloaddition. J Org Chem 2013; 78:10088-105. [DOI: 10.1021/jo4014035] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mickaël J. Fer
- Laboratoire de
Chimie et Biochimie Pharmacologiques et Toxicologiques, Université Paris Descartes, UMR 8601 CNRS, 45 rue des Saints Pères, 75006 Paris, France
| | - Samir Olatunji
- Laboratoire
des
Enveloppes Bactériennes et Antibiotiques, Institut de Biochimie
et Biophysique Moléculaire et Cellulaire, Université Paris-Sud 11, UMR 8619 CNRS, Orsay F-91405, France
| | - Ahmed Bouhss
- Laboratoire
des
Enveloppes Bactériennes et Antibiotiques, Institut de Biochimie
et Biophysique Moléculaire et Cellulaire, Université Paris-Sud 11, UMR 8619 CNRS, Orsay F-91405, France
| | - Sandrine Calvet-Vitale
- Laboratoire de
Chimie et Biochimie Pharmacologiques et Toxicologiques, Université Paris Descartes, UMR 8601 CNRS, 45 rue des Saints Pères, 75006 Paris, France
| | - Christine Gravier-Pelletier
- Laboratoire de
Chimie et Biochimie Pharmacologiques et Toxicologiques, Université Paris Descartes, UMR 8601 CNRS, 45 rue des Saints Pères, 75006 Paris, France
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168
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169
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Tang X, Gross M, Xie Y, Kulik A, Gust B. Identification of Mureidomycin Analogues and Functional Analysis of an N-Acetyltransferase in Napsamycin Biosynthesis. Chembiochem 2013; 14:2248-55. [DOI: 10.1002/cbic.201300287] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Indexed: 11/05/2022]
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170
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Chung BC, Zhao J, Gillespie RA, Kwon DY, Guan Z, Hong J, Zhou P, Lee SY. Crystal structure of MraY, an essential membrane enzyme for bacterial cell wall synthesis. Science 2013; 341:1012-1016. [PMID: 23990562 DOI: 10.1126/science.1236501] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
MraY (phospho-MurNAc-pentapeptide translocase) is an integral membrane enzyme that catalyzes an essential step of bacterial cell wall biosynthesis: the transfer of the peptidoglycan precursor phospho-MurNAc-pentapeptide to the lipid carrier undecaprenyl phosphate. MraY has long been considered a promising target for the development of antibiotics, but the lack of a structure has hindered mechanistic understanding of this critical enzyme and the enzyme superfamily in general. The superfamily includes enzymes involved in bacterial lipopolysaccharide/teichoic acid formation and eukaryotic N-linked glycosylation, modifications that are central in many biological processes. We present the crystal structure of MraY from Aquifex aeolicus (MraYAA) at 3.3 Å resolution, which allows us to visualize the overall architecture, locate Mg(2+) within the active site, and provide a structural basis of catalysis for this class of enzyme.
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Affiliation(s)
- Ben C Chung
- Department of Biochemistry, Duke University Medical Center, 2 Genome Ct, Durham, NC 27710, USA
| | - Jinshi Zhao
- Department of Biochemistry, Duke University Medical Center, 2 Genome Ct, Durham, NC 27710, USA
| | - Robert A Gillespie
- Department of Biochemistry, Duke University Medical Center, 2 Genome Ct, Durham, NC 27710, USA
| | - Do-Yeon Kwon
- Department of Chemistry, Duke University, Durham, NC 27708, USA
| | - Ziqiang Guan
- Department of Biochemistry, Duke University Medical Center, 2 Genome Ct, Durham, NC 27710, USA
| | - Jiyong Hong
- Department of Chemistry, Duke University, Durham, NC 27708, USA.,Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA
| | - Pei Zhou
- Department of Biochemistry, Duke University Medical Center, 2 Genome Ct, Durham, NC 27710, USA.,Department of Chemistry, Duke University, Durham, NC 27708, USA
| | - Seok-Yong Lee
- Department of Biochemistry, Duke University Medical Center, 2 Genome Ct, Durham, NC 27710, USA
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171
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Funabashi M, Baba S, Takatsu T, Kizuka M, Ohata Y, Tanaka M, Nonaka K, Spork AP, Ducho C, Chen WCL, Van Lanen SG. Structure-Based Gene Targeting Discovery of Sphaerimicin, a Bacterial Translocase I Inhibitor. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201305546] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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172
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Shepherd J, Ibba M. Direction of aminoacylated transfer RNAs into antibiotic synthesis and peptidoglycan-mediated antibiotic resistance. FEBS Lett 2013; 587:2895-904. [PMID: 23907010 DOI: 10.1016/j.febslet.2013.07.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Accepted: 07/17/2013] [Indexed: 12/30/2022]
Abstract
Prokaryotic aminoacylated-transfer RNAs often need to be efficiently segregated between translation and other cellular biosynthetic pathways. Many clinically relevant bacteria, including Streptococcus pneumoniae, Staphylococcus aureus, Enterococcus faecalis and Pseudomonas aeruginosa direct some aminoacylated-tRNA species into peptidoglycan biosynthesis and/or membrane phospholipid modification. Subsequent indirect peptidoglycan cross-linkage or change in membrane permeability is often a prerequisite for high-level antibiotic resistance. In Streptomycetes, aminoacylated-tRNA species are used for antibiotic synthesis as well as antibiotic resistance. The direction of coding aminoacylated-tRNA molecules away from translation and into antibiotic resistance and synthesis pathways are discussed in this review.
