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Beniwal M, Jain N, Jain S, Aggarwal N. Design, synthesis, anticancer evaluation and docking studies of novel 2-(1-isonicotinoyl-3-phenyl-1H-pyrazol-4-yl)-3-phenylthiazolidin-4-one derivatives as Aurora-A kinase inhibitors. BMC Chem 2022; 16:61. [PMID: 35978438 PMCID: PMC9382805 DOI: 10.1186/s13065-022-00852-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 07/26/2022] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Aurora-A kinase is associated with the Aurora kinase family which has been considered a striking anticancer target for the treatment of human cancers. OBJECTIVE To design, synthesize, anticancer evaluation, and docking studies of novel 2-(1-isonicotinoyl-3-phenyl-1H-pyrazol-4-yl)-3-phenylthiazolidin-4-one derivatives as Aurora-A Kinase inhibitors. METHOD A total of 21 Pyrazole derivatives P (1-21) were synthesized by using the Vilsmeier Haack reagent which was characterized by FT-IR, 1H NMR, 13C NMR, and Mass spectroscopy. The synthesized derivatives were evaluated for their potential in vitro anticancer activity by MTT assay and Aurora-A kinase inhibition assay. RESULTS The cytotoxicity assay (MTT assay) showed that compound P-6 exhibited potent cytotoxicity (IC50 = 0.37-0.44 μM) against two cancer (HCT 116 and MCF-7) cell lines, which were comparable to the standard compound, VX-680. Compound P-6 also showed inhibition of Aurora-A kinase with an IC50 value of 0.11 ± 0.03 µM. A Docking study was done to compound P-6 and P-20 into the active site of Aurora A kinase, in order to get the probable binding model for further study. CONCLUSION A series of 21 novel pyrazole derivatives P(1-21) were designed, synthesized, in vitro anticancer evaluation, and docking studies for Aurora A kinase inhibition. The results established that P-6 is a prospective aspirant for the development of anticancer agents targeting Aurora-A kinase.
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Affiliation(s)
- Meenu Beniwal
- Department of Pharmaceutical Education & Research, Bhagat Phool Singh Mahila Vishwavidyalaya, Khanpur Kalan, Sonepat, Haryana, 131301, India
| | - Neelam Jain
- Department of Pharmaceutical Education & Research, Bhagat Phool Singh Mahila Vishwavidyalaya, Khanpur Kalan, Sonepat, Haryana, 131301, India
| | - Sandeep Jain
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India
| | - Navidha Aggarwal
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar, Haryana, 125001, India. .,MM College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, 133207, India.
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Investigation of the methylerythritol 4-phosphate pathway for microbial terpenoid production through metabolic control analysis. Microb Cell Fact 2019; 18:192. [PMID: 31690314 PMCID: PMC6833178 DOI: 10.1186/s12934-019-1235-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/17/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Terpenoids are of high interest as chemical building blocks and pharmaceuticals. In microbes, terpenoids can be synthesized via the methylerythritol phosphate (MEP) or mevalonate (MVA) pathways. Although the MEP pathway has a higher theoretical yield, metabolic engineering has met with little success because the regulation of the pathway is poorly understood. RESULTS We applied metabolic control analysis to the MEP pathway in Escherichia coli expressing a heterologous isoprene synthase gene (ispS). The expression of ispS led to the accumulation of isopentenyl pyrophosphate (IPP)/dimethylallyl pyrophosphate (DMAPP) and severely impaired bacterial growth, but the coexpression of ispS and isopentenyl diphosphate isomerase (idi) restored normal growth and wild-type IPP/DMAPP levels. Targeted proteomics and metabolomics analysis provided a quantitative description of the pathway, which was perturbed by randomizing the ribosome binding site in the gene encoding 1-deoxyxylulose 5-phosphate synthase (Dxs). Dxs has a flux control coefficient of 0.35 (i.e., a 1% increase in Dxs activity resulted in a 0.35% increase in pathway flux) in the isoprene-producing strain and therefore exerted significant control over the flux though the MEP pathway. At higher dxs expression levels, the intracellular concentration of 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate (MEcPP) increased substantially in contrast to the other MEP pathway intermediates, which were linearly dependent on the abundance of Dxs. This indicates that 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase (IspG), which consumes MEcPP, became saturated and therefore limited the flux towards isoprene. The higher intracellular concentrations of MEcPP led to the efflux of this intermediate into the growth medium. DISCUSSION These findings show the importance of Dxs, Idi and IspG and metabolite export for metabolic engineering of the MEP pathway and will facilitate further approaches for the microbial production of valuable isoprenoids.
