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Renthal R, Chen LY. Tunnel connects lipid bilayer to occluded odorant-binding site of insect olfactory receptor. Biophys Chem 2022; 289:106862. [DOI: 10.1016/j.bpc.2022.106862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022]
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2
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Cao S, Liu Y, Wang G. Protocol to identify ligands of odorant receptors using two-electrode voltage clamp combined with the Xenopus oocytes heterologous expression system. STAR Protoc 2022; 3:101249. [PMID: 35310077 PMCID: PMC8931473 DOI: 10.1016/j.xpro.2022.101249] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Two-electrode voltage clamp (TEVC) combined with the Xenopus laevis oocytes heterologous expression system is a powerful electrophysiological tool widely used to study the properties of many transmembrane proteins. Here, we describe a protocol using this combined approach to identify the ligands of odorant receptors that form ligand-gated ion channels. We detail the procedures for site-directed mutagenesis, oocyte microinjection, and TEVC recording. This protocol can also be used to identify the key residues and illustrate the structure-function relationships of these proteins. For complete details on the use and execution of this protocol, please refer to Cao et al. (2021).
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Affiliation(s)
- Song Cao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.,Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Yang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Guirong Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.,Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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3
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Mier P, Fontaine JF, Stoldt M, Libbrecht R, Martelli C, Foitzik S, Andrade-Navarro MA. Annotation and Analysis of 3902 Odorant Receptor Protein Sequences from 21 Insect Species Provide Insights into the Evolution of Odorant Receptor Gene Families in Solitary and Social Insects. Genes (Basel) 2022; 13:genes13050919. [PMID: 35627304 PMCID: PMC9141868 DOI: 10.3390/genes13050919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/17/2022] [Accepted: 05/19/2022] [Indexed: 11/26/2022] Open
Abstract
The gene family of insect olfactory receptors (ORs) has expanded greatly over the course of evolution. ORs enable insects to detect volatile chemicals and therefore play an important role in social interactions, enemy and prey recognition, and foraging. The sequences of several thousand ORs are known, but their specific function or their ligands have only been identified for very few of them. To advance the functional characterization of ORs, we have assembled, curated, and aligned the sequences of 3902 ORs from 21 insect species, which we provide as an annotated online resource. Using functionally characterized proteins from the fly Drosophila melanogaster, the mosquito Anopheles gambiae and the ant Harpegnathos saltator, we identified amino acid positions that best predict response to ligands. We examined the conservation of these predicted relevant residues in all OR subfamilies; the results showed that the subfamilies that expanded strongly in social insects had a high degree of conservation in their binding sites. This suggests that the ORs of social insect families are typically finely tuned and exhibit sensitivity to very similar odorants. Our novel approach provides a powerful tool to exploit functional information from a limited number of genes to study the functional evolution of large gene families.
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Affiliation(s)
- Pablo Mier
- Institute of Organismic and Molecular Evolution (iomE), Faculty of Biology, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany; (J.-F.F.); (M.S.); (R.L.); (S.F.); (M.A.A.-N.)
- Correspondence:
| | - Jean-Fred Fontaine
- Institute of Organismic and Molecular Evolution (iomE), Faculty of Biology, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany; (J.-F.F.); (M.S.); (R.L.); (S.F.); (M.A.A.-N.)
| | - Marah Stoldt
- Institute of Organismic and Molecular Evolution (iomE), Faculty of Biology, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany; (J.-F.F.); (M.S.); (R.L.); (S.F.); (M.A.A.-N.)
| | - Romain Libbrecht
- Institute of Organismic and Molecular Evolution (iomE), Faculty of Biology, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany; (J.-F.F.); (M.S.); (R.L.); (S.F.); (M.A.A.-N.)
| | - Carlotta Martelli
- Institute of Developmental Biology and Neurobiology (iDN), Faculty of Biology, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany;
| | - Susanne Foitzik
- Institute of Organismic and Molecular Evolution (iomE), Faculty of Biology, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany; (J.-F.F.); (M.S.); (R.L.); (S.F.); (M.A.A.-N.)
| | - Miguel A. Andrade-Navarro
- Institute of Organismic and Molecular Evolution (iomE), Faculty of Biology, Johannes Gutenberg University Mainz, Hanns-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany; (J.-F.F.); (M.S.); (R.L.); (S.F.); (M.A.A.-N.)
