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Molecular and in vitro biochemical assessment of chemosensory protein 10 from brown planthopper Nilaparvata lugens at acidic pH

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Journal of Integrative Agriculture 2022年第3期21卷 781-796页

作者： Muhammad Irfan WARIS Aneela YOUNAS Rana Muhammad Kaleem ULLAH Fatima RASOOL Muhammad Muzammal ADEEL WANG Man-qun College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070P.R.China National Center for Bioinformatics Quaid-i-Azam UniversityIslamaba 45320Pakistan College of Informatics Huazhong Agricultural UniversityWuhan 430070P.R.China

Chemosensory proteins(CSPs)are important molecular components of the insect olfactory system,which are involved in capturing,binding,and transporting hydrophobic odour molecules across the sensillum in sensillar lymph in regulating insect *** protein family(CSPs)is also involved in many other systems that are not linked to olfactory receptors in olfactory *** brown planthopper(BPH)is a monophagous pest of rice that causes damage by sucking phloem sap and transmitting a number of diseases caused by *** this study,fluorescence competitive binding assay and fluorescence quenching assay at acidic p H were performed as well as homology modelling to describe the binding affinity of Nlug *** competitive binding assay(FCBA)demonstrated that Nlug CSP10 bound strongly to nonadecane,farnesene,and 2-tridecanone at acidic p *** results of FCBA indicated that Nlug CSP10 bound different ligands at the physiological p H(5.0)of the bulk sensillum *** quenching assay demonstrated that Nlug CSP10 generated a stable complex with 2-tridecanone,while two ligands nonadecane and farnesene collided due to molecular *** interaction of selected ligands with the modelled structure of Nlug CSP10 was also analyzed,which found the key amino acids(Gln23,Gln24,Gln25,Asn27,Met33,Ser34,Ile35,Tyr36,Asn42,Met43,Val45,Asn46,Asn93,Arg96,Ala97,Lys99,and Ala100)in Nlug CSP10 that were involved in binding of volatile *** present study contributes to the binding profile of Nlug CSP10 that promotes the development of behaviorally active ligands based on BPH olfactory system.

关键词： insect olfaction chemosensory protein Nilaparvata lugens fluorescence competitive binding assay fluorescence quenching assay molecular docking

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