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Peng J, Gao S, Bi JH, Shi J, Jia L, Pang QF, Zhao DM, Fu Y, Ye F. Design, Synthesis, and Biological Evaluation of Novel Purine Derivatives as Herbicide Safeners. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38598318 DOI: 10.1021/acs.jafc.3c08138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Mesosulfuron-methyl, an inhibitor of acetolactate synthase (ALS), has been extensively used in wheats. However, it can damage wheat (Triticum aestivum) and even lead to crop death. Herbicide safeners selectively shield crops from such damage without compromising weed control. To mitigate the phytotoxicity of mesosulfuron-methyl in crops, several purine derivatives were developed based on active substructure splicing. The synthesized title compounds underwent thorough characterization using infrared spectroscopy, 1H nuclear magnetic resonance (1H NMR), 13C nuclear magnetic resonance (13C NMR), and high-resolution mass spectrometry. We evaluated chlorophyll and glutathione contents as well as various enzyme activities to evaluate the safer activity of these compounds. Compounds III-3 and III-7 exhibited superior activity compared with the safener mefenpyr-diethyl. Molecular structure analysis, along with predictions of absorption, distribution, metabolism, excretion, and toxicity, indicated that compound III-7 shared pharmacokinetic traits with the commercial safener mefenpyr-diethyl. Molecular docking simulations revealed that compound III-7 competitively bound to the ALS active site with mesosulfuron-methyl, elucidating the protective mechanism of the safeners. Overall, this study highlights purine derivatives as potential candidates for novel safener development.
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Affiliation(s)
- Jie Peng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Jing-Hu Bi
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Juan Shi
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ling Jia
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Qi-Fan Pang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Dong-Mei Zhao
- School of Food Engineering, East University of Heilongjiang, Harbin 150076, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Ustun R, Chalmers G, Tehrani D, Uzun B. Computational molecular explanation of Soybean AHAS resistance from P197S mutation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107782. [PMID: 37315349 DOI: 10.1016/j.plaphy.2023.107782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 05/12/2023] [Accepted: 05/17/2023] [Indexed: 06/16/2023]
Abstract
The first enzyme in the pathway involving branched-chain amino is acetohydroxyacid synthase (AHAS, E.C. 2.2.1.6), which is inhibited by five commercial herbicide families. In this work a computational study of a point mutation of Proline-197-Serine of the Soybean AHAS enzyme, which was obtained by mutagenesis, explains the latter's S197 resistance to the commonly used Chlorsulfuron. Using protein-ligand docking and large-scale sampling and distributions from AlphaFold-generated the resistant and susceptible soybean AHAS protein structure. The computational approach here is scaled to screen for mutation probabilities of protein binding sites, similar to screening compounds for potential hits in therapeutic design using the docking software. P197 and S197 AHAS structures were found to be different even if only one amino acid was changed. The non-specific distribution of bindings in the S197 cavity after the P197S change has been rigorously calculated by RMSD analysis that it would require x20 more concentrations to fill the P197 site by the same amount. There is no previously performed detailed chlorsulfuron soybean P197S AHAS binding calculation. In the herbicide site of AHAS, several amino acids interact - a computational study could elucidate the optimal choice of point mutations for herbicidal resistance either individually or collectively by mutations one at a time and analyzing the effects with a set of herbicides individually. With a computational approach, enzymes involved in crop research and development could be analyzed more quickly, enabling faster discovery and development of herbicides.
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Affiliation(s)
- Rustem Ustun
- Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya, Türkiye.
| | - Gordon Chalmers
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - Daniel Tehrani
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - Bulent Uzun
- Department of Field Crops, Faculty of Agriculture, Akdeniz University, Antalya, Türkiye
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Ding Y, Zhao DM, Kang T, Shi J, Ye F, Fu Y. Design, Synthesis, and Structure-Activity Relationship of Novel Aryl-Substituted Formyl Oxazolidine Derivatives as Herbicide Safeners. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7654-7668. [PMID: 37191232 DOI: 10.1021/acs.jafc.3c00467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Nicosulfuron is the leading herbicide in the global sulfonylurea (SU) herbicide market; it was jointly developed by DuPont and Ishihara. Recently, the widespread use of nicosulfuron has led to increasingly prominent agricultural production hazards, such as environmental harm and influence on subsequent crops. The use of herbicide safeners can significantly alleviate herbicide injury to protect crop plants and expand the application scope of existing herbicides. A series of novel aryl-substituted formyl oxazolidine derivatives were designed using the active group combination method. Title compounds were synthesized using an efficient one-pot method and characterized by infrared (IR) spectrometry, 1H and 13C nuclear magnetic resonance (NMR), and high-resolution mass spectrometry (HRMS). The chemical structure of compound V-25 was further identified by X-ray single crystallography. The bioactivity assay and structure-activity relationship proved that nicosulfuron phytotoxicity to maize could be reduced by most title compounds. The glutathione S-transferase (GST) activity and acetolactate synthase (ALS) in vivo were determined, and compound V-12 showed inspiring activity comparable to that of the commercial safener isoxadifen-ethyl. The molecular docking model indicated that compound V-12 competed with nicosulfuron for the acetolactate synthase active site and that this is the protective mechanism of safeners. Absorption, distribution, metabolism, excretion, and toxicity (ADMET) predictions demonstrated that compound V-12 exhibited superior pharmacokinetic properties to the commercialized safener isoxadifen-ethyl. The target compound V-12 shows strong herbicide safener activity in maize; thus, it may be a potential candidate compound that can help further protect maize from herbicide damage.
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Affiliation(s)
- Yu Ding
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Dong-Mei Zhao
- School of Food Engineering, East University of Heilongjiang, Harbin, Heilongjiang 150076, People's Republic of China
| | - Tao Kang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Juan Shi
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
- School of Food Engineering, East University of Heilongjiang, Harbin, Heilongjiang 150076, People's Republic of China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, Heilongjiang 150030, People's Republic of China
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Cheng Y, Lonhienne T, Garcia MD, Williams CM, Schenk G, Guddat LW. Crystal Structure of the Commercial Herbicide, Amidosulfuron, in Complex with Arabidopsis thaliana Acetohydroxyacid Synthase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5117-5126. [PMID: 36943718 DOI: 10.1021/acs.jafc.2c08528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Amidosulfuron (AS) is from the commercial sulfonylurea herbicide family. It is highly effective against dicot broad-leaf weeds. This herbicide targets acetohydroxyacid synthase (AHAS), the first enzyme in the branched chain amino acid biosynthesis pathway. Here, we have determined the crystal structure of AS in complex with wildtype Arabidopsis thaliana AHAS (AtAHAS) and with the resistance mutant, S653T. In both structures, the cofactor, ThDP, is modified to a peracetate adduct, consistent with time-dependent accumulative inhibition. Compared to other AHAS-inhibiting herbicides of the sulfonylurea family, AS lacks a second aromatic ring. The replacement is an aryl sulfonyl group with a reduced number of interactions with the enzyme and relatively low affinity (Ki = 4.2 μM vs low nM when two heteroaromatic rings are present). This study shows that effective herbicides can have a relatively high Ki for plant AHAS but can still be a potent herbicide provided accumulative inhibition also occurs.
