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Li Z, Yang B, Ding Y, Zhou X, Fang Z, Liu S, Yang J, Yang S. Discovery of phosphonate derivatives containing different substituted 1,2,3-triazole motif as promising tobacco mosaic virus (TMV) helicase inhibitors for controlling plant viral diseases. PEST MANAGEMENT SCIENCE 2023; 79:3979-3992. [PMID: 37271938 DOI: 10.1002/ps.7592] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/29/2023] [Accepted: 06/05/2023] [Indexed: 06/06/2023]
Abstract
BACKGROUND The discovery and identification of targets is of far-reaching significance for developing novel pesticide candidates and increasing the probability of success. To explore and identify highly effective tobacco mosaic virus (TMV) helicase-targeted lead structures, a series of novel phosphonate derivatives containing a 1,2,3-triazole motif were rationally engineered and their antiviral activity was assessed. RESULTS Bioassay results showed that the optimized B17 exhibited more potent curative activity (EC50 = 271.5 μg mL-1 ) against TMV in vivo, which was superior to that of commercial Ribavirin (EC50 = 689.3 μg mL-1 ). B17 presented a stronger binding capacity through binding analysis with helicase, affording a corresponding value of 12.7 μM. Enzyme activity assay showed B17 exhibited excellent inhibitory activity on TMV helicase (39.2% at 300 μM). Furthermore, molecular docking simulations demonstrated that B17 displayed strong hydrogen-bond interactions (2.1, 2.1, 2.2, and 3.2 Å) with Ala-33, Gly-10, Gly-8, and Glu-217 of TMV helicase. Encouragingly, transmission electron microscopy analysis revealed that B17 could remarkably disrupt surface morphology and inhibit TMV proliferation. Additionally, these compounds also displayed potential anti-CMV (cucumber mosaic virus) and antipathogens (Xanthomonas oryzae pv. oryzae and Xanthomonas axonopodis pv. citri) by expanding their applications in agriculture. CONCLUSION Current research demonstrated that B17 could be considered as a potential antiviral agent alternative though targeting TMV helicase. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Zhenxing Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Binxin Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Yue Ding
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Xiang Zhou
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Zimian Fang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - ShuaiShuai Liu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Jie Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
| | - Song Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals, Guizhou University, Guiyang, China
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Zhao G, Zhang W, Fu X, Xie X, Bai S, Li X. Synthesis and Screening of Chemical Agents Targeting Viral Protein Genome-Linked Protein of Telosma Mosaic Virus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:13645-13653. [PMID: 37676131 DOI: 10.1021/acs.jafc.3c02823] [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: 09/08/2023]
Abstract
The viral protein genome-linked protein (VPg) of telosma mosaic virus (TeMV) plays an important role in viral reproduction. In this study, the expression conditions of TeMV VPg were explored. A series of novel benzenesulfonamide derivatives were synthesized. The binding sites of the target compounds and TeMV VPg were studied by molecular docking, and the interaction was verified by microscale thermophoresis. The study revealed that the optimal expression conditions for TeMV VPg were in Escherichia coli Rosetta with IPTG concentration of 0.8 mM and induction temperature of 25 °C. Compounds A4, A6, A9, A16, and A17 exhibited excellent binding affinity to TeMV VPg, with Kd values of 0.23, 0.034, 0.19, 0.086, and 0.22 μM, respectively. LYS 121 is the key amino acid site. Compounds A9 inhibited the expression of TeMV VPg in Nicotiana benthamiana. The results suggested that TeMV VPg is a potential antiviral target to screen anti-TeMV compounds.
