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Kudo F, Zhang J, Sato S, Hirayama A, Eguchi T. Functional Characterization of 3-Aminobenzoic Acid Adenylation Enzyme PctU and UDP-N-Acetyl-d-Glucosamine: 3-Aminobenzoyl-ACP Glycosyltransferase PctL in Pactamycin Biosynthesis. Chembiochem 2019; 20:2458-2462. [PMID: 31059166 DOI: 10.1002/cbic.201900239] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Indexed: 12/27/2022]
Abstract
Pactamycin is an antibiotic produced by Streptomyces pactum with antitumor and antimalarial properties. Pactamycin has a unique aminocyclitol core that is decorated with 3-aminoacetophenone, 6-methylsaliciate, and an N,N-dimethylcarbamoyl group. Herein, we show that the adenylation enzyme PctU activates 3-aminobenzoic acid (3ABA) with adenosine triphosphate and ligates it to the holo form of the discrete acyl carrier protein PctK to yield 3ABA-PctK. Then, 3ABA-PctK is N-glycosylated with uridine diphosphate-N-acetyl-d-glucosamine (UDP-GlcNAc) by the glycosyltransferase PctL to yield GlcNAc-3ABA-PctK. Because 3ABA is known to be a precursor of the 3-aminoacetophenone moiety, PctU appears to be a gatekeeper that selects the appropriate 3-aminobenzoate starter unit. Overall, we propose that acyl carrier protein-bound glycosylated 3ABA derivatives are biosynthetic intermediates of pactamycin biosynthesis.
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Affiliation(s)
- Fumitaka Kudo
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Jiahao Zhang
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Shusuke Sato
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Akane Hirayama
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Tadashi Eguchi
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo, 152-8551, Japan
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2
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Eida AA, Abugrain ME, Brumsted CJ, Mahmud T. Glycosylation of acyl carrier protein-bound polyketides during pactamycin biosynthesis. Nat Chem Biol 2019; 15:795-802. [PMID: 31308531 PMCID: PMC6642016 DOI: 10.1038/s41589-019-0314-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/29/2019] [Indexed: 11/09/2022]
Abstract
Glycosylation is a common modification reaction in natural products biosynthesis and has been known to be a post assembly line tailoring process in glycosylated polyketide biosynthesis. Here, we show that in pactamycin biosynthesis glycosylation can take place on an acyl carrier protein (ACP)-bound polyketide intermediate. Using in vivo gene inactivation, chemical complementation, and in vitro pathway reconstitution we demonstrate that the 3-aminoacetophenone moiety of pactamycin is derived from 3-aminobenzoic acid by a set of discrete polyketide synthase proteins via a 3-[3-aminophenyl]3-oxopropionyl-ACP intermediate. This ACP-bound intermediate is then glycosylated by an N-glycosyltransferase, PtmJ, providing a sugar precursor for the formation of the aminocyclopentitol core structure of pactamycin. This is the first example of glycosylation of a small molecule while tethered to a carrier protein. Additionally, we demonstrate that PtmO is a hydrolase that is responsible for the release of the ACP-bound product to a free β-ketoacid that subsequently undergoes decarboxylation.
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Affiliation(s)
- Auday A Eida
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, USA
| | - Mostafa E Abugrain
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, USA
| | - Corey J Brumsted
- Department of Chemistry, Oregon State University, Corvallis, OR, USA
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, USA. .,Department of Chemistry, Oregon State University, Corvallis, OR, USA.
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3
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Yñigez-Gutierrez AE, Bachmann BO. Fixing the Unfixable: The Art of Optimizing Natural Products for Human Medicine. J Med Chem 2019; 62:8412-8428. [PMID: 31026161 DOI: 10.1021/acs.jmedchem.9b00246] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Molecules isolated from natural sources including bacteria, fungi, and plants are a long-standing source of therapeutics that continue to add to our medicinal arsenal today. Despite their potency and prominence in the clinic, complex natural products often exhibit a number of liabilities that hinder their development as therapeutics, which may be partially responsible for the current trend away from natural product discovery, research, and development. However, advances in synthetic biology and organic synthesis have inspired a new generation of natural product chemists to tackle powerful undeveloped scaffolds. In this Perspective, we will present case studies demonstrating the historical and current focus on making targeted, but significant, changes to natural product scaffolds via biosynthetic gene cluster manipulation, total synthesis, semisynthesis, or a combination of these methods, with a focus on increasing activity, decreasing toxicity, or improving chemical and pharmacological properties.