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Affiliation(s)
- Yan Cheng
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Thierry Lonhienne
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Mario D Garcia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Craig M Williams
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Gerard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
| | - Luke W Guddat
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
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Fang J, Yang D, Zhao Z, Chen J, Dong L. A novel Phe-206-Leu mutation in acetolactate synthase confers resistance to penoxsulam in barnyardgrass (Echinochloa crus-galli (L.) P. Beauv). PEST MANAGEMENT SCIENCE 2022; 78:2560-2570. [PMID: 35334143 DOI: 10.1002/ps.6887] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/23/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Barnyardgrass (Echinochloa crus-galli (L.) P. Beauv) has evolved resistance to the acetolactate synthase (ALS) inhibitor penoxsulam which is used to control weeds in rice fields in China. The present study is conducted to identify the target-site resistance (TSR) mechanisms conferring resistance in a penoxsulam-resistant population. RESULTS The ALS sensitivity in vitro of the resistant population was sixfold lower to penoxsulam than that of the sensitive population. ALS sequencing revealed that no known mutation conferring ALS herbicide resistance was detected. However, a novel mutation Phe-206-Leu was identified in the ALS gene. Additionally, ALS gene expression level of the resistant population was lower than that of the sensitive population. Therefore, the penoxsulam resistance was not due to the overexpression of ALS gene. Molecular docking revealed that this mutation may change the interaction of the penoxsulam-ALS binding and weaken its mutual affinity by approximately 10%. Arabidopsis thaliana transformed with mutant ALS had fourfold greater resistance to penoxsulam and varied cross-resistance to other ALS herbicides than those transformed with sensitive ALS. Mutant and sensitive ALS proteins expressed by the baculovirus system exhibited different in vitro penoxsulam sensitivity levels. Mutant ALS had eightfold lower sensitivity to penoxsulam than sensitive ALS. CONCLUSION This report provides clear evidence that the ALS mutation at position 206 (Phe-206-Leu) confers penoxsulam resistance in barnyardgrass. Phe-206 was confirmed to be the ninth amino acid residue related to ALS herbicide resistance in weeds. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Jiapeng Fang
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application/College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Dongchen Yang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Zerui Zhao
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application/College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Jinyi Chen
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application/College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Liyao Dong
- State and Local Joint Engineering Research Center of Green Pesticide Invention and Application/College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Key Laboratory of Integrated Pest Management on Crops in East China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
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Jiang B, Chai Y, He X, Wang Y, Chen B, Li Y, Li R. Synthesis, herbicidal activity study, and molecular docking of novel acylthiourea derivatives. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2063289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Binbin Jiang
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yunlong Chai
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Xu He
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yan Wang
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Bo Chen
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yang Li
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Ranhong Li
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
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de Faria AC, Daré JK, da Cunha EFF, Freitas MP. Computer-Assisted Improvement of Sulfonylureas with Antifungal Properties and Limited Herbicidal Activity: Potential Application in Forage Conservation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3321-3330. [PMID: 35230107 DOI: 10.1021/acs.jafc.1c07352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This work reports studies at the molecular level of a series of modified sulfonylureas to determine the chemophoric sites responsible for their antifungal and herbicidal activities. For forage conservation, high antifungal potency and low phytotoxicity are required. A molecular modeling study based on multivariate image analysis applied to quantitative structure-activity relationship (MIA-QSAR) was performed to model these properties, as well as to guide the design of new agrochemical candidates. As a result, the MIA-QSAR models were reliable, robust, and predictive; for antifungal activity, the averages of the main validation parameters were r2 = 0.936, q2 = 0.741, and r2pred = 0.720, and for herbicidal activity, the model was very predictive (r2pred = 0.981 and r2m = 0.944). From the interpretation of the MIA-plots, 46 novel sulfonylureas with likely improved performance were proposed, from which 9 presented promising calculated selectivity indexes. Docking studies were performed to validate the QSAR predictions and to understand the interaction mode of the proposed ligands with the acetohydroxyacid synthase enzyme.
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Affiliation(s)
- Adriana C de Faria
- Departamento de Química, Instituto de Ciências Naturais, Universidade Federal de Lavras, Lavras, Minas Gerais 37200-900, Brazil
| | - Joyce K Daré
- Departamento de Química, Instituto de Ciências Naturais, Universidade Federal de Lavras, Lavras, Minas Gerais 37200-900, Brazil
| | - Elaine F F da Cunha
- Departamento de Química, Instituto de Ciências Naturais, Universidade Federal de Lavras, Lavras, Minas Gerais 37200-900, Brazil
| | - Matheus P Freitas
- Departamento de Química, Instituto de Ciências Naturais, Universidade Federal de Lavras, Lavras, Minas Gerais 37200-900, Brazil
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Zhang R, Chen S, Meng X, Chai Z, Wang D, Yuan Y, Chen K, Jiang L, Li J, Gao C. Generating broad-spectrum tolerance to ALS-inhibiting herbicides in rice by base editing. SCIENCE CHINA. LIFE SCIENCES 2021; 64:1624-1633. [PMID: 33165814 DOI: 10.1007/s11427-020-1800-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 08/11/2020] [Indexed: 02/08/2023]
Abstract
Herbicide-tolerant rice varieties generated by genome editing are highly desirable for weed control. We have used a cytosine base editor to create a series of missense mutations in the P171 and/or G628 codons of the acetolactate synthase (ALS) gene to confer herbicide tolerance in rice. The four different missense mutations in the P171 codon, P171S, P171A, P171Y and P171F, exhibited different patterns of tolerance towards five representative herbicides from five chemical families of ALS inhibitors. For example, P171S and P171A had lower levels of tolerance than P171Y and P171F to bispyribac but not to the other herbicides. Interestingly, a novel triple mutant (P171F/G628E/G629S) had the highest tolerance to all five tested herbicides. Field trials showed that both P171F and P171F/G628E/G629S could potentially be used with nicosulfuron. Our work illustrates an effective way of using base editing to generate herbicide tolerance in elite rice varieties.
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Affiliation(s)
- Rui Zhang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Genome Editing, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Sha Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Genome Editing, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangbing Meng
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Zhuangzhuang Chai
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Genome Editing, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Delin Wang
- Key Lab of Pest Monitoring and Green Management, MOA; Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Yuge Yuan
- Key Lab of Pest Monitoring and Green Management, MOA; Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Kunling Chen
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Genome Editing, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China
| | - Linjian Jiang
- Key Lab of Pest Monitoring and Green Management, MOA; Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, 100193, China.
| | - Jiayang Li
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Caixia Gao
- State Key Laboratory of Plant Cell and Chromosome Engineering, Center for Genome Editing, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, 100101, China.