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Affiliation(s)
- Jennifer Shepherd
- Department of Microbiology and Center for RNA Biology, Ohio State University, Columbus, OH 43210-1292, USA
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173
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Kurosu M, Siricilla S, Mitachi K. Advances in MRSA drug discovery: where are we and where do we need to be? Expert Opin Drug Discov 2013; 8:1095-116. [PMID: 23829425 DOI: 10.1517/17460441.2013.807246] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Methicillin-resistant Staphylococcus aureus (MRSA) have been on the increase during the past decade, due to the steady growth of the elderly and immunocompromised patients, and the emergence of multidrug-resistant (MDR) bacterial strains. Although there are a limited number of anti-MRSA drugs available, a number of different combination antimicrobial drug regimens have been used to treat serious MRSA infections. Thus, the addition of several new antistaphylococcal drugs into clinical practice should broaden clinician's therapeutic options. As MRSA is one of the most common and problematic bacteria associated with increasing antimicrobial resistance, continuous efforts for the discovery of lead compounds as well as development of alternative therapies and faster diagnostics are required. AREAS COVERED This article summarizes the FDA-approved drugs to treat MRSA infections, the drugs in clinical trials, and the drug leads for MRSA and related Gram-positive bacterial infections. In addition, the article discusses the mode of action of antistaphylococcal molecules and the resistant mechanisms of some molecules. EXPERT OPINION The number of pipeline drugs presently undergoing clinical trials is not particularly encouraging. There are limited and rather expensive therapeutic options for MRSA infections in the critically ill. Further research efforts are required for effective phage therapy on MRSA infections in clinical use, which seem to be attractive therapeutic options for the future.
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Affiliation(s)
- Michio Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee, 881 Madison Avenue, Memphis, TN 38163, USA.
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174
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Lin CI, McCarty RM, Liu HW. The biosynthesis of nitrogen-, sulfur-, and high-carbon chain-containing sugars. Chem Soc Rev 2013; 42:4377-407. [PMID: 23348524 PMCID: PMC3641179 DOI: 10.1039/c2cs35438a] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Carbohydrates serve many structural and functional roles in biology. While the majority of monosaccharides are characterized by the chemical composition (CH2O)n, modifications including deoxygenation, C-alkylation, amination, O- and N-methylation, which are characteristic of many sugar appendages of secondary metabolites, are not uncommon. Interestingly, some sugar molecules are formed via modifications including amine oxidation, sulfur incorporation, and "high-carbon" chain attachment. Most of these unusual sugars have been identified over the past several decades as components of microbially produced natural products, although a few high-carbon sugars are also found in the lipooligosaccharides of the outer cell walls of Gram-negative bacteria. Despite their broad distribution in nature, these sugars are considered "rare" due to their relative scarcity. The biosynthetic steps that underlie their formation continue to perplex researchers to this day and many questions regarding key transformations remain unanswered. This review will focus on our current understanding of the biosynthesis of unusual sugars bearing oxidized amine substituents, thio-functional groups, and high-carbon chains.
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Affiliation(s)
| | | | - Hung-wen Liu
- Division of Medicinal Chemistry, College of Pharmacy, and Department of Chemistry and Biochemistry, University of Texas, Austin, TX 78712
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175
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Paritala H, Suzuki Y, Carroll KS. Efficient microwave-assisted solid phase coupling of nucleosides, small library generation and mild conditions for release of nucleoside derivatives. Tetrahedron Lett 2013; 54:1869-1872. [PMID: 23794759 DOI: 10.1016/j.tetlet.2013.01.109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Nucleosides are essential bio-molecules that participate in a wide array of biological processes involved in maintaining physiologic homeostasis. Recent efforts geared towards the synthesis of nucleoside analogues and development of nucleoside combinatorial libraries using solid phase synthesis has contributed invaluable information towards drug design and development. These studies have provided information concerning the structural requirements of substrate binding pockets of enzymes and evaluation of enzyme kinetics. However, the synthesis of nucleosides and its corresponding analogues remains a challenging and time consuming process. Herein, we report an efficient, microwave assisted solid phase coupling of nucleosides, combinatorial chemistry on the coupled nucleosides to generate small library and mild cleavage conditions to release nucleoside derivatives from its solid support. We anticipate these findings will accelerate the development of synthetic methods or combinatorial library design of nucleoside analogues in similar settings.