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Affiliation(s)
| | - Brian O Bachmann
- Department of Chemistry , Vanderbilt University , Nashville , Tennessee 37235 , United States
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4
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Eida AA, Mahmud T. The secondary metabolite pactamycin with potential for pharmaceutical applications: biosynthesis and regulation. Appl Microbiol Biotechnol 2019; 103:4337-4345. [PMID: 31025074 DOI: 10.1007/s00253-019-09831-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/02/2019] [Accepted: 04/09/2019] [Indexed: 11/25/2022]
Abstract
The antitumor antibiotic pactamycin is a highly substituted aminocyclopentitol-derived secondary metabolite produced by the soil bacterium Streptomyces pactum. It has exhibited potent antibacterial, antitumor, antiviral, and antiprotozoal activities. Despite its outstanding biological activities, the complex chemical structure and broad-spectrum toxicity have hampered its development as a therapeutic, limiting its contribution to biomedical science to a role as a molecular probe for ribosomal function. However, a detailed understanding of its biosynthesis and how the biosynthesis is regulated has made it possible to tactically design and produce new pactamycin analogues, some of which have shown improved pharmacological properties. This mini-review describes the biosynthesis, regulation, engineered production, and biological activities of pactamycin and its congeners. It also highlights the suitability of biosynthetic methods as a feasible approach to generate new analogues of complex natural products and underscores the importance of utilizing biosynthetic enzymes as tools for chemoenzymatic production of structurally diverse bioactive compounds.
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Affiliation(s)
- Auday A Eida
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97331-3507, USA
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97331-3507, USA.
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5
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Du YL, Ryan KS. Pyridoxal phosphate-dependent reactions in the biosynthesis of natural products. Nat Prod Rep 2019; 36:430-457. [DOI: 10.1039/c8np00049b] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We review reactions catalyzed by pyridoxal phosphate-dependent enzymes, highlighting enzymes reported in the recent natural product biosynthetic literature.
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Affiliation(s)
- Yi-Ling Du
- Institute of Pharmaceutical Biotechnology
- Zhejiang University School of Medicine
- Hangzhou
- China
| | - Katherine S. Ryan
- Department of Chemistry
- University of British Columbia
- Vancouver
- Canada
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6
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Rodrigues R, Lazib Y, Maury J, Neuville L, Leboeuf D, Dauban P, Darses B. Approach to pactamycin analogues using rhodium(ii)-catalyzed alkene aziridination and C(sp3)–H amination reactions. Org Chem Front 2018. [DOI: 10.1039/c7qo00878c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Application of dirhodium(ii)-catalyzed nitrene transfers allows for the preparation of a platform bearing the triamino moiety present in pactamycin.
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Affiliation(s)
- Romain Rodrigues
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - Yanis Lazib
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - Julien Maury
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - Luc Neuville
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - David Leboeuf
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS UMR 8182
- Univ. Paris-Sud
- Université Paris-Saclay
- 91405 Orsay cedex
| | - Philippe Dauban
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
| | - Benjamin Darses
- Institut de Chimie des Substances Naturelles
- CNRS UPR 2301
- Univ. Paris-Sud
- Université Paris-Saclay
- 91198 Gif-sur-Yvette
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7
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Fernandes RA, Kattanguru P, Gholap SP, Chaudhari DA. Recent advances in the Overman rearrangement: synthesis of natural products and valuable compounds. Org Biomol Chem 2017; 15:2672-2710. [DOI: 10.1039/c6ob02625g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This review documents the reports since 2005 on the Overman rearrangement, an important C–N bond forming reaction that has been profoundly used in the synthesis of natural products, synthetic intermediates, building blocks and valuable compounds.