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
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Wang HL, Li HR, Zhang YC, Yang WT, Yao Z, Wu RJ, Niu CW, Li YH, Wang JG. Discovery of ortho-Alkoxy Substituted Novel Sulfonylurea Compounds That Display Strong Herbicidal Activity against Monocotyledon Grasses. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:8415-8427. [PMID: 34283603 DOI: 10.1021/acs.jafc.1c02081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In the present study, we have designed and synthesized a series of 42 novel sulfonylurea compounds with ortho-alkoxy substitutions at the phenyl ring and evaluated their herbicidal activities. Some target compounds showed excellent herbicidal activity against monocotyledon weed species. When applied at 7.5 g ha-1, 6-11 exhibited more potent herbicidal activity against barnyard grass (Echinochloa crus-galli) and crab grass (Digitaria sanguinalis) than commercial acetohydroxyacid synthase (AHAS; EC 2.2.1.6) inhibitors triasulfuron, penoxsulam, and nicosulfuron at both pre-emergence and postemergence conditions. 6-11 was safe for peanut for postemergence application at this ultralow dosage, suggesting that it could be considered a potential herbicide candidate for peanut fields. Although 6-11 and triasulfuron share similar chemical structures and have close Ki values for plant AHAS, a significant difference has been observed between their LUMO maps from DFT calculations, which might be a possible factor that leads to their different behaviors toward monocotyledon weed species.
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Affiliation(s)
- Hai-Lian Wang
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hao-Ran Li
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yi-Chi Zhang
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wen-Tao Yang
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zheng Yao
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ren-Jun Wu
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Cong-Wei Niu
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yong-Hong Li
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jian-Guo Wang
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center, College of Chemistry, Nankai University, Tianjin 300071, China
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Li JH, Li RH, Wang Y, Li SX, Wu YP, Zhang J, Zhu YG, Xie BJ. Synthesis, herbicidal activity, enzyme activity, and molecular docking of novel aniline thiourea. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2021.1901702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jia hui Li
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Ran hong Li
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yan Wang
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Sui xin Li
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yun peng Wu
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Jing Zhang
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yong gang Zhu
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Bei jie Xie
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
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11
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Li JH, Wang Y, Wu YP, Li RH, Liang S, Zhang J, Zhu YG, Xie BJ. Synthesis, herbicidal activity study and molecular docking of novel pyrimidine thiourea. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 172:104766. [PMID: 33518053 DOI: 10.1016/j.pestbp.2020.104766] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 12/16/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
According to the pharmacophore binding strategy and principle of bioelectronic isobaric, used the sulfonylurea bridge as the parent structure, a series of novel thiourea compounds containing aromatic-substituted pyrimidines were designed and synthesized. The preliminary herbicidal activity tests showed that some compounds had good herbicidal activity against Digitaria adscendens, Amaranthus retroflexus, especially for compound 4d and 4f. The results showed that compound 4d had an inhibition rate of 81.5% on the root growth of Brassica napus L. at the concentration of 100 mg L-1, and compound 4f had an inhibition rate of 81% on the root growth of Digitaria adscendens at the concentration of 100 mg L-1. Compounds 4d and 4f had higher comparative activity on Echinochloa crus-galli than the commercial herbicide bensulfuron-methyl. The preliminary structure-activity relationship (SAR) was also summarized. We also tested the in vivo AHAS enzyme activity inhibition experiment of 14 compounds at 100 mg L-1, and the results showed that they all have inhibitory activity on the enzyme, with the highest inhibition rate reaching 44.4% (compound 4d). Based on the results of molecular docking to yeast acetohydroxyacid synthase (AHAS), the possible herbicidal activity mechanism of these compounds was evaluated.
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Affiliation(s)
- Jia-Hui Li
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yan Wang
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China.
| | - Yun-Peng Wu
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Ran-Hong Li
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Shuang Liang
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Jing Zhang
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Yong-Gang Zhu
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Bei-Jie Xie
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
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12
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Li X, Yang X, Zheng X, Bai M, Hu D. Review on Structures of Pesticide Targets. Int J Mol Sci 2020; 21:E7144. [PMID: 32998191 PMCID: PMC7582455 DOI: 10.3390/ijms21197144] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Molecular targets play important roles in agrochemical discovery. Numerous pesticides target the key proteins in pathogens, insect, or plants. Investigating ligand-binding pockets and/or active sites in the proteins' structures is usually the first step in designing new green pesticides. Thus, molecular target structures are extremely important for the discovery and development of such pesticides. In this manuscript, we present a review of the molecular target structures, including those of antiviral, fungicidal, bactericidal, insecticidal, herbicidal, and plant growth-regulator targets, currently used in agrochemical research. The data will be helpful in pesticide design and the discovery of new green pesticides.
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Affiliation(s)
- Xiangyang Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China;
| | - Xueqing Yang
- College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China;
| | - Xiaodong Zheng
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China;
| | - Miao Bai
- College of Horticulture, Hunan Agricultural University, Changsha 410128, China;
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China;
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Chen W, Li Y, Zhou Y, Ma Y, Li Z. Design, synthesis and SAR study of novel sulfonylurea derivatives containing arylpyrimidine moieties as potential anti-phytopathogenic fungal agents. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.04.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Tong J, Jiang G, Li L, Li Y. Molecular Virtual Screening Studies of Herbicidal Sulfonylurea Analogues Using Molecular Docking and Topomer CoMFA Research. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619020057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Wu RJ, Ren T, Gao JY, Wang L, Yu Q, Yao Z, Song GQ, Ruan WB, Niu CW, Song FH, Zhang LX, Li M, Wang JG. Chemical preparation, biological evaluation and 3D-QSAR of ethoxysulfuron derivatives as novel antifungal agents targeting acetohydroxyacid synthase. Eur J Med Chem 2018; 162:348-363. [PMID: 30448420 DOI: 10.1016/j.ejmech.2018.11.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 11/01/2018] [Accepted: 11/03/2018] [Indexed: 12/29/2022]
Abstract
Accetohydroxyacid synthase (AHAS) is the first enzyme involved in the biosynthetic pathway of branched-chain amino acids. Earlier gene mutation of Candida albicans in a mouse model suggested that this enzyme is a promising target of antifungals. Recent studies have demonstrated that some commercial AHAS-inhibiting sulfonylurea herbicides exerted desirable antifungal activity. In this study, we have designed and synthesized 68 novel ethoxysulfulron (ES) derivatives and evaluated their inhibition constants (Ki) against C. albicans AHAS and cell based minimum inhibitory concentration (MIC) values. The target compounds 5-1, 5-10, 5-22, 5-31 and 5-37 displayed stronger AHAS inhibitions than ES did. Compound 5-1 had the best Ki of 6.7 nM against fungal AHAS and MIC values of 2.5 mg/L against Candida albicans and Candica parapsilosis after 72 h. A suitable nematode model was established here and the antifungal activity of 5-1 was further evaluated in vivo. A possible binding mode was simulated via molecular docking and a comparative field analysis (CoMFA) model was constructed to understand the structure-activity relationship. The current study has indicated that some ES derivatives should be considered as promising hits to develop antifungal drugs with novel biological target.