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176
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SsaA, a member of a novel class of transcriptional regulators, controls sansanmycin production in Streptomyces sp. strain SS through a feedback mechanism. J Bacteriol 2013; 195:2232-43. [PMID: 23475969 DOI: 10.1128/jb.00054-13] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Sansanmycins, produced by Streptomyces sp. strain SS, are uridyl peptide antibiotics with activities against Pseudomonas aeruginosa and multidrug-resistant Mycobacterium tuberculosis. In this work, the biosynthetic gene cluster of sansanmycins, comprised of 25 open reading frames (ORFs) showing considerable amino acid sequence identity to those of the pacidamycin and napsamycin gene cluster, was identified. SsaA, the archetype of a novel class of transcriptional regulators, was characterized in the sansanmycin gene cluster, with an N-terminal fork head-associated (FHA) domain and a C-terminal LuxR-type helix-turn-helix (HTH) motif. The disruption of ssaA abolished sansanmycin production, as well as the expression of the structural genes for sansanmycin biosynthesis, indicating that SsaA is a pivotal activator for sansanmycin biosynthesis. SsaA was proved to directly bind several putative promoter regions of biosynthetic genes, and comparison of sequences of the binding sites allowed the identification of a consensus SsaA binding sequence, GTMCTGACAN₂TGTCAGKAC. The DNA binding activity of SsaA was inhibited by sansanmycins A and H in a concentration-dependent manner. Furthermore, sansanmycins A and H were found to directly interact with SsaA. These results indicated that SsaA strictly controls the production of sansanmycins at the transcriptional level in a feedback regulatory mechanism by sensing the accumulation of the end products. As the first characterized regulator of uridyl peptide antibiotic biosynthesis, the understanding of this autoregulatory process involved in sansanmycin biosynthesis will likely provide an effective strategy for rational improvements in the yields of these uridyl peptide antibiotics.
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177
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Draft genome sequence of Streptomyces sp. strain SS, which produces a series of uridyl peptide antibiotic sansanmycins. J Bacteriol 2013; 194:6988-9. [PMID: 23209237 DOI: 10.1128/jb.01916-12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Streptomyces sp. SS produces a series of uridyl peptide antibiotic sansanmycins. Here, we present a draft genome sequence of Streptomyces sp. SS containing the biosynthetic gene cluster for the antibiotics. The identification of the biosynthetic gene cluster of sansanmycins may provide further insight into biosynthetic mechanisms for uridyl peptide antibiotics.
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178
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Polyoxin and nikkomycin analogs: recent design and synthesis of novel peptidyl nucleosides. HETEROCYCL COMMUN 2013. [DOI: 10.1515/hc-2013-0141] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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179
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Abstract
The synthesis of the bacterial peptidoglycan has been recognized for over 50 years as fertile ground for antibacterial discovery. Initially, empirical screening of natural products for inhibition of bacterial growth detected many chemical classes of antibiotics whose specific mechanisms of action were eventually dissected and defined. Of the nontoxic antibiotics discovered, most were found to be inhibitors of either protein synthesis or cell wall synthesis, which led to more directed screening for inhibitors of these pathways. Directed screening and design programs for cell wall inhibitors have been undertaken since the 1960s. In that time it has become clear that, while certain steps and intermediates have yielded selective inhibitors and are established targets, other potential targets have not yielded inhibitors whose antibacterial activity is proven to be solely due to that inhibition. Why has this search been so problematic? Are the established targets still worth pursuing? This review will attempt to answer these and other questions and evaluate the viability of targets related to peptidoglycan synthesis.
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Affiliation(s)
- Lynn L Silver
- LL Silver Consulting, LLC, Springfield, New Jersey 07081, USA.