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Affiliation(s)
- Guili Zhao
- School of Chemical Engineering, Guizhou Institute of Technology, Guiyang 550025, China
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Wenjuan Zhang
- School of Chemical Engineering, Guizhou Institute of Technology, Guiyang 550025, China
| | - Xiaodong Fu
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xin Xie
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Song Bai
- School of Chemical Engineering, Guizhou Institute of Technology, Guiyang 550025, China
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
- Guizhou Industry Polytechnic College, Guiyang 550008, China
| | - Xiangyang Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
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Wang C, Ma G, Zhang S, Zhao K, Li X. Study on the binding of ningnanmycin to the helicase of Tobamovirus virus. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 194:105494. [PMID: 37532353 DOI: 10.1016/j.pestbp.2023.105494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/04/2023] [Accepted: 06/07/2023] [Indexed: 08/04/2023]
Abstract
The Tobamovirus helicase plays an important role in virus proliferation and host interaction. They can also be targets for antiviral drugs. Tobacco mosaic virus (TMV) is well controlled by ningnanmycin (NNM), but whether it acts on other virus helicases of Tobamovirus virus is not clear. In this study, we expressed and purified several Tobamovirus virus helicase proteins and analyzed the three-dimensional structures of several Tobamovirus virus helicases. In addition, the binding of Tobamovirus helicase to NNM was also studied. The docking study reveals the interaction between NNM and Tobamovirus virus helicase. Microscale Thermophoresis (MST) experiments have shown that NNM binds to Tobamovirus helicase with a dissociation constant of 4.64-12.63 μM. Therefore, these data are of great significance for the design and synthesis of new effective anti-plant virus drugs.
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Affiliation(s)
- Chen Wang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Guangming Ma
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Shanqi Zhang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Kunhong Zhao
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Xiangyang Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China.
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4
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The Discovery of Novel Ferulic Acid Derivatives Incorporating Substituted Isopropanolamine Moieties as Potential Tobacco Mosaic Virus Helicase Inhibitors. Int J Mol Sci 2022; 23:ijms232213991. [PMID: 36430473 PMCID: PMC9698358 DOI: 10.3390/ijms232213991] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 11/16/2022] Open
Abstract
Target-based drug design, a high-efficiency strategy used to guide the development of novel pesticide candidates, has attracted widespread attention. Herein, various natural-derived ferulic acid derivatives incorporating substituted isopropanolamine moieties were designed to target the tobacco mosaic virus (TMV) helicase. Bioassays demonstrating the optimized A19, A20, A29, and A31 displayed excellent in vivo antiviral curative abilities, affording corresponding EC50 values of 251.1, 336.2, 347.1, and 385.5 μg/mL, which visibly surpassed those of commercial ribavirin (655.0 μg/mL). Moreover, configurational analysis shows that the R-forms of target compounds were more beneficial to aggrandize antiviral profiles. Mechanism studies indicate that R-A19 had a strong affinity (Kd = 5.4 μM) to the TMV helicase and inhibited its ability to hydrolyze ATP (50.61% at 200 μM). Meanwhile, A19 could down-regulate the expression of the TMV helicase gene in the host to attenuate viral replication. These results illustrate the excellent inhibitory activity of A19 towards the TMV helicase. Additionally, docking simulations uncovered that R-A19 formed more hydrogen bonds with the TMV helicase in the binding pocket. Recent studies have unambiguously manifested that these designed derivatives could be considered as promising potential helicase-based inhibitors for plant disease control.
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Abstract
Immunoprecipitation, commonly referred to as IP, involves the binding of proteinaceous antigen in solution by an antigen-specific antibody followed by purification of the antigen-antibody complex via attachment to a solid-phase matrix such as Protein A or G agarose. This rather simplistic and rapid technique yields highly purified immune complexes from multifactorial solutions, including cell lysates or homogenized tissues, and is most commonly used to identify and determine the relative abundance of interacting proteins, referred to as coimmunoprecipitation or co-IP. Although methods encompassing immunoblotting or western blotting of cell lysate preparations can also be applied to determine the presence and quantity of a specific antigen, its relative molecular weight, rate of synthesis or degradation, and state of target-specific posttranslational modification, immunoprecipitation can significantly increase the sensitivity for these methodologies.