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Affiliation(s)
- Ren-Jun Wu
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Tongtong Ren
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Jie-Yu Gao
- State Key Laboratory of Microbial Resources and CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China
| | - Li Wang
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qilin Yu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Zheng Yao
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Guo-Qing Song
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wei-Bin Ruan
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Cong-Wei Niu
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Fu-Hang Song
- State Key Laboratory of Microbial Resources and CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Li-Xin Zhang
- State Key Laboratory of Microbial Resources and CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China; State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Mingchun Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China.
| | - Jian-Guo Wang
- State-Key Laboratory and Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
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16
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Xie Y, Wen X, Zhao D, Niu C, Zhao Y, Qi H, Xi Z. Interactions between the ACT Domains and Catalytic Subunits of Acetohydroxyacid Synthases (AHASs) from Different Species. Chembiochem 2018; 19:2387-2394. [DOI: 10.1002/cbic.201800367] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/16/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Yonghui Xie
- State Key Laboratory of Elemento-Organic Chemistry; Department of Chemical Biology; National Pesticide Engineering Research Center (Tianjin); Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Xin Wen
- State Key Laboratory of Elemento-Organic Chemistry; Department of Chemical Biology; National Pesticide Engineering Research Center (Tianjin); Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Dongmei Zhao
- State Key Laboratory of Elemento-Organic Chemistry; Department of Chemical Biology; National Pesticide Engineering Research Center (Tianjin); Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Congwei Niu
- State Key Laboratory of Elemento-Organic Chemistry; Department of Chemical Biology; National Pesticide Engineering Research Center (Tianjin); Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Yuefang Zhao
- State Key Laboratory of Elemento-Organic Chemistry; Department of Chemical Biology; National Pesticide Engineering Research Center (Tianjin); Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Haoman Qi
- State Key Laboratory of Elemento-Organic Chemistry; Department of Chemical Biology; National Pesticide Engineering Research Center (Tianjin); Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Zhen Xi
- State Key Laboratory of Elemento-Organic Chemistry; Department of Chemical Biology; National Pesticide Engineering Research Center (Tianjin); Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); College of Chemistry; Nankai University; Tianjin 300071 P.R. China
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17
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Zhou S, Hua X, Wei W, Chen M, Gu Y, Zhou S, Song H, Li Z. Research on controllable alkaline soil degradation of 5-substituted chlorsulfuron. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.09.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Mao B, Gao M, Chen C, Li Z, Zhang HY, Zhang Q. Design, synthesis and biological evaluation of novel N-nitrophenyl derivatives based on the structure of acetohydroxyacid synthase. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2018; 145:100-107. [PMID: 29482725 DOI: 10.1016/j.pestbp.2018.01.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 01/15/2018] [Accepted: 01/21/2018] [Indexed: 06/08/2023]
Abstract
Acetohydroxyacid synthase (AHAS, EC: 2.2.1.6) is a target for the development of novel herbicides. Two series of N-nitrophenyl derivatives, type-A and type-B, were designed and synthesized based on the active site of the AHAS structure. All the structures of newly prepared compounds were thorough characterized by IR, and 1H NMR spectrums. The IC50 values of all synthesized target compounds against AHAS enzyme and EC50 values for herbicidal activity against Brassica campestris L., Amaranthus mangostanus L. and Sorghum sudanense were determined. The bioactive assay results showed that the type-B compounds exhibited highly improved inhibitory activity against the AHAS enzyme and the tested plants comparing to type-A compounds. The IC50 values of most type-B compounds against the AHAS enzyme were between 25-177μM. The EC50 values of several type-B compounds against Sorghum sudanense reached 5.0mg/L. The differences in the biological activity between type-A and type-B compounds were attributed to two structural features - the orthogonal bend at the N-nitro amides group and the common plane structure of another phenyl with chain bridge. With the structure of the target compounds and the IC50 values for AHAS enzyme, a statistically significant CoMFA model with high predict abilities (q2=0.606, r2=0.982, N=4, SEE=0.058, F=280.255) was obtained, and its reliability was verified. The model will provide a theoretical basis for the further structural optimization.
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Affiliation(s)
- Bangqiang Mao
- College of Science, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Min Gao
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Changshui Chen
- College of Science, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Zhijun Li
- Department of Chemistry & Biochemistry, University of the Sciences, Philadelphia, PA 19104, USA
| | - Hong-Yu Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Qingye Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, PR China.
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Zhou S, Hua XW, Wei W, Gu YC, Liu XQ, Chen JH, Chen MG, Xie YT, Zhou S, Meng XD, Zhang Y, Li YH, Wang BL, Song HB, Li ZM. Research on Controllable Degradation of Novel Sulfonylurea Herbicides in Acidic and Alkaline Soils. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7661-7668. [PMID: 28813155 DOI: 10.1021/acs.jafc.7b03029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The degradation issue of sulfonylurea (SU) has become one of the biggest challenges that hamper the development and application of this class of herbicides, especially in the alkaline soils of northern China. On the basis of the previous discovery that some substituents on the fifth position of the benzene ring in Chlorsulfuron could hasten its degradation rate, apparently in acidic soil, this work on Metsulfuron-methyl showed more convincing results. Two novel compounds (I-1 and I-2) were designed and synthesized, and they still retained potent herbicidal activity in tests against both dicotyledons and monocotyledons. The half-lives of degradation (DT50) assay revealed that I-1 showed an accelerated degradation rate in acidic soil (pH 5.59). Moreover, we delighted to find that the degradation rate of I-1 was 9-10-fold faster than that of Metsulfuron-methyl and Chlorsulfuron when in alkaline soil (pH 8.46), which has more practical value. This research suggests that a modified structure that has potent herbicidal activity as well as accelerated degradation rate could be realized and this approach may provide a way to improve the residue problem of SUs in farmlands with alkaline soil.