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180
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Barnard-Britson S, Chi X, Nonaka K, Spork AP, Tibrewal N, Goswami A, Pahari P, Ducho C, Rohr J, Van Lanen SG. Amalgamation of nucleosides and amino acids in antibiotic biosynthesis: discovery of an L-threonine:uridine-5'-aldehyde transaldolase. J Am Chem Soc 2012; 134:18514-7. [PMID: 23110675 DOI: 10.1021/ja308185q] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The lipopeptidyl nucleoside antibiotics represented by A-90289, caprazamycin, and muraymycin are structurally highlighted by a nucleoside core that contains a nonproteinogenic β-hydroxy-α-amino acid named 5'-C-glycyluridine (GlyU). Bioinformatic analysis of the biosynthetic gene clusters revealed a shared open reading frame encoding a protein with sequence similarity to serine hydroxymethyltransferases, resulting in the proposal that this shared enzyme catalyzes an aldol-type condensation with glycine and uridine-5'-aldehyde to furnish GlyU. Using LipK involved in A-90289 biosynthesis as a model, we now functionally assign and characterize the enzyme responsible for the C-C bond-forming event during GlyU biosynthesis as an l-threonine:uridine-5'-aldehyde transaldolase. Biochemical analysis revealed this transformation is dependent upon pyridoxal-5'-phosphate, the enzyme has no activity with alternative amino acids, such as glycine or serine, as aldol donors, and acetaldehyde is a coproduct. Structural characterization of the enzyme product is consistent with stereochemical assignment as the threo diastereomer (5'S,6'S)-GlyU. Thus this enzyme orchestrates C-C bond breaking and formation with concomitant installation of two stereocenters to make a new l-α-amino acid with a nucleoside side chain.
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Affiliation(s)
- Sandra Barnard-Britson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, 40536, United States
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181
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Chi X, Baba S, Tibrewal N, Funabashi M, Nonaka K, Van Lanen SG. The muraminomicin biosynthetic gene cluster and enzymatic formation of the 2-deoxyaminoribosyl appendage. MEDCHEMCOMM 2012; 4:239-243. [PMID: 23476724 DOI: 10.1039/c2md20245j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Muraminomicin is a lipopeptidyl nucleoside antibiotic produced by Streptosporangium amethystogenes SANK 60709. Similar to several members of this antibiotic family such as A-90289 and muraymycin, the structure of muraminomicin consists of a disaccharide comprised of two modified ribofuranose units linked by an O-β(1 → 5) glycosidic bond; however, muraminomicin holds the distinction in that both ribose units are 2-deoxy sugars. The biosynthetic gene cluster of muraminomicin has been identified, cloned and sequenced, and bioinformatic analysis revealed a minimum of 24 open reading frames putatively involved in the biosynthesis, resistance, and regulation of muraminomicin. Fives enzymes are likely involved in the assembly and attachment of the 2,5-dideoxy-5-aminoribose saccharide unit, and two are now functionally assigned and characterized: Mra20, a 5'-amino-2',5'-dideoxyuridine phosphorylase and Mra23, a UTP:5-amino-2,5-dideoxy-α-D-ribose-1-phosphate uridylyltransferase. The cumulative results are consistent with the incorporation of the ribosyl appendage of muraminomicin via the archetypical sugar biosynthetic pathway that parallels A-90289 biosynthesis, and the specificity for this appendage is dictated primarily by the two characterized enzymes.
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Affiliation(s)
- Xiuling Chi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536, United States
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182
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Tromans DR, Stevenson CEM, Goss RJM, Lawson DM. Crystallization and preliminary X-ray analysis of Pac17 from the pacidamycin-biosynthetic cluster of Streptomyces coeruleorubidus. Acta Crystallogr Sect F Struct Biol Cryst Commun 2012; 68:971-4. [PMID: 22869135 PMCID: PMC3412786 DOI: 10.1107/s1744309112029144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 06/26/2012] [Indexed: 11/10/2022]
Abstract
Pac17 is an uncharacterized protein from the pacidamycin gene cluster of the soil bacterium Streptomyces coeruleorubidus. It is implicated in the biosynthesis of the core diaminobutyric acid residue of the antibiotic, although its precise role is uncertain at present. Given that pacidamycins inhibit translocase I of Pseudomonas aeruginosa, a clinically unexploited antibiotic target, they offer new hope in the search for antibacterial agents directed against this important pathogen. Crystals of Pac17 were grown by vapour diffusion and X-ray data were collected at a synchrotron to a resolution of 1.9 Å from a single crystal. The crystal belonged to space group C2, with unit-cell parameters a = 214.12, b = 70.88, c = 142.22 Å, β = 92.96°. Preliminary analysis of these data suggests that the asymmetric unit consists of one Pac17 homotetramer, with an estimated solvent content of 49.0%.
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Affiliation(s)
- Daniel R Tromans
- Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, England
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183
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Aleiwi BA, Kurosu M. A reliable Pd-mediated hydrogenolytic deprotection of BOM group of uridine ureido nitrogen. Tetrahedron Lett 2012; 53:3758-3762. [PMID: 22711944 PMCID: PMC3375701 DOI: 10.1016/j.tetlet.2012.05.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The benzyloxymethyl (BOM) group has been utilized widely in syntheses of a variety of natural and non-natural products. The BOM group is also one of few choices to protect uridine ureido nitrongen. However, hydrogenolytic cleavage of the BOM group of uridine derivatives has been unrealizably performed via heterogeneous conditions using Pd catalysts. One of the undesirable by-products formed by Pd-mediated hydrogenation conditions is the over-reduced product of which the C5-C6 double bond of the uracil moiety was saturated. To date, we have generated a wide range of uridine-containing antibacterial agents, where the BOM group has been utilized in their syntheses. In screening of deprotection conditions of the BOM group of uridine ureido nitrogen under Pd-mediated hydrogenation conditions, we realized that the addition of water to the (i)PrOH-based hydrogenation conditions can suppress the formation of over-reduced uridine derivatives and the addition of HCO(2)H (0.5%) dramatically improve the reaction rate. An optimized hydrogenation condition described here can be applicable to the BOM-deprotections of a wide range of uridine derivatives.