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Wang D, Huang M, Gao D, Chen K, Xinxie, Xu W, Li X. Screening anti-TMV agents targeting tobacco mosaic virus helicase protein. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 166:104449. [PMID: 32448412 DOI: 10.1016/j.pestbp.2019.07.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/29/2019] [Accepted: 07/13/2019] [Indexed: 06/11/2023]
Abstract
Tobacco mosaic virus helicase (TMV-Hel) plays important roles in viral multiplication. TMV-Hel is a potential target of anti-TMV agents. Our previous studies expressed and purified TMV-Hel as target protein for cytosinpeptidemycin. In this study, we preform molecular docking to study the binding sites of commercial antiviral agents with TMV-Hel. Then we verify the interactions between the potential anti-TMV agents and TMV-Hel in vitro using Microscale Thermophoresis experiment and study the inhibiting expression of TMV-Hel with the potential anti-TMV agents in vivo using Western-blot (WB) method. The results showed that ribavirin bound to TMV-Hel with a dissociation constant of 1.55 μM by direct interaction with eight binding sites, which was consistent with the docking studies. Ribavirin inhibited the expression of TMV-Hel in Nicotiana benthamiana. Docking studies combined Microscale Thermophoresis and WB experiment provided a new method to screen anti-TMV agents targeting TMV-Hel.
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Affiliation(s)
- Dongmei Wang
- 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, PR China
| | - Maoxi Huang
- 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, PR China
| | - Di Gao
- 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, PR China
| | - Kai Chen
- 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, PR China
| | - Xinxie
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, PR China
| | - Weiming Xu
- 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, PR China.
| | - 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, PR China.
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Rubio B, Cosson P, Caballero M, Revers F, Bergelson J, Roux F, Schurdi-Levraud V. Genome-wide association study reveals new loci involved in Arabidopsis thaliana and Turnip mosaic virus (TuMV) interactions in the field. THE NEW PHYTOLOGIST 2019; 221:2026-2038. [PMID: 30282123 DOI: 10.1111/nph.15507] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 09/18/2018] [Indexed: 05/12/2023]
Abstract
The genetic architecture of plant response to viruses has often been studied in model nonnatural pathosystems under controlled conditions. There is an urgent need to elucidate the genetic architecture of the response to viruses in a natural setting. A field experiment was performed in each of two years. In total, 317 Arabidopsis thaliana accessions were inoculated with its natural Turnip mosaic virus (TuMV). The accessions were phenotyped for viral accumulation, frequency of infected plants, stem length and symptoms. Genome-wide association mapping was performed. Arabidopsis thaliana exhibits extensive natural variation in its response to TuMV in the field. The underlying genetic architecture reveals a more quantitative picture than in controlled conditions. Ten genomic regions were consistently identified across the two years. RTM3 (Restricted TEV Movement 3) is a major candidate for the response to TuMV in the field. New candidate genes include Dead box helicase 1, a Tim Barrel domain protein and the eukaryotic translation initiation factor eIF3b. To our knowledge, this study is the first to report the genetic architecture of quantitative response of A. thaliana to a naturally occurring virus in a field environment, thereby highlighting relevant candidate genes involved in plant virus interactions in nature.
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Affiliation(s)
- Bernadette Rubio
- Univ. Bordeaux INRA, UMR Biologie du Fruit et Pathologie, 1332, 71 avenue Edouard Bourlaux, 33883, Villenave d'Ornon cedex, France
| | - Patrick Cosson
- Univ. Bordeaux INRA, UMR Biologie du Fruit et Pathologie, 1332, 71 avenue Edouard Bourlaux, 33883, Villenave d'Ornon cedex, France
| | - Mélodie Caballero
- Univ. Bordeaux INRA, UMR Biologie du Fruit et Pathologie, 1332, 71 avenue Edouard Bourlaux, 33883, Villenave d'Ornon cedex, France
| | - Frédéric Revers