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Lange BM, Rios-Estepa R. Kinetic modeling of plant metabolism and its predictive power: peppermint essential oil biosynthesis as an example. Methods Mol Biol 2014; 1083:287-311. [PMID: 24218222 DOI: 10.1007/978-1-62703-661-0_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The integration of mathematical modeling with analytical experimentation in an iterative fashion is a powerful approach to advance our understanding of the architecture and regulation of metabolic networks. Ultimately, such knowledge is highly valuable to support efforts aimed at modulating flux through target pathways by molecular breeding and/or metabolic engineering. In this article we describe a kinetic mathematical model of peppermint essential oil biosynthesis, a pathway that has been studied extensively for more than two decades. Modeling assumptions and approximations are described in detail. We provide step-by-step instructions on how to run simulations of dynamic changes in pathway metabolites concentrations.
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Synthesis and characterization of pyrazoleanthrone derivatives as Aurora A kinase inhibitors. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-3216-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Singh VK, Ghosh I. Methylerythritol phosphate pathway to isoprenoids: kinetic modeling and in silico enzyme inhibitions in Plasmodium falciparum. FEBS Lett 2013; 587:2806-17. [PMID: 23816706 DOI: 10.1016/j.febslet.2013.06.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 06/14/2013] [Accepted: 06/17/2013] [Indexed: 11/19/2022]
Abstract
The methylerythritol phosphate (MEP) pathway of Plasmodium falciparum (P. falciparum) has become an attractive target for anti-malarial drug discovery. This study describes a kinetic model of this pathway, its use in validating 1-deoxy-d-xylulose 5-phosphate reductoisomerase (DXR) as drug target from the systemic perspective, and additional target identification, using metabolic control analysis and in silico inhibition studies. In addition to DXR, 1-deoxy-d-xylulose 5-phosphate synthase (DXS) can be targeted because it is the first enzyme of the pathway and has the highest flux control coefficient followed by that of DXR. In silico inhibition of both enzymes caused large decrement in the pathway flux. An added advantage of targeting DXS is its influence on vitamin B1 and B6 biosynthesis. Two more potential targets, 2-C-methyl-d-erythritol 2,4-cyclodiphosphate synthase and 1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate synthase, were also identified. Their inhibition caused large accumulation of their substrates causing instability of the system. This study demonstrates that both types of enzyme targets, one acting via flux reduction and the other by metabolite accumulation, exist in P. falciparum MEP pathway. These groups of targets can be exploited for independent anti-malarial drugs.
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Affiliation(s)
- Vivek Kumar Singh
- School of Computational & Integrative Sciences, Jawaharlal Nehru University, New Delhi, India.
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Odejinmi SI, Rascon RG, Chen W, Lai K. Formal Synthesis of 4-diphosphocytidyl-2-C-methyl D-erythritol From D-(+)-Arabitol. Tetrahedron 2012; 68:8937-8941. [PMID: 23049145 PMCID: PMC3462025 DOI: 10.1016/j.tet.2012.08.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
2-C-methyl-D-erythritol-4-phosphate (MEP) is a key chemical intermediate of the non-mevalonate pathway for isoprenoid biosynthesis employed by many pathogenic microbes. MEP is also the precursor for the synthesis of 4-diphosphocytidyl-2-C-methyl D-erythritol (CDP-ME), another key intermediate of the non-mevalonate pathway. As this pathway is non-existent in higher animals, including humans, it represents great opportunities for novel antimicrobial development. To facilitate the in-depth studies of this pathway, we reported here a formal synthesis of CDP-ME through a new synthesis of 2-C-Methyl-D-erythritol-4-phosphoric acid from D-(+)-arabitol.