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Affiliation(s)
- Bilal A. Aleiwi
- Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison, Memphis, TN 38163, USA
| | - Michio Kurosu
- Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison, Memphis, TN 38163, USA
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184
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Zhai L, Lin S, Qu D, Hong X, Bai L, Chen W, Deng Z. Engineering of an industrial polyoxin producer for the rational production of hybrid peptidyl nucleoside antibiotics. Metab Eng 2012; 14:388-93. [DOI: 10.1016/j.ymben.2012.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 03/05/2012] [Accepted: 03/15/2012] [Indexed: 10/28/2022]
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185
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Goss RJM, Shankar S, Fayad AA. The generation of "unnatural" products: synthetic biology meets synthetic chemistry. Nat Prod Rep 2012; 29:870-89. [PMID: 22744619 DOI: 10.1039/c2np00001f] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Natural product analogue generation is important, providing tools for chemical biology, enabling structure activity relationship determination and insight into the way in which natural products interact with their target biomolecules. The generation of analogues is also often necessary in order to improve bioavailability and to fine tune compounds' activity. This review provides an overview of the catalogue of approaches available for accessing series of analogues. Over the last few years there have been major advances in genome sequencing and the development of tools for biosynthetic pathway engineering; it is therefore becoming increasingly easy to combine molecular biology and synthetic organic chemistry in order to enable expeditious access to series of natural products. This review outlines the various ways of combining biology and chemistry that have been applied to analogue generation, drawing upon a series of examples to illustrate each approach.
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Affiliation(s)
- Rebecca J M Goss
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, UKNR4 7TJ
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186
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Abstract
The 1,2-diamine moiety is a ubiquitous structural motif present in a wealth of natural products, including non-proteinogenic amino acids and numerous alkaloids, as well as in pharmaceutical agents, chiral ligands and organic reagents. The biological activity associated with many of these systems and their chemical utility in general has ensured that the development of methods for their preparation is of critical importance. While a wide range of strategies for the preparation of 1,2-diamines have been established, the diamination of alkenes offers a particularly direct and efficient means of accessing these systems. The purpose of this review is to provide an overview of all methods of direct alkene diamination, metal-mediated or otherwise.
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Affiliation(s)
- Sam de Jong
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL, 60607-7061 USA
| | - Daniel G. Nosal
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL, 60607-7061 USA
| | - Duncan J. Wardrop
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, IL, 60607-7061 USA
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187
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Synthesis of pacidamycin analogues via an Ugi-multicomponent reaction. Bioorg Med Chem Lett 2012; 22:4810-5. [PMID: 22677318 DOI: 10.1016/j.bmcl.2012.05.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 05/09/2012] [Accepted: 05/11/2012] [Indexed: 11/22/2022]
Abstract
The second-generation synthesis of 3'-hydroxypacidamycin D (2) has been accomplished via an Ugi-four component reaction at a late stage of the synthesis. This approach provided ready access to a range of analogues including diastereomers of the diaminobutylic acid residue and hybrid-type analogues of mureidomycins. Biological evaluations of these analogues indicated that the stereochemistry at the diaminobutylic acid residue has a crucial impact on both the MraY biochemical inhibition and whole-cell antibacterial activity.
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188
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Huang T, Rehak L, Jander G. meta-Tyrosine in Festuca rubra ssp. commutata (Chewings fescue) is synthesized by hydroxylation of phenylalanine. PHYTOCHEMISTRY 2012; 75:60-6. [PMID: 22192329 DOI: 10.1016/j.phytochem.2011.09.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 08/11/2011] [Accepted: 09/05/2011] [Indexed: 05/18/2023]
Abstract
m-Tyrosine is a non-protein amino acid that is structurally similar to the common protein amino acids p-tyrosine and phenylalanine. Copious amounts of m-tyrosine can be found in root exudates of the fine fescue cultivar, Festuca rubra L. ssp. commutata (Chewings fescue). The phytotoxicity of m-tyrosine may contribute to the allelopathic potential of F. rubra. m-Tyrosine in Euphorbia myrsinites (donkey-tail spurge), was previously shown to be synthesized via transamination of m-hydroxyphenylpyruvate. Here we show that m-tyrosine biosynthesis in F. rubra occurs through direct hydroxylation of phenylalanine in the root tips, perhaps through the activity of a cytochrome P450 enzyme. Hence, E. myrsinites and F. rubra, the only two plant species known to produce m-tyrosine, use distinct biosynthetic pathways that likely arose independently in evolutionary history.