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4
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Cao S, Liu Y, Wang B, Wang G. A single point mutation causes one-way alteration of pheromone receptor function in two Heliothis species. iScience 2021; 24:102981. [PMID: 34485863 PMCID: PMC8403742 DOI: 10.1016/j.isci.2021.102981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/12/2021] [Accepted: 08/11/2021] [Indexed: 11/04/2022] Open
Abstract
The sex pheromone processing system of moths has been a major focus of research on olfaction and speciation, as it is highly specific and closely related to reproductive isolation. The two noctuid moths Heliothis virescens and Heliothis subflexa have been used as a model for deciphering the mechanisms underlying differentiation in pheromone communication, but no information exist regarding the functions of the pheromone receptors (PRs) of H. subflexa. Here, we functionally characterized all candidate PRs of H. subflexa, and found that only the response profile of OR6 differed between the two species. Through domain swapping and site-directed mutation followed by functional characterization, we identified a critical amino acid in OR6 caused a one-way alteration in specificity. This result suggests HsubOR6 evolved from an ancestral OR6 gene with a HvirOR6-like function and implies that the evolutionary direction of the receptor specificity was from the H. virescens-like pattern to H. subflexa-like pattern.
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Affiliation(s)
- Song Cao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Yang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Bing Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Guirong Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
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5
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Kiper AK, Bedoya M, Stalke S, Marzian S, Ramírez D, de la Cruz A, Peraza DA, Vera-Zambrano A, Márquez Montesinos JCE, Arévalo Ramos BA, Rinné S, Gonzalez T, Valenzuela C, Gonzalez W, Decher N. Identification of a critical binding site for local anaesthetics in the side pockets of K v 1 channels. Br J Pharmacol 2021; 178:3034-3048. [PMID: 33817777 DOI: 10.1111/bph.15480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 02/24/2021] [Accepted: 03/10/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE Local anaesthetics block sodium and a variety of potassium channels. Although previous studies identified a residue in the pore signature sequence together with three residues in the S6 segment as a putative binding site, the precise molecular basis of inhibition of Kv channels by local anaesthetics remained unknown. Crystal structures of Kv channels predict that some of these residues point away from the central cavity and face into a drug binding site called side pockets. Thus, the question arises whether the binding site of local anaesthetics is exclusively located in the central cavity or also involves the side pockets. EXPERIMENTAL APPROACH A systematic functional alanine mutagenesis approach, scanning 58 mutants, together with in silico docking experiments and molecular dynamics simulations was utilized to elucidate the binding site of bupivacaine and ropivacaine. KEY RESULTS Inhibition of Kv 1.5 channels by local anaesthetics requires binding to the central cavity and the side pockets, and the latter requires interactions with residues of the S5 and the back of the S6 segments. Mutations in the side pockets remove stereoselectivity of inhibition of Kv 1.5 channels by bupivacaine. Although binding to the side pockets is conserved for different local anaesthetics, the binding mode in the central cavity and the side pockets shows considerable variations. CONCLUSION AND IMPLICATIONS Local anaesthetics bind to the central cavity and the side pockets, which provide a crucial key to the molecular understanding of their Kv channel affinity and stereoselectivity, as well as their spectrum of side effects.
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Affiliation(s)
- Aytug K Kiper
- Institute for Physiology and Pathophysiology, Philipps-University Marburg, Marburg, Germany
| | - Mauricio Bedoya
- Centro de Bioinformática y Simulación Molecular, Universidad de Talca, Talca, Chile.,Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Talca, Talca, Chile
| | - Sarah Stalke
- Institute for Physiology and Pathophysiology, Philipps-University Marburg, Marburg, Germany
| | - Stefanie Marzian
- Institute for Physiology and Pathophysiology, Philipps-University Marburg, Marburg, Germany
| | - David Ramírez
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Alicia de la Cruz
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad Autónoma de Madrid (UAM), Madrid, Spain.,Spanish Network for Biomedical Research in Cardiovascular Research (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Diego A Peraza
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad Autónoma de Madrid (UAM), Madrid, Spain.,Spanish Network for Biomedical Research in Cardiovascular Research (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Alba Vera-Zambrano
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad Autónoma de Madrid (UAM), Madrid, Spain.,Spanish Network for Biomedical Research in Cardiovascular Research (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain.,Biochemistry Department, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | | | | | - Susanne Rinné
- Institute for Physiology and Pathophysiology, Philipps-University Marburg, Marburg, Germany
| | - Teresa Gonzalez
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad Autónoma de Madrid (UAM), Madrid, Spain.,Spanish Network for Biomedical Research in Cardiovascular Research (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain.,Biochemistry Department, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - Carmen Valenzuela
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad Autónoma de Madrid (UAM), Madrid, Spain.,Spanish Network for Biomedical Research in Cardiovascular Research (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Wendy Gonzalez