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Affiliation(s)
- Rodney A. Fernandes
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Pullaiah Kattanguru
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Sachin P. Gholap
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Dipali A. Chaudhari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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8
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Elshahawi SI, Shaaban KA, Kharel MK, Thorson JS. A comprehensive review of glycosylated bacterial natural products. Chem Soc Rev 2015; 44:7591-697. [PMID: 25735878 PMCID: PMC4560691 DOI: 10.1039/c4cs00426d] [Citation(s) in RCA: 299] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A systematic analysis of all naturally-occurring glycosylated bacterial secondary metabolites reported in the scientific literature up through early 2013 is presented. This comprehensive analysis of 15 940 bacterial natural products revealed 3426 glycosides containing 344 distinct appended carbohydrates and highlights a range of unique opportunities for future biosynthetic study and glycodiversification efforts.
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Affiliation(s)
- Sherif I Elshahawi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA. and Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - Khaled A Shaaban
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA. and Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, USA
| | - Madan K Kharel
- School of Pharmacy, University of Maryland Eastern Shore, Princess Anne, Maryland, USA
| | - Jon S Thorson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY, USA. and Center for Pharmaceutical Research and Innovation, College of Pharmacy, University of Kentucky, Lexington, KY, USA
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9
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Korp J, König S, Schieferdecker S, Dahse HM, König GM, Werz O, Nett M. Harnessing Enzymatic Promiscuity in Myxochelin Biosynthesis for the Production of 5-Lipoxygenase Inhibitors. Chembiochem 2015; 16:2445-50. [PMID: 26416255 DOI: 10.1002/cbic.201500446] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Indexed: 11/10/2022]
Abstract
The siderophore myxochelin A is a potent inhibitor of human 5-lipoxygenase (5-LO). To clarify whether the iron-chelating properties of myxochelin A are responsible for this activity, several analogues of this compound were generated in the native producer Pyxidicoccus fallax by precursor-directed biosynthesis. Testing in a cell-free assay unveiled three derivatives with bioactivity comparable with that of myxochelin A. Furthermore, it became evident that inhibition of 5-LO by myxochelins does not correlate with their iron affinities.
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Affiliation(s)
- Juliane Korp
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Adolf-Reichwein-Strasse 23, 07745, Jena, Germany
| | - Stefanie König
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-Universität Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Sebastian Schieferdecker
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Adolf-Reichwein-Strasse 23, 07745, Jena, Germany
| | - Hans-Martin Dahse
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Adolf-Reichwein-Strasse 23, 07745, Jena, Germany
| | - Gabriele M König
- Institute for Pharmaceutical Biology, Rheinische Friedrich-Wilhelms-Universität Bonn, Nussallee 6, 53115, Bonn, Germany
| | - Oliver Werz
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-Universität Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Markus Nett
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Adolf-Reichwein-Strasse 23, 07745, Jena, Germany.
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10
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Hermane J, Bułyszko I, Eichner S, Sasse F, Collisi W, Poso A, Schax E, Walter JG, Scheper T, Kock K, Herrmann C, Aliuos P, Reuter G, Zeilinger C, Kirschning A. New, non-quinone fluorogeldanamycin derivatives strongly inhibit Hsp90. Chembiochem 2015; 16:302-11. [PMID: 25572106 DOI: 10.1002/cbic.201402375] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 11/04/2014] [Indexed: 11/11/2022]
Abstract
Streptomyces hygroscopicus is a natural producer of geldanamycin. Mutasynthetic supplementation of an AHBA-blocked mutant with all possible monofluoro 3-aminobenzoic acids provided new fluorogeldanamycins. These showed strong antiproliferative activity and inhibitory effects on human heat shock protein Hsp90. Binding to Hsp90 in the low nanomolar range was determined from molecular modelling, AFM analysis and by calorimetric studies.
