Journal article
Expression, purification and characterization of three odorant binding proteins from the diamondback moth, Plutella xylostella
Insect Molecular Biology, Vol.29(6), pp.531-544
2020
Abstract
Odorant binding proteins (OBPs) are critical components in insect olfactory systems where they bind, solubilize and transport odorant molecules to receptors. Here, we cloned three OBPs (PxylGOBP1, PxylGOBP2 and PxylOBP24) from the diamondback moth, Plutella xylostella, one of the most destructive pests of cruciferous crops. These three OBPs were expressed in Escherichia coli as recombinant proteins, purified and characterized by fluorescence binding assays with 39 ligands including sex pheromone and plant‐derived chemical compounds. PxylGOBP1 and PxylGOBP2 showed significantly different binding affinities to theses ligands, suggesting distinct binding preferences of these two general odorant binding proteins. PxylOBP24 showed no or extremely low binding activities to selected ligands, suggesting it may be involved in non‐olfactory functions. Circular dichroism spectral results demonstrated that PxylGOBP1 and PxylGOBP2 shared similar secondary structures while PxylOBP24 was significantly different. This study improves our knowledge of insect OBPs, which will assist in a better understanding of insect olfactory system and developing more environmentally friendly pest control strategies for P. xylostella.
Details
- Title
- Expression, purification and characterization of three odorant binding proteins from the diamondback moth, Plutella xylostella
- Authors/Creators
- L. Cai (Author/Creator) - Fujian Agriculture and Forestry UniversityX. Cheng (Author/Creator) - Fujian Agriculture and Forestry UniversityJ. Qin (Author/Creator) - Fujian Agriculture and Forestry UniversityW. Xu (Author/Creator) - Murdoch UniversityM. You (Author/Creator) - Fujian Agriculture and Forestry University
- Publication Details
- Insect Molecular Biology, Vol.29(6), pp.531-544
- Publisher
- Wiley
- Identifiers
- 991005542124007891
- Copyright
- © 2020 Royal Entomological Society
- Murdoch Affiliation
- School of Agricultural Sciences
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.220 Smell & Taste Science
- 3.220.701 Olfactory Systems
- Web Of Science research areas
- Biochemistry & Molecular Biology
- Entomology
- ESI research areas
- Plant & Animal Science