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Affiliation(s)
- Shaa Zhou
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Xue-Wen Hua
- College of Agriculture, Liaocheng University , Liaocheng 252000, China
| | - Wei Wei
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Yu-Cheng Gu
- Jealott's Hill International Research Centre, Syngenta , Bracknell, Berkshire, RG42 6EY, U.K
| | - Xiao-Qing Liu
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Jing-Huo Chen
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Ming-Gui Chen
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Yong-Tao Xie
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Sha Zhou
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Xiang-De Meng
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Yan Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Yong-Hong Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Bao-Lei Wang
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Hai-Bin Song
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
| | - Zheng-Ming Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University , Tianjin 300071, China
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20
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Garcia MD, Wang JG, Lonhienne T, Guddat LW. Crystal structure of plant acetohydroxyacid synthase, the target for several commercial herbicides. FEBS J 2017; 284:2037-2051. [PMID: 28485824 DOI: 10.1111/febs.14102] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 03/21/2017] [Accepted: 05/04/2017] [Indexed: 11/26/2022]
Abstract
Acetohydroxyacid synthase (AHAS, EC 2.2.1.6) is the first enzyme in the branched-chain amino acid biosynthesis pathway. Five of the most widely used commercial herbicides (i.e. sulfonylureas, imidazolinones, triazolopyrimidines, pyrimidinyl-benzoates and sulfonylamino-cabonyl-triazolinones) target this enzyme. Here we have determined the first crystal structure of a plant AHAS in the absence of any inhibitor (2.9 Å resolution) and it shows that the herbicide-binding site adopts a folded state even in the absence of an inhibitor. This is unexpected because the equivalent regions for herbicide binding in uninhibited Saccharomyces cerevisiae AHAS crystal structures are either disordered, or adopt a different fold when the herbicide is not present. In addition, the structure provides an explanation as to why some herbicides are more potent inhibitors of Arabidopsis thaliana AHAS compared to AHASs from other species (e.g. S. cerevisiae). The elucidation of the native structure of plant AHAS provides a new platform for future rational structure-based herbicide design efforts. DATABASE The coordinates and structure factors for uninhibited AtAHAS have been deposited in the Protein Data Bank (www.pdb.org) with the PDB ID code 5K6Q.
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Affiliation(s)
- Mario Daniel Garcia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Jian-Guo Wang
- State-Key Laboratory and Institute of Elemento-Organic Chemistry, National Pesticide Engineering Research Center and College of Chemistry, Nankai University, Tianjin, China
| | - Thierry Lonhienne
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Luke William Guddat
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
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21
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Nakazawa M, Hayashi R, Takenaka S, Inui H, Ishikawa T, Ueda M, Sakamoto T, Nakano Y, Miyatake K. Physiological functions of pyruvate:NADP + oxidoreductase and 2-oxoglutarate decarboxylase in Euglena gracilis under aerobic and anaerobic conditions. Biosci Biotechnol Biochem 2017; 81:1386-1393. [PMID: 28463550 DOI: 10.1080/09168451.2017.1318696] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In Euglena gracilis, pyruvate:NADP+ oxidoreductase, in addition to the pyruvate dehydrogenase complex, functions for the oxidative decarboxylation of pyruvate in the mitochondria. Furthermore, the 2-oxoglutarate dehydrogenase complex is absent, and instead 2-oxoglutarate decarboxylase is found in the mitochondria. To elucidate the central carbon and energy metabolisms in Euglena under aerobic and anaerobic conditions, physiological significances of these enzymes involved in 2-oxoacid metabolism were examined by gene silencing experiments. The pyruvate dehydrogenase complex was indispensable for aerobic cell growth in a glucose medium, although its activity was less than 1% of that of pyruvate:NADP+ oxidoreductase. In contrast, pyruvate:NADP+ oxidoreductase was only involved in the anaerobic energy metabolism (wax ester fermentation). Aerobic cell growth was almost completely suppressed when the 2-oxoglutarate decarboxylase gene was silenced, suggesting that the tricarboxylic acid cycle is modified in Euglena and 2-oxoglutarate decarboxylase takes the place of the 2-oxoglutarate dehydrogenase complex in the aerobic respiratory metabolism.
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Affiliation(s)
- Masami Nakazawa
- a Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences , Osaka Prefecture University , Sakai , Japan.,b Core Research for Evolutional Science and Technology (CREST) , Japan Science and Technology Agency (JST) , Kawaguchi , Japan
| | - Ryuta Hayashi
- a Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences , Osaka Prefecture University , Sakai , Japan
| | - Shigeo Takenaka
- c Division of Veterinary Sciences, Graduate School of Life and Environmental Sciences , Osaka Prefecture University , Izumisano , Japan
| | - Hiroshi Inui
- b Core Research for Evolutional Science and Technology (CREST) , Japan Science and Technology Agency (JST) , Kawaguchi , Japan.,d Department of Nutrition, College of Health and Human Sciences , Osaka Prefecture University , Habikino , Japan
| | - Takahiro Ishikawa
- b Core Research for Evolutional Science and Technology (CREST) , Japan Science and Technology Agency (JST) , Kawaguchi , Japan.,e Faculty of Life and Environmental Science, Department of Life Science and Biotechnology , Shimane University , Matsue , Japan
| | - Mitsuhiro Ueda
- a Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences , Osaka Prefecture University , Sakai , Japan
| | - Tatsuji Sakamoto
- a Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences , Osaka Prefecture University , Sakai , Japan
| | - Yoshihisa Nakano
- a Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences , Osaka Prefecture University , Sakai , Japan
| | - Kazutaka Miyatake
- f Faculty of Human and Cultural Studies, Department of Nutrition and Food Sciences , Tezukayama Gakuin University , Sakai , Japan
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Comprehensive understanding of acetohydroxyacid synthase inhibition by different herbicide families. Proc Natl Acad Sci U S A 2017; 114:E1091-E1100. [PMID: 28137884 PMCID: PMC5321015 DOI: 10.1073/pnas.1616142114] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Five commercial herbicide families inhibit acetohydroxyacid synthase (AHAS, E.C. 2.2.1.6), which is the first enzyme in the branched-chain amino acid biosynthesis pathway. The popularity of these herbicides is due to their low application rates, high crop vs. weed selectivity, and low toxicity in animals. Here, we have determined the crystal structures of Arabidopsis thaliana AHAS in complex with two members of the pyrimidinyl-benzoate (PYB) and two members of the sulfonylamino-carbonyl-triazolinone (SCT) herbicide families, revealing the structural basis for their inhibitory activity. Bispyribac, a member of the PYBs, possesses three aromatic rings and these adopt a twisted "S"-shaped conformation when bound to A. thaliana AHAS (AtAHAS) with the pyrimidinyl group inserted deepest into the herbicide binding site. The SCTs bind such that the triazolinone ring is inserted deepest into the herbicide binding site. Both compound classes fill the channel that leads to the active site, thus preventing substrate binding. The crystal structures and mass spectrometry also show that when these herbicides bind, thiamine diphosphate (ThDP) is modified. When the PYBs bind, the thiazolium ring is cleaved, but when the SCTs bind, ThDP is modified to thiamine 2-thiazolone diphosphate. Kinetic studies show that these compounds not only trigger reversible accumulative inhibition of AHAS, but also can induce inhibition linked with ThDP degradation. Here, we describe the features that contribute to the extraordinarily powerful herbicidal activity exhibited by four classes of AHAS inhibitors.
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Hua X, Zhou S, Chen M, Wei W, Liu M, Lei K, Zhou S, Li Y, Wang B, Li Z. Controllable Effect of Structural Modification of Sulfonylurea Herbicides on Soil Degradation. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600438] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Design, synthesis and herbicidal activity of novel sulfonylureas containing tetrahydrophthalimide substructure. Chem Res Chin Univ 2016. [DOI: 10.1007/s40242-016-5480-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hua XW, Chen MG, Zhou S, Zhang DK, Liu M, Zhou S, Liu JB, Lei K, Song HB, Li YH, Gu YC, Li ZM. Research on controllable degradation of sulfonylurea herbicides. RSC Adv 2016. [DOI: 10.1039/c5ra25765d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Through studying structure, bioassay and soil degradation tri-factor relationship, potential controllable degradation of SU was firstly explored and summarized.