- INRA, UMR 1202 BIOGECO, Université de Bordeaux, 69 Route d'Arcachon, 33612, Cestas Cedex, France
| | - Joy Bergelson
- Ecology & Evolution, University of Chicago, 1101 E 57th St, Chicago, IL, 60637, USA
| | - Fabrice Roux
- LIPM, INRA, CNRS, Université de Toulouse, Castanet-Tolosan, France
| | - Valérie Schurdi-Levraud
- Univ. Bordeaux INRA, UMR Biologie du Fruit et Pathologie, 1332, 71 avenue Edouard Bourlaux, 33883, Villenave d'Ornon cedex, France
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Kobayashi C, Kato M, Nagaya H, Shimizu N, Ishibashi K, Ishikawa M, Katoh E. Purification and functional characterization of tomato mosaic virus 130K protein expressed in silkworm pupae using a baculovirus vector. Protein Expr Purif 2018; 154:85-90. [PMID: 30291968 DOI: 10.1016/j.pep.2018.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 10/01/2018] [Accepted: 10/01/2018] [Indexed: 01/21/2023]
Abstract
Tomato mosaic virus (ToMV; genus, Tobamovirus) is a member of the alpha-like virus superfamily of positive-strand RNA viruses, which includes many plant and animal viruses of agronomical and clinical importance. The genomes of alpha-like viruses encode replication-associated proteins that contain methyltransferase, helicase and/or polymerase domains. The three-dimensional structure of the helicase domain fragment of ToMV has been determined, but the structures of the other domains of alpha-like virus replication proteins are not available. In this study, we expressed full-length ToMV replication-associated protein 130 K, which contains the methyltransferase and helicase domains, using the baculovirus-silkworm expression system and purified the recombinant protein to near homogeneity. Purified 130 K, which was stable in phosphate buffer containing magnesium ions and ATP, formed a dimer in solution and hydrolyzed nucleoside 5'-triphosphates.
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Affiliation(s)
- Chihoko Kobayashi
- Structural Biology Team, Advanced Analysis Center, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8602, Japan
| | - Masahiko Kato
- Business Development, Research and Industry Business, Sysmex Corporation, Kobe, Hyogo, 651-2241, Japan
| | - Hidekazu Nagaya
- Business Development, Research and Industry Business, Sysmex Corporation, Kobe, Hyogo, 651-2241, Japan
| | - Nobutaka Shimizu
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan
| | - Kazuhiro Ishibashi
- Plant and Microbial Research Unit, Institute of Agrobiological Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8602, Japan
| | - Masayuki Ishikawa
- Plant and Microbial Research Unit, Institute of Agrobiological Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8602, Japan
| | - Etsuko Katoh
- Structural Biology Team, Advanced Analysis Center, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, 305-8602, Japan.
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[Virus resistance genes in plants]. Uirusu 2018; 68:13-20. [PMID: 31105131 DOI: 10.2222/jsv.68.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Plants defend themselves from virus infection by RNA silencing and resistance (R) gene-mediated mechanisms. Many dominant R genes encode nucleotide-binding site and leucine-rich repeat (NB-LRR)-containing proteins. NB-LRR proteins are also encoded by R genes against bacteria or fungi, suggesting a similar mechanism underlies defense systems to diverse pathogens. In contrast, several non-NB-LRR-type R genes have recently been cloned, each of which differs from others in sequences and functions. In this review, we introduce a diversity of R gene-mediated plant defense systems against viruses. Tm-1, JAX1, and Scmv1, resistance genes against tomato mosaic virus, potexviruses, and sugarcane mosaic virus, respectively, inhibit virus multiplication at a single cell level. The RTM1, RTM2, RTM3 genes of Arabidopsis thaliana inhibit systemic transport of potyviruses through the phloem. STV11 of rice against rice stripe virus and Ty-1 and Ty-3 genes of tomato against tomato yellow leaf curl virus allow low level virus multiplication and confer tolerance. The wide diversity of plant defense systems against viruses implies their recent emergence. We suggest that plants evolved new defense systems to counter infection by viruses that had overcome pre-existing defense systems (RNA silencing and NB-LRR-type R gene-mediated systems).