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Affiliation(s)
- Jekaterina Hermane
- Institute of Organic Chemistry, Center of Biomolecular Drug Research (BMWZ), Leibniz University Hannover, Schneiderberg 1B, 30167 Hannover (Germany)
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11
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Hirayama A, Eguchi T, Kudo F. A Single PLP-Dependent Enzyme PctV Catalyzes the Transformation of 3-Dehydroshikimate into 3-Aminobenzoate in the Biosynthesis of Pactamycin. Chembiochem 2013; 14:1198-203. [DOI: 10.1002/cbic.201300153] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Indexed: 11/09/2022]
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12
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Hanessian S, Vakiti RR, Chattopadhyay AK, Dorich S, Lavallée C. Probing functional diversity in pactamycin toward antibiotic, antitumor, and antiprotozoal activity. Bioorg Med Chem 2013; 21:1775-86. [DOI: 10.1016/j.bmc.2013.01.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 01/15/2013] [Accepted: 01/21/2013] [Indexed: 10/27/2022]
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13
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Almabruk KH, Lu W, Li Y, Abugreen M, Kelly JX, Mahmud T. Mutasynthesis of fluorinated pactamycin analogues and their antimalarial activity. Org Lett 2013; 15:1678-81. [PMID: 23521145 DOI: 10.1021/ol4004614] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A mutasynthetic strategy has been used to generate fluorinated TM-025 and TM-026, two biosynthetically engineered pactamycin analogues produced by Streptomyces pactum ATCC 27456. The fluorinated compounds maintain excellent activity and selectivity toward chloroquine-sensitive and multidrug-resistant strains of malarial parasites as the parent compounds. The results also provide insights into the biosynthesis of 3-aminobenzoic acid in S. pactum.
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Affiliation(s)
- Khaled H Almabruk
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, Oregon 97331-3507, United States
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14
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Hanessian S, Vakiti RR, Dorich S, Banerjee S, Deschênes-Simard B. Total synthesis of pactamycin and pactamycate: a detailed account. J Org Chem 2012; 77:9458-72. [PMID: 23083207 DOI: 10.1021/jo301638z] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This article describes synthetic studies that culminated in the first total synthesis of pactamycin and pactamycate and, in parallel, the two known congeners, de-6-MSA-pactamycin and de-6-MSA-pactamycate, lacking the 6-methylsalicylyl moiety. Starting with L-threonine as a chiron, a series of stereocontrolled condensations led to a key cyclopentenone harboring a spirocyclic oxazoline. A series of systematic functionalizations led initially to the incorrect cyclopentanone epoxide, which was "inverted" under solvolytic conditions. Installation of the remaining groups and manipulation of the oxazoline eventually led to pactamycin, pactamycate, and their desalicylyl analogues.
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Affiliation(s)
- Stephen Hanessian
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada H3C 3J7.
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15
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Matsumoto N, Tsujimoto T, Nakazaki A, Isobe M, Nishikawa T. Synthetic studies on pactamycin, a potent antitumor antibiotic. RSC Adv 2012. [DOI: 10.1039/c2ra21060f] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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16
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Hanessian S, Vakiti RR, Dorich S, Banerjee S, Lecomte F, DelValle JR, Zhang J, Deschênes-Simard B. Total Synthesis of Pactamycin. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201008079] [Citation(s) in RCA: 10] [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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17
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Hanessian S, Vakiti RR, Dorich S, Banerjee S, Lecomte F, DelValle JR, Zhang J, Deschênes-Simard B. Total Synthesis of Pactamycin. Angew Chem Int Ed Engl 2011; 50:3497-500. [DOI: 10.1002/anie.201008079] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Indexed: 11/05/2022]
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18
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Metabolism of fluoroorganic compounds in microorganisms: impacts for the environment and the production of fine chemicals. Appl Microbiol Biotechnol 2009; 84:617-29. [PMID: 19629474 DOI: 10.1007/s00253-009-2127-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2009] [Revised: 07/02/2009] [Accepted: 07/02/2009] [Indexed: 10/20/2022]
Abstract
Incorporation of fluorine into an organic compound can favourably alter its physicochemical properties with respect to biological activity, stability and lipophilicity. Accordingly, this element is found in many pharmaceutical and industrial chemicals. Organofluorine compounds are accepted as substrates by many enzymes, and the interactions of microorganisms with these compounds are of relevance to the environment and the fine chemicals industry. On the one hand, the microbial transformation of organofluorines can lead to the generation of toxic compounds that are of environmental concern, yet similar biotransformations can yield difficult-to-synthesise products and intermediates, in particular derivatives of biologically active secondary metabolites. In this paper, we review the historical and recent developments of organofluorine biotransformation in microorganisms and highlight the possibility of using microbes as models of fluorinated drug metabolism in mammals.