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Affiliation(s)
- Tengfang Huang
- Boyce Thompson Institute for Plant Research, 1 Tower Road, Ithaca, NY 14853, USA
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189
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van der Peet P, Ralton JE, McConville MJ, Williams SJ. Discovery of inhibitors of Leishmania β-1,2-mannosyltransferases using a click-chemistry-derived guanosine monophosphate library. PLoS One 2012; 7:e32642. [PMID: 22393429 PMCID: PMC3290622 DOI: 10.1371/journal.pone.0032642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 01/28/2012] [Indexed: 12/20/2022] Open
Abstract
Leishmania spp. are a medically important group of protozoan parasites that synthesize a novel intracellular carbohydrate reserve polymer termed mannogen. Mannogen is a soluble homopolymer of β-1,2-linked mannose residues that accumulates in the major pathogenic stages in the sandfly vector and mammalian host. While several steps in mannogen biosynthesis have been defined, none of the enzymes have been isolated or characterized. We report the development of a simple assay for the GDP-mannose–dependent β-1,2-mannosyltransferases involved in mannogen synthesis. This assay utilizes octyl α-d-mannopyranoside to prime the formation of short mannogen oligomers up to 5 mannose residues. This assay was used to screen a focussed library of 44 GMP-triazole adducts for inhibitors. Several compounds provided effective inhibition of mannogen β-1,2-mannosyltransferases in a cell-free membrane preparation. This assay and inhibitor compounds will be useful for dissecting the role of different mannosyltransferases in regulating de novo biosynthesis and elongation reactions in mannogen metabolism.
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Affiliation(s)
- Phillip van der Peet
- School of Chemistry, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Julie E. Ralton
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Malcolm J. McConville
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
- * E-mail: (MJM); (SJW)
| | - Spencer J. Williams
- School of Chemistry, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
- * E-mail: (MJM); (SJW)
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190
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Abstract
In light of the biological importance of carbohydrates and their role when present in antibiotic agents, the design and synthesis of carbohydrate-based antibiotics has occupied a prominent place in drug discovery. This review focuses on synthetic carbohydrate antimicrobial agents, giving special emphasis to novel structures easily accessible from readily available carbohydrate precursors.
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191
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Shapiro AB, Jahić H, Gao N, Hajec L, Rivin O. A High-Throughput, Homogeneous, Fluorescence Resonance Energy Transfer-Based Assay for Phospho-N-acetylmuramoyl-pentapeptide Translocase (MraY). ACTA ACUST UNITED AC 2012; 17:662-72. [DOI: 10.1177/1087057112436885] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Peptidoglycan biosynthesis is an essential process in bacteria and is therefore a suitable target for the discovery of new antibacterial drugs. One of the last cytoplasmic steps of peptidoglycan biosynthesis is catalyzed by the integral membrane protein MraY, which attaches soluble UDP- N-acetylmuramoyl-pentapeptide to the membrane-bound acceptor undecaprenyl phosphate. Although several natural product–derived inhibitors of MraY are known, none have the properties necessary to be of clinical use as antibacterial drugs. Here we describe a novel, homogeneous, fluorescence resonance energy transfer–based MraY assay that is suitable for high-throughput screening for novel MraY inhibitors. The assay allows for continuous measurement, or it can be quenched prior to measurement.