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Li X, Chen K, Gao D, Wang D, Huang M, Zhu H, Kang J. Binding studies between cytosinpeptidemycin and the superfamily 1 helicase protein of tobacco mosaic virus. RSC Adv 2018; 8:18952-18958. [PMID: 35539684 PMCID: PMC9080650 DOI: 10.1039/c8ra01466c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 05/14/2018] [Indexed: 11/21/2022] Open
Abstract
Tobacco mosaic virus (TMV) helicases play important roles in viral multiplication and interactions with host organisms. They can also be targeted by antiviral agents. Cytosinpeptidemycin has a good control effect against TMV. However, the mechanism of action is unclear. In this study, we expressed and purified TMV superfamily 1 helicase (TMV-Hel) and analyzed its three-dimensional structure. Furthermore, the binding interactions of TMV-Hel and cytosinpeptidemycin were studied. Microscale thermophoresis and isothermal titration calorimetry experiments showed that cytosinpeptidemycin bound to TMV-Hel with a dissociation constant of 0.24–0.44 μM. Docking studies provided further insights into the interaction of cytosinpeptidemycin with the His375 of TMV-Hel. Mutational and Microscale thermophoresis analyses showed that cytosinpeptidemycin bound to a TMV-Hel mutant (H375A) with a dissociation constant of 14.5 μM. Thus, His375 may be the important binding site for cytosinpeptidemycin. The data are important for designing and synthesizing new effective antiphytoviral agents. Tobacco mosaic virus (TMV) helicases play important roles in viral multiplication and interactions with host organisms.![]()
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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
| | - Kai Chen
- 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
| | - Di Gao
- 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
| | - Dongmei Wang
- 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
| | - Maoxi Huang
- 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
| | - Hengmin Zhu
- 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
| | - Jinxin Kang
- 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
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Gouveia BC, Calil IP, Machado JPB, Santos AA, Fontes EPB. Immune Receptors and Co-receptors in Antiviral Innate Immunity in Plants. Front Microbiol 2017; 7:2139. [PMID: 28105028 PMCID: PMC5214455 DOI: 10.3389/fmicb.2016.02139] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/19/2016] [Indexed: 01/19/2023] Open
Abstract
Plants respond to pathogens using an innate immune system that is broadly divided into PTI (pathogen-associated molecular pattern- or PAMP-triggered immunity) and ETI (effector-triggered immunity). PTI is activated upon perception of PAMPs, conserved motifs derived from pathogens, by surface membrane-anchored pattern recognition receptors (PRRs). To overcome this first line of defense, pathogens release into plant cells effectors that inhibit PTI and activate effector-triggered susceptibility (ETS). Counteracting this virulence strategy, plant cells synthesize intracellular resistance (R) proteins, which specifically recognize pathogen effectors or avirulence (Avr) factors and activate ETI. These coevolving pathogen virulence strategies and plant resistance mechanisms illustrate evolutionary arms race between pathogen and host, which is integrated into the zigzag model of plant innate immunity. Although antiviral immune concepts have been initially excluded from the zigzag model, recent studies have provided several lines of evidence substantiating the notion that plants deploy the innate immune system to fight viruses in a manner similar to that used for non-viral pathogens. First, most R proteins against viruses so far characterized share structural similarity with antibacterial and antifungal R gene products and elicit typical ETI-based immune responses. Second, virus-derived PAMPs may activate PTI-like responses through immune co-receptors of plant PTI. Finally, and even more compelling, a viral Avr factor that triggers ETI in resistant genotypes has recently been shown to act as a suppressor of PTI, integrating plant viruses into the co-evolutionary model of host-pathogen interactions, the zigzag model. In this review, we summarize these important progresses, focusing on the potential significance of antiviral immune receptors and co-receptors in plant antiviral innate immunity. In light of the innate immune system, we also discuss a newly uncovered layer of antiviral defense that is specific to plant DNA viruses and relies on transmembrane receptor-mediated translational suppression for defense.