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Functional evaluation of residues in the herbicide-binding site of Mycobacterium tuberculosis acetohydroxyacid synthase by site-directed mutagenesis. Enzyme Microb Technol 2015. [DOI: 10.1016/j.enzmictec.2015.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Lu W, Baig IA, Sun HJ, Cui CJ, Guo R, Jung IP, Wang D, Dong M, Yoon MY, Wang JG. Synthesis, crystal structure and biological evaluation of substituted quinazolinone benzoates as novel antituberculosis agents targeting acetohydroxyacid synthase. Eur J Med Chem 2015; 94:298-305. [DOI: 10.1016/j.ejmech.2015.03.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 03/03/2015] [Accepted: 03/05/2015] [Indexed: 11/17/2022]
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28
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Li Z, Cheng Y, Cui J, Zhang P, Zhao H, Hu S. Comparative transcriptome analysis reveals carbohydrate and lipid metabolism blocks in Brassica napus L. male sterility induced by the chemical hybridization agent monosulfuron ester sodium. BMC Genomics 2015; 16:206. [PMID: 25880309 PMCID: PMC4376087 DOI: 10.1186/s12864-015-1388-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 02/24/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chemical hybridization agents (CHAs) are often used to induce male sterility for the production of hybrid seeds. We previously discovered that monosulfuron ester sodium (MES), an acetolactate synthase (ALS) inhibitor of the herbicide sulfonylurea family, can induce rapeseed (Brassica napus L.) male sterility at approximately 1% concentration required for its herbicidal activity. To find some clues to the mechanism of MES inducing male sterility, the ultrastructural cytology observations, comparative transcriptome analysis, and physiological analysis on carbohydrate content were carried out in leaves and anthers at different developmental stages between the MES-treated and mock-treated rapeseed plants. RESULTS Cytological analysis revealed that the plastid ultrastructure was abnormal in pollen mother cells and tapetal cells in male sterility anthers induced by MES treatment, with less material accumulation in it. However, starch granules were observed in chloroplastids of the epidermis cells in male sterility anthers. Comparative transcriptome analysis identified 1501 differentially expressed transcripts (DETs) in leaves and anthers at different developmental stages, most of these DETs being localized in plastid and mitochondrion. Transcripts involved in metabolism, especially in carbohydrate and lipid metabolism, and cellular transport were differentially expressed. Pathway visualization showed that the tightly regulated gene network for metabolism was reprogrammed to respond to MES treatment. The results of cytological observation and transcriptome analysis in the MES-treated rapeseed plants were mirrored by carbohydrate content analysis. MES treatment led to decrease in soluble sugars content in leaves and early stage buds, but increase in soluble sugars content and decrease in starch content in middle stage buds. CONCLUSIONS Our integrative results suggested that carbohydrate and lipid metabolism were influenced by CHA-MES treatment during rapeseed anther development, which might responsible for low concentration MES specifically inducing male sterility. A simple action model of CHA-MES inducing male sterility in B. napus was proposed. These results will help us to understand the mechanism of MES inducing male sterility at low concentration, and might provide some potential targets for developing new male sterility inducing CHAs and for genetic manipulation in rapeseed breeding.
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Affiliation(s)
- Zhanjie Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China. .,College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Yufeng Cheng
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China. .,College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Jianmin Cui
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China. .,College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Peipei Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China. .,College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Huixian Zhao
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China. .,College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, P.R. China.
| | - Shengwu Hu
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China. .,College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, P.R. China.
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Sommer B, von Moeller H, Haack M, Qoura F, Langner C, Bourenkov G, Garbe D, Loll B, Brück T. Detailed structure-function correlations of Bacillus subtilis acetolactate synthase. Chembiochem 2014; 16:110-8. [PMID: 25393087 DOI: 10.1002/cbic.201402541] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Indexed: 02/04/2023]
Abstract
Isobutanol is deemed to be a next-generation biofuel and a renewable platform chemical.1 Non-natural biosynthetic pathways for isobutanol production have been implemented in cell-based and in vitro systems with Bacillus subtilis acetolactate synthase (AlsS) as key biocatalyst.2-6 AlsS catalyzes the condensation of two pyruvate molecules to acetolactate with thiamine diphosphate and Mg(2+) as cofactors. AlsS also catalyzes the conversion of 2-ketoisovalerate into isobutyraldehyde, the immediate precursor of isobutanol. Our phylogenetic analysis suggests that the ALS enzyme family forms a distinct subgroup of ThDP-dependent enzymes. To unravel catalytically relevant structure-function relationships, we solved the AlsS crystal structure at 2.3 Å in the presence of ThDP, Mg(2+) and in a transition state with a 2-lactyl moiety bound to ThDP. We supplemented our structural data by point mutations in the active site to identify catalytically important residues.
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Affiliation(s)
- Bettina Sommer
- Fachgebiet Industrielle Biokatalyse, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching (Germany)
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30
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Jin J, Qi X, Yao D, Mao B, Li J, Zhang Q, Chen C. Rational Design and Screening Study of Novel Lead Compound Based on Acetohydroxyacid Synthase Structure. Chem Biol Drug Des 2014; 84:316-24. [DOI: 10.1111/cbdd.12320] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/03/2014] [Accepted: 03/03/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Jingnan Jin
- College of Science Huazhong Agricultural University Wuhan 430070 China
| | - Xiaojuan Qi
- College of Science Huazhong Agricultural University Wuhan 430070 China
| | - Dandan Yao
- College of Science Huazhong Agricultural University Wuhan 430070 China
| | - Bangqiang Mao
- College of Science Huazhong Agricultural University Wuhan 430070 China
| | - Jianhong Li
- Department of Plant Protection Huazhong Agricultural University Wuhan 430070 China
| | - Qingye Zhang
- College of Science Huazhong Agricultural University Wuhan 430070 China
| | - Changshui Chen
- College of Science Huazhong Agricultural University Wuhan 430070 China
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31
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Baig IA, Moon JY, Kim MS, Koo BS, Yoon MY. Structural and functional significance of the highly-conserved residues in Mycobacterium tuberculosis acetohydroxyacid synthase. Enzyme Microb Technol 2014; 58-59:52-9. [DOI: 10.1016/j.enzmictec.2014.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 02/05/2014] [Accepted: 02/18/2014] [Indexed: 10/25/2022]
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32
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Délye C, Jasieniuk M, Le Corre V. Deciphering the evolution of herbicide resistance in weeds. Trends Genet 2013; 29:649-58. [DOI: 10.1016/j.tig.2013.06.001] [Citation(s) in RCA: 349] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 05/17/2013] [Accepted: 06/03/2013] [Indexed: 11/27/2022]
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33
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Baig IA, Gedi V, Lee SC, Koh SH, Yoon MY. Role of a highly conserved proline-126 in ThDP binding of Mycobacterium tuberculosis acetohydroxyacid synthase. Enzyme Microb Technol 2013; 53:243-9. [PMID: 23931689 DOI: 10.1016/j.enzmictec.2013.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 05/12/2013] [Accepted: 05/14/2013] [Indexed: 11/30/2022]
Abstract
Acetohydroxyacid synthase (AHAS) of Mycobacterium tuberculosis is a promising target for the development of anti-tuberculosis agents. With the absence of an available bacterial AHAS crystal structure, that of M. tuberculosis, site-directed mutagenesis has been a useful tool for determining its structural and functional features. In this study, a highly conserved proline residue (P126 of M. tuberculosis AHAS) was selected, and the possible role was evaluated by site-directed mutagenesis. P126 was replaced by valine, threonine, alanine, and glutamate to yield P126V, P126T, P126A, and P126E, respectively. All variants were expressed in their soluble forms in Escherichia coli and purified to near homogeneity. The molecular mass (SDS-PAGE) of the purified variants was ∼68 kDa, which is similar to that of wild-type AHAS. The P126V, P126T, and P126A variants exhibited significantly lower activity than wild-type AHAS, whereas P126E was inactive under the tested assay conditions. Furthermore, the P126V and P126T variants showed a significantly decreased preference toward pyruvate and ThDP as substrate and cofactor respectively, whereas the P126A showed similar kinetics to that of wild-type AHAS. Like in AHAS from yeast Saccharomyces cerevisiae (PDB ID: 1N0H), residue P126 is located in the ThDP binding pocket of M. tuberculosis AHAS homology model. Collectively, these results suggest that the conserved P126 plays a significant role in the ThDP binding of M. tuberculosis AHAS.