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Affiliation(s)
- Sina I. Odejinmi
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84132, U.S.A
| | - Rafael G. Rascon
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84132, U.S.A
| | - Wyman Chen
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84132, U.S.A
| | - Kent Lai
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84132, U.S.A
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Hunter WN. Isoprenoid precursor biosynthesis offers potential targets for drug discovery against diseases caused by apicomplexan parasites. Curr Top Med Chem 2011; 11:2048-59. [PMID: 21619509 DOI: 10.2174/156802611796575867] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Accepted: 07/27/2010] [Indexed: 02/08/2023]
Abstract
Two, simple, C5 compounds, dimethylally diphosphate and isopentenyl diphosphate, are the universal precursors of isoprenoids, a large family of natural products involved in numerous important biological processes. Two distinct biosynthetic pathways have evolved to supply these precursors. Humans use the mevalonate route whilst many species of bacteria including important pathogens, plant chloroplasts and apicomplexan parasites exploit the non-mevalonate pathway. The absence from humans, combined with genetic and chemical validation suggests that the non-mevalonate pathway holds the potential to support new drug discovery programmes targeting Gram-negative bacteria and the apicomplexan parasites responsible for causing serious human diseases, and also infections of veterinary importance. The non-mevalonate pathway relies on eight enzyme-catalyzed stages exploiting a range of cofactors and metal ions. A wealth of structural and mechanistic data, mainly derived from studies of bacterial enzymes, now exists for most components of the pathway and these will be described. Particular attention will be paid to how these data inform on the apicomplexan orthologues concentrating on the enzymes from Plasmodium spp. these cause malaria, one the most important parasitic diseases in the world today.
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Affiliation(s)
- William N Hunter
- Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, UK.
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Shan S, Chen X, Liu T, Zhao H, Rao Z, Lou Z. Crystal structure of 4‐diphosphocytidyl‐2‐C‐methyl‐D‐erythritol kinase (IspE) from
Mycobacterium tuberculosis. FASEB J 2011; 25:1577-84. [DOI: 10.1096/fj.10-175786] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shan Shan
- Structural Biology LaboratoryTsinghua UniversityBeijingChina
- MOE Laboratory of Protein ScienceTsinghua UniversityBeijingChina
| | - Xuehui Chen
- National Laboratory of MacromoleculesInstitute of BiophysicsChinese Academy of ScienceBeijingChina
| | - Ting Liu
- National Laboratory of MacromoleculesInstitute of BiophysicsChinese Academy of ScienceBeijingChina
| | - Hanchao Zhao
- Structural Biology LaboratoryTsinghua UniversityBeijingChina
- MOE Laboratory of Protein ScienceTsinghua UniversityBeijingChina
| | - Zihe Rao
- Structural Biology LaboratoryTsinghua UniversityBeijingChina
- MOE Laboratory of Protein ScienceTsinghua UniversityBeijingChina
- National Laboratory of MacromoleculesInstitute of BiophysicsChinese Academy of ScienceBeijingChina
- High-Throughput Molecular Drug Discovery CenterTianjin Joint Academy of Biotechnology and MedicineTianjinChina
| | - Zhiyong Lou
- Structural Biology LaboratoryTsinghua UniversityBeijingChina
- MOE Laboratory of Protein ScienceTsinghua UniversityBeijingChina
- High-Throughput Molecular Drug Discovery CenterTianjin Joint Academy of Biotechnology and MedicineTianjinChina
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Pérez-Gil J, Bergua M, Boronat A, Imperial S. Cloning and functional characterization of an enzyme from Helicobacter pylori that catalyzes two steps of the methylerythritol phosphate pathway for isoprenoid biosynthesis. Biochim Biophys Acta Gen Subj 2010; 1800:919-28. [PMID: 20600626 DOI: 10.1016/j.bbagen.2010.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Revised: 06/15/2010] [Accepted: 06/16/2010] [Indexed: 11/25/2022]
Abstract
BACKGROUND The methylerythritol phosphate pathway for isoprenoid biosynthesis is an attractive target for the design of new specific antibiotics for the treatment of gastrointestinal diseases associated with the presence of the bacterium Helicobacter pylori since this pathway which is essential to the bacterium is absent in humans. RESULTS This work reports the molecular cloning of one of the genes of the methylerythritol phosphate pathway form H. pylori (ispDF; HP_1440) its expression in Escherichia coli and the functional characterization of the recombinant enzyme. As shown by genetic complementation and in vitro functional assays the product of the ispDF gene form H. pylori is a bifunctional enzyme which can replace both CDP-methylerythritol synthase and methylerythritol cyclodiphosphate synthase from E. coli. GENERAL SIGNIFICANCE Designing inhibitors that affect at the same time both enzyme activities of the H. pylori bifunctional enzyme (i.e. by disrupting protein oligomerization) would result in more effective antibiotics which would be able to continue their action even if the bacterium acquired a resistance to another antibiotic directed against one of the individual activities. CONCLUSION The bifunctional enzyme would be an excellent target for the design of new, selective antibiotics for the treatment of H. pylori associated diseases.