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Affiliation(s)
- Bianca C. Gouveia
- Department of Biochemistry and Molecular Biology, BIOAGRO, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de ViçosaViçosa, Brazil
| | - Iara P. Calil
- Department of Biochemistry and Molecular Biology, BIOAGRO, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de ViçosaViçosa, Brazil
| | - João Paulo B. Machado
- Department of Biochemistry and Molecular Biology, BIOAGRO, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de ViçosaViçosa, Brazil
| | - Anésia A. Santos
- Department of General Biology, BIOAGRO, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de ViçosaViçosa, Brazil
| | - Elizabeth P. B. Fontes
- Department of Biochemistry and Molecular Biology, BIOAGRO, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de ViçosaViçosa, Brazil
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Yang Z, Liu L, Fang H, Li P, Xu S, Cao W, Xu C, Huang J, Zhou Y. Origin of the plant Tm-1-like gene via two independent horizontal transfer events and one gene fusion event. Sci Rep 2016; 6:33691. [PMID: 27647002 PMCID: PMC5028733 DOI: 10.1038/srep33691] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/31/2016] [Indexed: 01/07/2023] Open
Abstract
The Tomato mosaic virus (ToMV) resistance gene Tm-1 encodes a direct inhibitor of ToMV RNA replication to protect tomato from infection. The plant Tm-1-like (Tm-1L) protein is predicted to contain an uncharacterized N-terminal UPF0261 domain and a C-terminal TIM-barrel signal transduction (TBST) domain. Homologous searches revealed that proteins containing both of these two domains are mainly present in charophyte green algae and land plants but absent from glaucophytes, red algae and chlorophyte green algae. Although Tm-1 homologs are widely present in bacteria, archaea and fungi, UPF0261- and TBST-domain-containing proteins are generally encoded by different genes in these linages. A co-evolution analysis also suggested a putative interaction between UPF0261- and TBST-domain-containing proteins. Phylogenetic analyses based on homologs of these two domains revealed that plants have acquired UPF0261- and TBST-domain-encoding genes through two independent horizontal gene transfer (HGT) events before the origin of land plants from charophytes. Subsequently, gene fusion occurred between these two horizontally acquired genes and resulted in the origin of the Tm-1L gene in streptophytes. Our results demonstrate a novel evolutionary mechanism through which the recipient organism may acquire genes with functional interaction through two different HGT events and further fuse them into one functional gene.
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Affiliation(s)
- Zefeng Yang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Li Liu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Huimin Fang
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Pengcheng Li
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Shuhui Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Wei Cao
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Chenwu Xu
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Jinling Huang
- Department of Biology, East Carolina University, Greenville, NC, 27858, USA
| | - Yong Zhou
- Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
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13
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Ishibashi K, Ishikawa M. Mechanisms of tomato mosaic virus RNA replication and its inhibition by the host resistance factor Tm-1. Curr Opin Virol 2014; 9:8-13. [PMID: 25212767 DOI: 10.1016/j.coviro.2014.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 08/22/2014] [Accepted: 08/24/2014] [Indexed: 12/14/2022]
Abstract
In the plant immune system, sensor proteins encoded by dominant resistance genes activate a defense response upon pathogen infection. The tomato mosaic virus (ToMV) resistance gene Tm-1 is exceptional in that it inhibits ToMV multiplication without inducing a defense response. Several lines of evidence had suggested that Tm-1 encodes a direct inhibitor of ToMV RNA replication. The Tm-1 gene product was identified by purification of an inhibitor protein using a cell-free translation and replication system for ToMV RNA. Further analyses using the system showed that Tm-1 bound ToMV replication proteins, and that the Tm-1-bound ToMV replication proteins retained the ability to bind membranes, while Tm-1 inhibited replication complex formation on the membranes.
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Affiliation(s)
- Kazuhiro Ishibashi
- Plant-Microbe Interactions Research Unit, Division of Plant Sciences, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan.