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34
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Li ZS, Wang WM, Lu W, Niu CW, Li YH, Li ZM, Wang JG. Synthesis and biological evaluation of nonsymmetrical aromatic disulfides as novel inhibitors of acetohydroxyacid synthase. Bioorg Med Chem Lett 2013; 23:3723-7. [PMID: 23726033 DOI: 10.1016/j.bmcl.2013.05.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 05/03/2013] [Accepted: 05/07/2013] [Indexed: 11/15/2022]
Abstract
46 Novel nonsymmetrical aromatic disulfides containing [1,3,4]thiadiazole or [1,3,4]oxadiazole groups were synthesized and their biological activities were evaluated as inhibitors of acetohydroxyacid synthase (AHAS, EC 2.2.1.6). Besides their strong in vitro inhibition against plant AHAS, compounds 3e and 3f also display 80-100% post-emergence herbicidal activities in greenhouse bioassay at 1500g /ha dosage. The assay of exogenous branched-chain amino acids supplementation on rape root growth of 3e suggests that the herbicidal activity has relationship with AHAS inhibition.
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Affiliation(s)
- Zai-Shun Li
- State-Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, PR China
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35
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Song XH, Ma N, Wang JG, Li YH, Wang SH, Li ZM. Synthesis and Herbicidal Activities of Sulfonylureas Bearing 1,3,4-Thiadiazole Moiety. J Heterocycl Chem 2013. [DOI: 10.1002/jhet.1063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xiang-Hai Song
- Department of Chemistry, School of Science; Tianjin University; Tianjin 300072
| | - Ning Ma
- Department of Chemistry, School of Science; Tianjin University; Tianjin 300072
| | - Jian-Guo Wang
- State Key Laboratory of Elemento Organic Chemistry, Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071
| | - Yong-Hong Li
- State Key Laboratory of Elemento Organic Chemistry, Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071
| | - Su-Hua Wang
- State Key Laboratory of Elemento Organic Chemistry, Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071
| | - Zheng-Ming Li
- State Key Laboratory of Elemento Organic Chemistry, Institute of Elemento-Organic Chemistry; Nankai University; Tianjin 300071
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36
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Lee YT, Cui CJ, Chow EWL, Pue N, Lonhienne T, Wang JG, Fraser JA, Guddat LW. Sulfonylureas Have Antifungal Activity and Are Potent Inhibitors of Candida albicans Acetohydroxyacid Synthase. J Med Chem 2012; 56:210-9. [DOI: 10.1021/jm301501k] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
| | - Chang-Jun Cui
- State-Key Laboratory and Institute
of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
| | | | | | | | - Jian-Guo Wang
- State-Key Laboratory and Institute
of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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37
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Karanth NM, Sarma SP. The Coil-to-Helix Transition in IlvN Regulates the Allosteric Control of Escherichia coli Acetohydroxyacid Synthase I. Biochemistry 2012. [DOI: 10.1021/bi301415m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- N. Megha Karanth
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, Karnataka,
India
| | - Siddhartha P. Sarma
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, Karnataka,
India
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Shang J, Wang WM, Li YH, Song HB, Li ZM, Wang JG. Synthesis, crystal structure, in vitro acetohydroxyacid synthase inhibition, in vivo herbicidal activity, and 3D-QSAR of new asymmetric aryl disulfides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:8286-8293. [PMID: 22905906 DOI: 10.1021/jf302206x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Acetohydroxyacid synthase (AHAS; EC 2.2.1.6) is an important bioactive target for the design of environmentally benign herbicides. On the basis of previous virtual screening, 50 asymmetric aryl disulfides containing [1,2,4]triazole groups were synthesized and characterized by (1)H NMR, HRMS, and crystal structure. Compounds I-a, I-b, and I-p show Ki values of 1.70, 4.69, and 5.57 μM, respectively, for wild type Arabidopsis thaliana AHAS (AtAHAS) and low resistance against mutant type AtAHAS W574L. At 100 mg L(-1) concentration, compounds I-a, II-a, and II-b exhibit 86.6, 81.7, and 87.5% in vivo rape root growth inhibition. CoMFA steric and electrostatic contour maps were established, and a possible binding mode was suggested from molecular docking, which provide valuable information to understand the key structural features of these disulfide compounds. To the authors' knowledge, this is the first comprehensive case suggesting that asymmetric aryl disulfides are novel AHAS inhibitors.