- Centro de Bioinformática y Simulación Molecular, Universidad de Talca, Talca, Chile.,Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Talca, Talca, Chile
| | - Niels Decher
- Institute for Physiology and Pathophysiology, Philipps-University Marburg, Marburg, Germany
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Wang D, Tao J, Lu P, Luo Y, Hu P. The whole body transcriptome of Coleophora obducta reveals important olfactory proteins. PeerJ 2020; 8:e8902. [PMID: 32309046 PMCID: PMC7153557 DOI: 10.7717/peerj.8902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 03/12/2020] [Indexed: 11/21/2022] Open
Abstract
Background The tiny casebearer moth Coleophora obducta, an important defoliator of Larix spp., is a major threat to ecological security in north China. Studies have shown that C. obducta is strongly specific to host plants; it is unable complete its life cycle without Larix spp. The sex pheromones of C. obducta Z5-10:OH have been elucidated; and eight types of antennae sensilla, have been detected, indicating that an exploration of its olfactory proteins is necessary, due to the general lack of information on this topic. Methods We investigated the whole body transcriptome of C. obducta, performed a phylogenetic analysis of its olfactory proteins and produced expression profiles of three pheromone-binding proteins (CobdPBPs) by qRT–PCR. Results We identified 16 odorant binding proteins, 14 chemosensory proteins, three sensory neuron membrane proteins, six odorant degrading enzymes, five antennal esterases, 13 odorant receptors, seven ionotropic receptors and 10 gustatory receptors, including three PBPs and one odorant co-receptor. Additionally, three putative pheromone receptors, two bitter gustatory receptors and five functional ionotropic receptors were found by phylogenetic analysis. The expression profiles of three PBPs in males and females showed that all of them exhibited male-specific expression and two were expressed at significantly higher levels in males. These data provide a molecular foundation from which to explore the olfactory recognition process and may be useful in the development of a new integrated pest management strategy targeting olfactory recognition of C. obducta.
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Affiliation(s)
- Dongbai Wang
- Forestry College, Guangxi University, Nanning, Guangxi, China.,Xingan Vocational and Technical College, Xinganmeng, Inner Mongolia, China
| | - Jing Tao
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Pengfei Lu
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Youqing Luo
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Ping Hu
- Forestry College, Guangxi University, Nanning, Guangxi, China.,Xingan Vocational and Technical College, Xinganmeng, Inner Mongolia, China
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7
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Horovitz A, Fleisher RC, Mondal T. Double-mutant cycles: new directions and applications. Curr Opin Struct Biol 2019; 58:10-17. [PMID: 31029859 DOI: 10.1016/j.sbi.2019.03.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 03/20/2019] [Indexed: 11/17/2022]
Abstract
Double-mutant cycle (DMC) analysis is a powerful approach for detecting and quantifying the energetics of both direct and long-range interactions in proteins and other chemical systems. It can also be used to unravel higher-order interactions (e.g. three-body effects) that lead to cooperativity in protein folding and function. In this review, we describe new applications of DMC analysis based on advances in native mass spectrometry and high-throughput methods such as next generation sequencing and protein complementation assays. These developments have facilitated carrying out high-throughput DMC analysis, which can be used to characterize increasingly higher-order interactions and very large interaction networks in proteins. Such studies have provided insights into the extent of cooperativity (epistasis) in protein structures. High-throughput DMC studies have also been used to validate correlated mutation analysis and can provide restraints for protein docking.
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Affiliation(s)
- Amnon Horovitz
- Department of Structural Biology, Weizmann Institute of Science, Rehovot 7610001, Israel.
| | - Rachel C Fleisher
- Department of Structural Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Tridib Mondal
- Department of Structural Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
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8
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Li J, Liu X, Man Y, Chen Q, Pei D, Wu W. Cell-free expression, purification and characterization of Drosophila melanogaster odorant receptor OR42a and its co-receptor. Protein Expr Purif 2019; 159:27-33. [PMID: 30872132 DOI: 10.1016/j.pep.2019.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 01/06/2019] [Accepted: 03/01/2019] [Indexed: 10/27/2022]
Abstract
Olfactory receptors (OR), a group of classic membrane proteins, plays a vital role in insect reproduction and acclimatization. Deciphering the molecular mechanism of insect olfaction could enhance pest control and environmental protection. Studies on ORs have faced a major bottleneck due to the notoriously strong hydrophobicity of ORs, which results in difficult expression in heterologous cell systems. Here, we demonstrated that insect ORs could be functionally produced using the E. coli cell-free protein synthesis system (CFPS), in which the highest yield of total ORs is 350 μg per 1 ml reaction. We tested the effects of detergent types and concentrations on soluble expression of ORs. The ORs showed a classic α-helical infrared spectrum. Quartz crystal microbalance (QCM) was used to demonstrate that ORs fold correctly and respond to their ligands. This is the first report that insect OR42a could be functionally produced in vitro. This approach may facilitate the development of biomimetic olfactory biosensors and may also be utilized for drug positioning and development, environmental protection and agriculture.