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Affiliation(s)
| | - Haris Jahić
- AstraZeneca R&D Boston, Waltham, Massachusetts, USA
| | - Ning Gao
- AstraZeneca R&D Boston, Waltham, Massachusetts, USA
| | - Laurel Hajec
- AstraZeneca R&D Boston, Waltham, Massachusetts, USA
| | - Olga Rivin
- AstraZeneca R&D Boston, Waltham, Massachusetts, USA
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192
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Sarabia F, Vivar-García C, García-Ruiz C, Martín-Ortiz L, Romero-Carrasco A. Exploring the Chemistry of Epoxy Amides for the Synthesis of the 2′′-epi-Diazepanone Core of Liposidomycins and Caprazamycins. J Org Chem 2012; 77:1328-39. [DOI: 10.1021/jo202061t] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francisco Sarabia
- Department of Organic Chemistry, Faculty
of Sciences, University of Malaga, 29071
Malaga, Spain
| | - Carlos Vivar-García
- Department of Organic Chemistry, Faculty
of Sciences, University of Malaga, 29071
Malaga, Spain
| | - Cristina García-Ruiz
- Department of Organic Chemistry, Faculty
of Sciences, University of Malaga, 29071
Malaga, Spain
| | - Laura Martín-Ortiz
- Department of Organic Chemistry, Faculty
of Sciences, University of Malaga, 29071
Malaga, Spain
| | - Antonio Romero-Carrasco
- Department of Organic Chemistry, Faculty
of Sciences, University of Malaga, 29071
Malaga, Spain
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193
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Okamoto K, Sakagami M, Feng F, Togame H, Takemoto H, Ichikawa S, Matsuda A. Total Synthesis and Biological Evaluation of Pacidamycin D and Its 3′-Hydroxy Analogue. J Org Chem 2012; 77:1367-77. [DOI: 10.1021/jo202159q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazuya Okamoto
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., Ltd., Kita-21 Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Masahiro Sakagami
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., Ltd., Kita-21 Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Fei Feng
- Faculty of Advanced Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo,
001-0021, Japan
| | - Hiroko Togame
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., Ltd., Kita-21 Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Hiroshi Takemoto
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., Ltd., Kita-21 Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Satoshi Ichikawa
- Faculty of Pharmaceutical
Sciences, Hokkaido University, Kita-12,
Nishi-6, Kita-ku, Sapporo
060-0812, Japan
| | - Akira Matsuda
- Faculty of Pharmaceutical
Sciences, Hokkaido University, Kita-12,
Nishi-6, Kita-ku, Sapporo
060-0812, Japan
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194
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Hao H, Cheng G, Dai M, Wu Q, Yuan Z. Inhibitors targeting on cell wall biosynthesis pathway of MRSA. MOLECULAR BIOSYSTEMS 2012; 8:2828-38. [DOI: 10.1039/c2mb25188d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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195
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Kirst HA. Recent derivatives from smaller classes of fermentation-derived antibacterials. Expert Opin Ther Pat 2011; 22:15-35. [DOI: 10.1517/13543776.2012.642370] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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196
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van der Linden WA, Willems LI, Shabaneh TB, Li N, Ruben M, Florea BI, van der Marel GA, Kaiser M, Kisselev AF, Overkleeft HS. Discovery of a potent and highly β1 specific proteasome inhibitor from a focused library of urea-containing peptide vinyl sulfones and peptide epoxyketones. Org Biomol Chem 2011; 10:181-94. [PMID: 22105930 DOI: 10.1039/c1ob06554h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Syringolins, a class of natural products, potently and selectively inhibit the proteasome and show promising antitumour activity. To gain insight in the mode of action of syringolins, the ureido structural element present in syringolins is incorporated in oligopeptide vinyl sulfones and peptide epoxyketones yielding a focused library of potent new proteasome inhibitors. The distance of the ureido linkage with respect to the electrophilic trap strongly influences subunit selectivity within the proteasome. Compounds 13 and 15 are β5 selective and their potency exceeds that of syringolin A. In contrast, 5 may well be the most potent β1 selective compound active in living cells reported to date.
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197
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Spork AP, Wiegmann D, Granitzka M, Stalke D, Ducho C. Stereoselective synthesis of uridine-derived nucleosyl amino acids. J Org Chem 2011; 76:10083-98. [PMID: 22059552 DOI: 10.1021/jo201935w] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Novel hybrid structures of 5'-deoxyuridine and glycine were conceived and synthesized. Such nucleosyl amino acids (NAAs) represent simplified analogues of the core structure of muraymycin nucleoside antibiotics, making them useful synthetic building blocks for structure-activity relationship (SAR) studies. The key step of the developed synthetic route was the efficient and highly diastereoselective asymmetric hydrogenation of didehydro amino acid precursors toward protected NAAs. It was anticipated that the synthesis of unprotected muraymycin derivatives via this route would require a suitable intermediate protecting group at the N-3 of the uracil base. After initial attempts using PMB- and BOM-N-3 protection, both of which resulted in problematic deprotection steps, an N-3 protecting group-free route was envisaged. In spite of the pronounced acidity of the uracil-3-NH, this route worked equally efficient and with identical stereoselectivities as the initial strategies involving N-3 protection. The obtained NAA building blocks were employed for the synthesis of truncated 5'-deoxymuraymycin analogues.