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Affiliation(s)
- Jun Shang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, China
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39
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Synthesis and evaluation of novel monosubstituted sulfonylurea derivatives as antituberculosis agents. Eur J Med Chem 2012; 50:18-26. [DOI: 10.1016/j.ejmech.2012.01.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 12/27/2011] [Accepted: 01/06/2012] [Indexed: 11/17/2022]
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40
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Li ZM, Ma Y, Guddat L, Cheng PQ, Wang JG, Pang SS, Dong YH, Lai CM, Wang LX, Jia GF, Li YH, Wang SH, Liu J, Zhao WG, Wang BL. The structure-activity relationship in herbicidal monosubstituted sulfonylureas. PEST MANAGEMENT SCIENCE 2012; 68:618-628. [PMID: 22045547 DOI: 10.1002/ps.2305] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Accepted: 08/26/2011] [Indexed: 05/31/2023]
Abstract
BACKGROUND The herbicide sulfonylurea (SU) belongs to one of the most important class of herbicides worldwide. It is well known for its ecofriendly, extreme low toxicity towards mammals and ultralow dosage application. The original inventor, G Levitt, set out structure-activity relationship (SAR) guidelines for SU structural design to attain superhigh bioactivity. A new approach to SU molecular design has been developed. RESULTS After the analysis of scores of SU products by X-ray diffraction methodology and after greenhouse herbicidal screening of 900 novel SU structures synthesised in the authors' laboratory, it was found that several SU structures containing a monosubstituted pyrimidine moiety retain excellent herbicidal characteristics, which has led to partial revision of the Levitt guidelines. CONCLUSIONS Among the novel SU molecules, monosulfuron and monosulfuron-ester have been developed into two new herbicides that have been officially approved for field application and applied in millet and wheat fields in China. A systematic structural study of the new substrate-target complex and the relative mode of action in comparison with conventional SU has been carried out. A new mode of action has been postulated.
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Affiliation(s)
- Zheng-Ming Li
- National Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, China.
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41
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Kumari S, van der Hoorn RAL. A structural biology perspective on bioactive small molecules and their plant targets. CURRENT OPINION IN PLANT BIOLOGY 2011; 14:480-8. [PMID: 21803639 DOI: 10.1016/j.pbi.2011.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 06/01/2011] [Accepted: 06/14/2011] [Indexed: 05/08/2023]
Abstract
Structural biology efforts in recent years have generated numerous co-crystal structures of bioactive small molecules interacting with their plant targets. These studies include the targets of various phytohormones, pathogen-derived effectors, herbicides and other bioactive compounds. Here we discuss that this collection of structures contains excellent examples of nine collective observations: molecular glues, allostery, inhibitors, molecular mimicry, promiscuous binding sites, unexpected electron densities, natural selection at atomic resolution, and applications in structure-guided mutagenesis and small molecule design.
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Affiliation(s)
- Selva Kumari
- Plant Chemetics Lab, Chemical Genomics Centre of the Max Planck Society, Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany
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42
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Wang J, Tan H, Li Y, Ma Y, Li Z, Guddat LW. Chemical synthesis, in vitro acetohydroxyacid synthase (AHAS) inhibition, herbicidal activity, and computational studies of isatin derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:9892-9900. [PMID: 21838297 DOI: 10.1021/jf2021607] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Acetohydroxyacid synthase (AHAS) catalyzes the first common step in the biosynthesis of the branched-chain amino acids. As a result of its metabolic importance in plants, it is a target for many commercial herbicides. Virtual screening analysis inspired the evaluation of 19 commercially available isatin analogues and 13 newly synthesized isatin derivatives as novel AHAS inhibitors and for their herbicidal activity. The best compound demonstrated 95% inhibition of the activity of Arabidopsis thaliana AHAS at a concentration of 100 mg L(-1), whereas the herbicidal activities of three compounds reached 50% inhibition at a concentration of 10 mg L(-1) using the rape root growth test. CoMFA contour models were established to understand the structure-activity relationships for this class of AHAS inhibitor. The compounds were docked to the active site cavity of A. thaliana AHAS using FlexX, and the dominant binding mode was consistent with frontier molecular orbital from DFT calculations. This is the first comprehensive study of isatin derivatives as AHAS inhibitors and provides a valuable starting point for the design of new herbicides.
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Affiliation(s)
- Jianguo Wang
- State-Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China.
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43
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Herbst KJ, Coltharp C, Amzel LM, Zhang J. Direct activation of Epac by sulfonylurea is isoform selective. ACTA ACUST UNITED AC 2011; 18:243-51. [PMID: 21338921 DOI: 10.1016/j.chembiol.2010.12.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 11/12/2010] [Accepted: 12/13/2010] [Indexed: 11/18/2022]
Abstract
Commonly used as a treatment for Type II diabetes, sulfonylureas (SUs) stimulate insulin secretion from pancreatic β cells by binding to sulfonylurea receptors. Recently, SUs have been shown to also activate exchange protein directly activated by cAMP 2 (Epac2), however, little is known about this molecular action. Using biosensor imaging and biochemical analysis, we show that SUs activate Epac2 and the downstream signaling via direct binding to Epac2. We further identify R447 of Epac2 to be critically involved in SU binding. This distinct binding site from cAMP points to a new mode of allosteric activation of Epac2. We also show that SUs selectively activate Epac2 isoform, but not the closely related Epac1, further establishing SUs as a new class of isoform-selective enzyme activators.
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Affiliation(s)
- Katie J Herbst
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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44
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Vyazmensky M, Steinmetz A, Meyer D, Golbik R, Barak Z, Tittmann K, Chipman DM. Significant Catalytic Roles for Glu47 and Gln 110 in All Four of the C−C Bond-Making and -Breaking Steps of the Reactions of Acetohydroxyacid Synthase II. Biochemistry 2011; 50:3250-60. [DOI: 10.1021/bi102051h] [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)
- Maria Vyazmensky
- Ben-Gurion University of the Negev, Department of Life Sciences, Beer-Sheva 84105, Israel
| | - Andrea Steinmetz
- Georg-August University Göttingen, Albrecht-von-Haller-Institute and Göttingen Centre for Molecular Biosciences, Ernst-Caspari-Haus, Department of Bioanalytics, Justus-von-Liebig Weg 11, 37077 Göttingen, Germany
- Martin-Luther University Halle-Wittenberg, Institute for Biochemistry and Biotechnology, Kurt-Mothes-Strasse 3, 06120 Halle/Saale, Germany
| | - Danilo Meyer
- Georg-August University Göttingen, Albrecht-von-Haller-Institute and Göttingen Centre for Molecular Biosciences, Ernst-Caspari-Haus, Department of Bioanalytics, Justus-von-Liebig Weg 11, 37077 Göttingen, Germany
- Martin-Luther University Halle-Wittenberg, Institute for Biochemistry and Biotechnology, Kurt-Mothes-Strasse 3, 06120 Halle/Saale, Germany
| | - Ralph Golbik
- Martin-Luther University Halle-Wittenberg, Institute for Biochemistry and Biotechnology, Kurt-Mothes-Strasse 3, 06120 Halle/Saale, Germany
| | - Ze'ev Barak
- Ben-Gurion University of the Negev, Department of Life Sciences, Beer-Sheva 84105, Israel
| | - Kai Tittmann
- Georg-August University Göttingen, Albrecht-von-Haller-Institute and Göttingen Centre for Molecular Biosciences, Ernst-Caspari-Haus, Department of Bioanalytics, Justus-von-Liebig Weg 11, 37077 Göttingen, Germany
- Martin-Luther University Halle-Wittenberg, Institute for Biochemistry and Biotechnology, Kurt-Mothes-Strasse 3, 06120 Halle/Saale, Germany
| | - David M. Chipman
- Ben-Gurion University of the Negev, Department of Life Sciences, Beer-Sheva 84105, Israel
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