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19
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Olano C, Méndez C, Salas JA. Antitumor compounds from actinomycetes: from gene clusters to new derivatives by combinatorial biosynthesis. Nat Prod Rep 2009; 26:628-60. [PMID: 19387499 DOI: 10.1039/b822528a] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Covering: up to October 2008. Antitumor compounds produced by actinomycetes and novel derivatives generated by combinatorial biosynthesis are reviewed (with 318 references cited.) The different structural groups for which the relevant gene clusters have been isolated and characterized are reviewed, with a description of the strategies used for the generation of the novel derivatives and the activities of these compounds against tumor cell lines.
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Affiliation(s)
- Carlos Olano
- Departamento de Biología Funcional and Instituto Universitario de Oncología del Principado de Asturias (I.U.O.P.A.), Universidad de Oviedo, 33006, Oviedo, Spain
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20
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Menzella HG, Tran TT, Carney JR, Lau-Wee J, Galazzo J, Reeves CD, Carreras C, Mukadam S, Eng S, Zhong Z, Timmermans PBMWM, Murli S, Ashley GW. Potent Non-Benzoquinone Ansamycin Heat Shock Protein 90 Inhibitors from Genetic Engineering of Streptomyces hygroscopicus. J Med Chem 2009; 52:1518-21. [DOI: 10.1021/jm900012a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hugo G. Menzella
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - Thomas-Toan Tran
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - John R. Carney
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - Janice Lau-Wee
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - Jorge Galazzo
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | | | - Christopher Carreras
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - Sophie Mukadam
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - Sara Eng
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - Ziyang Zhong
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | | | - Sumati Murli
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
| | - Gary W. Ashley
- Kosan Biosciences Incorporated, 3832 Bay Center Place, Hayward, California 94545
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21
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Kudo F, Kasama Y, Hirayama T, Eguchi T. Cloning of the Pactamycin Biosynthetic Gene Cluster and Characterization of a Crucial Glycosyltransferase Prior to a Unique Cyclopentane Ring Formation. J Antibiot (Tokyo) 2007; 60:492-503. [PMID: 17827660 DOI: 10.1038/ja.2007.63] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The biosynthetic gene (pct) cluster for an antitumor antibiotic pactamycin was identified by use of a gene for putative radical S-adenosylmethionine methyltransferase as a probe. The pct gene cluster is localized to a 34 kb contiguous DNA from Streptomyces pactum NBRC 13433 and contains 24 open reading frames. Based on the bioinformatic analysis, a plausible biosynthetic pathway for pactamycin comprising of a unique cyclopentane ring, 3-aminoacetophenone, and 6-methylsalicylate was proposed. The pctL gene encoding a glycosyltransferase was speculated to be involved in an N-glycoside formation between 3-aminoacetophenone and UDP-N-acetyl-alpha-D-glucosamine prior to a unique cyclopentane ring formation. The pctL gene was then heterologously expressed in Escherichia coli and the enzymatic activity of the recombinant PctL protein was investigated. Consequently, the PctL protein was found to catalyze the expected reaction forming beta-N-glycoside. The enzymatic activity of the PctL protein clearly confirmed that the present identified gene cluster is for the biosynthesis of pactamycin. Also, a glycosylation prior to cyclopentane ring formation was proposed to be a general strategy in the biosynthesis of the structurally related cyclopentane containing compounds.
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Affiliation(s)
- Fumitaka Kudo
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
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