| | - Masayuki Ishikawa
- Plant-Microbe Interactions Research Unit, Division of Plant Sciences, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan
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14
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Structural basis for the recognition-evasion arms race between Tomato mosaic virus and the resistance gene Tm-1. Proc Natl Acad Sci U S A 2014; 111:E3486-95. [PMID: 25092327 DOI: 10.1073/pnas.1407888111] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The tomato mosaic virus (ToMV) resistance gene Tm-1 encodes a protein that shows no sequence homology to functionally characterized proteins. Tm-1 binds ToMV replication proteins and thereby inhibits replication complex formation. ToMV mutants that overcome this resistance have amino acid substitutions in the helicase domain of the replication proteins (ToMV-Hel). A small region of Tm-1 in the genome of the wild tomato Solanum habrochaites has been under positive selection during its antagonistic coevolution with ToMV. Here we report crystal structures for the N-terminal inhibitory domains of Tm-1 and a natural Tm-1 variant with an I91-to-T substitution that has a greater ability to inhibit ToMV RNA replication and their complexes with ToMV-Hel. Each complex contains a Tm-1 dimer and two ToMV-Hel monomers with the interfaces between Tm-1 and ToMV-Hel bridged by ATP. Residues in ToMV-Hel and Tm-1 involved in antagonistic coevolution are found at the interface. The structural differences between ToMV-Hel in its free form and in complex with Tm-1 suggest that Tm-1 affects nucleoside triphosphatase activity of ToMV-Hel, and this effect was confirmed experimentally. Molecular dynamics simulations of complexes formed by Tm-1 with ToMV-Hel variants showed how the amino acid changes in ToMV-Hel impair the interaction with Tm-1 to overcome the resistance. With these findings, together with the biochemical properties of the interactions between ToMV-Hel and Tm-1 variants and effects of the mutations in the polymorphic residues of Tm-1, an atomic view of a step-by-step coevolutionary arms race between a plant resistance protein and a viral protein emerges.
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15
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de Ronde D, Butterbach P, Kormelink R. Dominant resistance against plant viruses. FRONTIERS IN PLANT SCIENCE 2014; 5:307. [PMID: 25018765 PMCID: PMC4073217 DOI: 10.3389/fpls.2014.00307] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 06/10/2014] [Indexed: 05/17/2023]
Abstract
To establish a successful infection plant viruses have to overcome a defense system composed of several layers. This review will overview the various strategies plants employ to combat viral infections with main emphasis on the current status of single dominant resistance (R) genes identified against plant viruses and the corresponding avirulence (Avr) genes identified so far. The most common models to explain the mode of action of dominant R genes will be presented. Finally, in brief the hypersensitive response (HR) and extreme resistance (ER), and the functional and structural similarity of R genes to sensors of innate immunity in mammalian cell systems will be described.
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Affiliation(s)
- Dryas de Ronde
- Laboratory of Virology, Department of Plant Sciences, Wageningen University Wageningen, Netherlands
| | - Patrick Butterbach
- Laboratory of Virology, Department of Plant Sciences, Wageningen University Wageningen, Netherlands
| | - Richard Kormelink
- Laboratory of Virology, Department of Plant Sciences, Wageningen University Wageningen, Netherlands
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16
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Kato M, Kezuka Y, Kobayashi C, Ishibashi K, Nonaka T, Ishikawa M, Katoh E. Crystallization and preliminary X-ray crystallographic analysis of the inhibitory domain of the tomato mosaic virus resistance protein Tm-1. Acta Crystallogr Sect F Struct Biol Cryst Commun 2013; 69:1411-4. [PMID: 24316842 PMCID: PMC3855732 DOI: 10.1107/s1744309113030819] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 11/09/2013] [Indexed: 11/30/2022]
Abstract
Tm-1, an inhibitor protein of Tomato mosaic virus RNA replication, contains two conserved domains: an uncharacterized domain at its N-terminus and a TIM-barrel-like domain at its C-terminus. The N-terminal domain of Tm-1 has an inhibitory activity and its three-dimensional structure has not been determined. Here, the crystallization and preliminary X-ray diffraction of the N-terminal domain of Tm-1 are reported. A three-wavelength MAD data set was collected from a selenomethionine-labelled crystal and processed to 2.7 Å resolution. The crystal belonged to the triclinic space group P1, with unit-cell parameters a = 77.97, b = 105.28, c = 110.62 Å, α = 94.6, β = 109.3, γ = 108.0°.
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Affiliation(s)
- Masahiko Kato
- Biomolecular Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-0856, Japan
| | - Yuichiro Kezuka
- Department of Structural Biology, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Chihoko Kobayashi
- Biomolecular Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-0856, Japan
| | - Kazuhiro Ishibashi
- Plant–Microbe Interactions Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan
| | - Takamasa Nonaka
- Department of Structural Biology, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Masayuki Ishikawa
- Plant–Microbe Interactions Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, Japan
| | - Estuko Katoh
- Biomolecular Research Unit, National Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-0856, Japan
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