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Affiliation(s)
- Jianyong Li
- Department of Biology and Chemistry, National University of Defense Technology, Changsha, 410000, Hunan, China
| | - Xingping Liu
- Department of Biology and Chemistry, National University of Defense Technology, Changsha, 410000, Hunan, China
| | - Yahui Man
- Department of Biology and Chemistry, National University of Defense Technology, Changsha, 410000, Hunan, China
| | - Qian Chen
- Department of Biology and Chemistry, National University of Defense Technology, Changsha, 410000, Hunan, China
| | - Di Pei
- Department of Biology and Chemistry, National University of Defense Technology, Changsha, 410000, Hunan, China
| | - Wenjian Wu
- Department of Biology and Chemistry, National University of Defense Technology, Changsha, 410000, Hunan, China.
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Venthur H, Zhou JJ. Odorant Receptors and Odorant-Binding Proteins as Insect Pest Control Targets: A Comparative Analysis. Front Physiol 2018; 9:1163. [PMID: 30197600 PMCID: PMC6117247 DOI: 10.3389/fphys.2018.01163] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 08/03/2018] [Indexed: 01/09/2023] Open
Abstract
Recently, two alternative targets in insect periphery nerve system have been explored for environmentally-friendly approaches in insect pest management, namely odorant-binding proteins (OBPs) and odorant receptors (ORs). Located in insect antennae, OBPs are thought to be involved in the transport of odorants to ORs for the specific signal transduction of behaviorally active odorants. There is rich information on OBP binding affinity and molecular docking to bioactive compounds as well as ample 3D crystal structures due to feasible production of recombinant proteins. Although these provide excellent opportunities for them to be considered as pest control targets and a tool to design pest control agents, the debates on their binding specificity represent an obstacle. On the other hand, ORs have recently been functionally characterized with increasing evidence for their specificity, sensitivity and functional roles in pest behaviors. However, a major barrier to use ORs for semiochemical discovery is the lack of 3D crystal structures. Thus, OBPs and ORs have not been analyzed comparatively together so far for their feasibility as pest control targets. Here, we summarize the state of OBPs and ORs research in terms of its application in insect pest management. We discuss the suitability of both proteins as pest control targets and their selection toward the discovery of new potent semiochemicals. We argue that both proteins represent promising targets for pest control and can be used to identify new super-ligands likely present in nature and with reduced risk of resistance development than insect pesticides currently used in agriculture. We discuss that with the massive identification of OBPs through RNA-seq and improved binding affinity measurements, these proteins could be reconsidered as suitable targets for semiochemical discovery.
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Affiliation(s)
- Herbert Venthur
- Laboratorio de Química Ecológica, Departamento de Ciencias Químicas y Recursos Naturales, Universidad de La Frontera, Temuco, Chile.,Center of Excellence in Biotechnology Research Applied to the Environment (CIBAMA), Universidad de La Frontera, Temuco, Chile
| | - Jing-Jiang Zhou
- Department of Biological Chemistry and Crop Protection, Rothamsted Research, Harpenden, United Kingdom.,Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun, China
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Hu P, Gao C, Zong S, Luo Y, Tao J. Pheromone Binding Protein EhipPBP1 Is Highly Enriched in the Male Antennae of the Seabuckthorn Carpenterworm and Is Binding to Sex Pheromone Components. Front Physiol 2018; 9:447. [PMID: 29755369 PMCID: PMC5934486 DOI: 10.3389/fphys.2018.00447] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 04/10/2018] [Indexed: 12/02/2022] Open
Abstract
The seabuckthorn carpenterworm moth Eogystia hippophaecolus is a major threat to seabuckthorn plantations, causing considerable ecological and economic losses in China. Transcriptomic analysis of E. hippophaecolus previously identified 137 olfactory proteins, including three pheromone-binding proteins (PBPs). We investigated the function of E. hippophaecolus PBP1 by studying its mRNA and protein expression profiles and its binding ability with different compounds. The highest levels of expression were in the antennae, particularly in males, with much lower levels of expression in the legs and external genitals. Recombinant PBP1 showed strong binding to sex-pheromone components, suggesting that antennal EhipPBP1 is involved in binding sex-pheromone components during pheromone communication.
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Affiliation(s)
- Ping Hu
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China.,Xing An Vocational and Technical College, Xinganmeng, China
| | - Chenglong Gao
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Shixiang Zong
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Youqing Luo
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Jing Tao
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
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