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Affiliation(s)
- Jordi Pérez-Gil
- Departament de Bioquimica i Biologia Molecular. Universitat de Barcelona, Avda Diagonal 645. 08028-Barcelona, Spain
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Eoh H, Narayanasamy P, Brown AC, Parish T, Brennan PJ, Crick DC. Expression and characterization of soluble 4-diphosphocytidyl-2-C-methyl-D-erythritol kinase from bacterial pathogens. ACTA ACUST UNITED AC 2010; 16:1230-9. [PMID: 20064433 DOI: 10.1016/j.chembiol.2009.10.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Revised: 10/09/2009] [Accepted: 10/21/2009] [Indexed: 11/17/2022]
Abstract
Many bacterial pathogens utilize the 2-C-methyl-D-erythritol 4-phosphate pathway for biosynthesizing isoprenoid precursors, a pathway that is vital for bacterial survival and absent from human cells, providing a potential source of drug targets. However, the characterization of 4-diphosphocytidyl-2-C-methyl-D-erythritol (CDP-ME) kinase (IspE) has been hindered due to a lack of enantiopure CDP-ME and difficulty in obtaining pure IspE. Here, enantiopure CDP-ME was chemically synthesized and recombinant IspE from bacterial pathogens were purified and characterized. Although gene disruption was not possible in Mycobacterium tuberculosis, IspE is essential in Mycobacterium smegmatis. The biochemical and kinetic characteristics of IspE provide the basis for development of a high throughput screen and structural characterization.
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Affiliation(s)
- Hyungjin Eoh
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
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Gao Y, Xiong W, Li XB, Gao CF, Zhang YL, Li H, Wu QY. Identification of the proteomic changes in Synechocystis sp. PCC 6803 following prolonged UV-B irradiation. JOURNAL OF EXPERIMENTAL BOTANY 2009; 60:1141-1154. [PMID: 19261921 DOI: 10.1093/jxb/ern356] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The diversified physiological responses in cyanobacteria under ultraviolet-B (UV-B) radiation have been broadly researched. The changes in the metabolic control mechanisms hidden behind these physiological traits still need to be further investigated. This research attempts to identify some of the internal mechanisms of several stressful phenotypes such as a decreased growth rate, an impaired photosystem, and the degradation of photosynthetic pigments. Different expression levels of proteins in the cytoplasm of Synechocystis sp. PCC 6803 under short-term and long-term UV-B stress were investigated by using a comparative proteomic approach. One hundred and twelve differentially expressed protein spots were identified by mass spectrometry to match 75 diverse protein species. They mainly focus on amino acid biosynthesis, photosynthesis and respiration, energy metabolism, protein biosynthesis, cell defence, and other functional groups. By focusing on these areas, the study reveals the correlation between UV-B stress-responsive proteins and the physiological changes listed above. The research, showing that short-term response-proteins are quite different from long-term response-proteins, helps to identify the change in homeostatic mechanisms in Synechocystis sp. PCC 6803. Related putative functions of these proteins and the physiological responses of cyanobacteria under UV-B stress, a UV-B responsive protein network in Synechocystis sp. PCC 6803 under long-term stress was successfully produced. Such a protein network helps to increase our understanding of the comprehensive functional network cyanobacteria use to adapt to UV-B stress. In addition, 30 novel proteins not previously found related to UV-B stress were identified. This opens up new areas for exploration to identify the response to UV-B stress in cyanobacteria.