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Affiliation(s)
- Anatol P Spork
- Department of Chemistry, Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Tammannstr. 2, 37 077 Göttingen, Germany
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198
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Tanino T, Al-Dabbagh B, Mengin-Lecreulx D, Bouhss A, Oyama H, Ichikawa S, Matsuda A. Mechanistic Analysis of Muraymycin Analogues: A Guide to the Design of MraY Inhibitors. J Med Chem 2011; 54:8421-39. [DOI: 10.1021/jm200906r] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tetsuya Tanino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo
060-0812, Japan
| | - Bayan Al-Dabbagh
- Laboratoire
des Enveloppes Bactériennes
et Antibiotiques, Institut de Biochimie et Biophysique Moléculaire
et Cellulaire, UMR 8619 CNRS, Université Paris-Sud, Bâtiment 430, Orsay F-91405, France
| | - Dominique Mengin-Lecreulx
- Laboratoire
des Enveloppes Bactériennes
et Antibiotiques, Institut de Biochimie et Biophysique Moléculaire
et Cellulaire, UMR 8619 CNRS, Université Paris-Sud, Bâtiment 430, Orsay F-91405, France
| | - Ahmed Bouhss
- Laboratoire
des Enveloppes Bactériennes
et Antibiotiques, Institut de Biochimie et Biophysique Moléculaire
et Cellulaire, UMR 8619 CNRS, Université Paris-Sud, Bâtiment 430, Orsay F-91405, France
| | - Hiroshi Oyama
- Shionogi Innovation Center for Drug Discovery, Shionogi & Co., Ltd., Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Satoshi Ichikawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo
060-0812, Japan
| | - Akira Matsuda
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Kita-ku, Sapporo
060-0812, Japan
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199
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Rejman D, Rabatinová A, Pombinho AR, Kovačková S, Pohl R, Zbornı́ková E, Kolář M, Bogdanová K, Nyč O, Šanderová H, Látal T, Bartůněk P, Krásný L. Lipophosphonoxins: New Modular Molecular Structures with Significant Antibacterial Properties. J Med Chem 2011; 54:7884-98. [DOI: 10.1021/jm2009343] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dominik Rejman
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic v.v.i., Flemingovo
nám. 2, 166 10 Prague 6, Czech Republic
| | - Alžbeta Rabatinová
- Institute of Microbiology, Academy of Sciences of the Czech Republic v.v.i., Vı́deňská
1083, 142 20 Prague 4, Czech Republic
| | - António R. Pombinho
- Center for Chemical Genetics and
CZ-OPENSCREEN, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic v.v.i., Vı́deňská
1083, 142 20 Prague 4, Czech Republic
| | - Soňa Kovačková
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic v.v.i., Flemingovo
nám. 2, 166 10 Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic v.v.i., Flemingovo
nám. 2, 166 10 Prague 6, Czech Republic
| | - Eva Zbornı́ková
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the
Czech Republic v.v.i., Flemingovo
nám. 2, 166 10 Prague 6, Czech Republic
| | - Milan Kolář
- TRIOS, Ltd., Zakouřilova 142, Prague
4, 149 00, Prague, Czech Republic
- Department of Microbiology,
Faculty of Medicine and Dentistry, Palacký University Olomouc, 779 00 Olomouc, Czech Republic
| | - Kateřina Bogdanová
- Department of Microbiology,
Faculty of Medicine and Dentistry, Palacký University Olomouc, 779 00 Olomouc, Czech Republic
| | - Otakar Nyč
- Department of Medical Microbiology, Teaching Hospital Motol and Charles University in Prague, Second Faculty of Medicine, V Úvalu 84, 150 06, Prague 5,
Czech Republic
| | - Hana Šanderová
- Institute of Microbiology, Academy of Sciences of the Czech Republic v.v.i., Vı́deňská
1083, 142 20 Prague 4, Czech Republic
| | - Tomáš Látal
- TRIOS, Ltd., Zakouřilova 142, Prague
4, 149 00, Prague, Czech Republic
| | - Petr Bartůněk
- Center for Chemical Genetics and
CZ-OPENSCREEN, Institute of Molecular Genetics, Academy of Sciences of the Czech Republic v.v.i., Vı́deňská
1083, 142 20 Prague 4, Czech Republic
| | - Libor Krásný
- Institute of Microbiology, Academy of Sciences of the Czech Republic v.v.i., Vı́deňská
1083, 142 20 Prague 4, Czech Republic
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200
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Auberger N, Frlan R, Al-Dabbagh B, Bouhss A, Crouvoisier M, Gravier-Pelletier C, Le Merrer Y. Synthesis and biological evaluation of potential new inhibitors of the bacterial transferase MraY with a β-ketophosphonate structure. Org Biomol Chem 2011; 9:8301-12. [PMID: 22042341 DOI: 10.1039/c1ob06124k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable analogs of bacterial transferase MraY substrate or product with a pyrophosphate surrogate in their structure are described. β-ketophosphonates were designed as pyrophosphate bioisosteres and were investigated as UDP-GlcNAc mimics. The developed strategy allows introduction of structural diversity at a late stage of the synthesis. The biological activity of the synthesized compounds was evaluated on the MraY enzyme.
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Affiliation(s)
- Nicolas Auberger
- Université Paris Descartes, UMR 8601 CNRS, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, 45 rue des Saints Pères, 75006 Paris, France
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