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Affiliation(s)
- Yang Gao
- Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, PR China
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Mimicking direct protein–protein and solvent-mediated interactions in the CDP-methylerythritol kinase homodimer: a pharmacophore-directed virtual screening approach. J Mol Model 2009; 15:997-1007. [DOI: 10.1007/s00894-009-0458-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2008] [Accepted: 12/02/2008] [Indexed: 11/25/2022]
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Sgraja T, Alphey MS, Ghilagaber S, Marquez R, Robertson MN, Hemmings JL, Lauw S, Rohdich F, Bacher A, Eisenreich W, Illarionova V, Hunter WN. Characterization of Aquifex aeolicus 4-diphosphocytidyl-2C-methyl-d-erythritol kinase - ligand recognition in a template for antimicrobial drug discovery. FEBS J 2008; 275:2779-94. [PMID: 18422643 PMCID: PMC2655357 DOI: 10.1111/j.1742-4658.2008.06418.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
4-Diphosphocytidyl-2C-methyl-d-erythritol kinase (IspE) catalyses the ATP-dependent conversion of 4-diphosphocytidyl-2C-methyl-d-erythritol (CDPME) to 4-diphosphocytidyl-2C-methyl-d-erythritol 2-phosphate with the release of ADP. This reaction occurs in the non-mevalonate pathway of isoprenoid precursor biosynthesis and because it is essential in important microbial pathogens and absent from mammals it represents a potential target for anti-infective drugs. We set out to characterize the biochemical properties, determinants of molecular recognition and reactivity of IspE and report the cloning and purification of recombinant Aquifex aeolicus IspE (AaIspE), kinetic data, metal ion, temperature and pH dependence, crystallization and structure determination of the enzyme in complex with CDP, CDPME and ADP. In addition, 4-fluoro-3,5-dihydroxy-4-methylpent-1-enylphosphonic acid (compound 1) was designed to mimic a fragment of the substrate, a synthetic route to 1 was elucidated and the complex structure determined. Surprisingly, this ligand occupies the binding site for the ATP α-phosphate not the binding site for the methyl-d-erythritol moiety of CDPME. Gel filtration and analytical ultracentrifugation indicate that AaIspE is a monomer in solution. The enzyme displays the characteristic α/β galacto-homoserine-mevalonate-phosphomevalonate kinase fold, with the catalytic centre positioned in a deep cleft between the ATP- and CDPME-binding domains. Comparisons indicate a high degree of sequence conservation on the IspE active site across bacterial species, similarities in structure, specificity of substrate recognition and mechanism. The biochemical characterization, attainment of well-ordered and reproducible crystals and the models resulting from the analyses provide reagents and templates to support the structure-based design of broad-spectrum antimicrobial agents.
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Affiliation(s)
- Tanja Sgraja
- Division of Biological Chemistry and Drug Discovery, University of Dundee, UK
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Illarionova V, Kaiser J, Ostrozhenkova E, Bacher A, Fischer M, Eisenreich W, Rohdich F. Nonmevalonate terpene biosynthesis enzymes as antiinfective drug targets: substrate synthesis and high-throughput screening methods. J Org Chem 2007; 71:8824-34. [PMID: 17081012 DOI: 10.1021/jo061466o] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The nonmevalonate isoprenoid pathway is an established target for antiinfective drug development. This paper describes high-throughput methods for the screening of 2C-methyl-D-erythritol synthase (IspC protein), 4-diphosphocytidyl-2C-methyl-D-erythritol synthase (IspD protein), 4-diphosphocytidyl-2C-methyl-D-erythritol kinase (IspE protein), and 2C-methyl-D-erythritol 2,4-cyclodiphosphate synthase (IspF protein) against large compound libraries. The assays use up to three auxiliary enzymes. They are all monitored photometrically at 340 nm and are robust as documented by Z-factors of >or=0.86. 13C NMR assays designed for hit verification via direct detection of the primary reaction product are also described. Enzyme-assisted methods for the preparation, on a multigram scale, of isoprenoid biosynthesis intermediates required as substrates for these assays are reported. Notably, these methods enable the introduction of single or multiple 13C labels as required for NMR-monitored assays. The preparation of 4-diphosphosphocytidyl-2C-methyl-D-erythritol 2-phosphate in multigram quantities is described for the first time.
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Affiliation(s)
- Victoria Illarionova
- Lehrstuhl für Organische Chemie und Biochemie, Department Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching, Germany
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