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EsigPBP3 是重要的激素结合蛋白,用于识别男性激素和关键的白石挥发物

Hengfei Fu¹, Guipeng Xiao², Zhende Yang¹

¹Guangxi Colleges and Universities Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation, Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, China.

International journal of molecular sciences

|March 13, 2024

概括

这项研究确定了EsigPBP3,这是雄性中的一种蛋白质,它强烈与白树挥发物和性激素结合. 这些结合点可以作为木 E. signifier. 害虫防治的目标.

科学领域:

昆虫学昆虫学是一门学科.
生物化学生物化学
分子生物学分子生物学

背景情况:

费洛蒙结合蛋白 (PBPs) 对于昆虫的化学接收至关重要,特别是识别费洛蒙.
了解这些相互作用是开发新型害虫控制策略的关键.
树木挖掘者 (Endoclita signifer) 对森林生态系统构成重大威胁.

研究的目的:

在*Endoclita signifer*中识别和表征一种特定的Pheromone-binding protein (PBP).
调查已识别的PBP与各种挥发性化合物 (包括费洛蒙) 的结合亲缘关系.
确定PBP上的关键结合点,以针对潜在的害虫防治目标.

主要方法:

从成年 *Endoclita signifer* 的天线进行转录分析.
光竞争性结合试验 (FCBA) 用于确定结合亲缘关系.
分子对接分析以预测结合相互作用并确定关键结合位点.

主要成果:

一种名为*EsigPBP3*的新型PBP被发现,在雄天线中表达高.
*EsigPBP3*对七种关键的白树挥发物和特定的性激素成分表现出高结合亲和力.
分子对接揭示了与 (3E,7E) -4,7,11-trimethyl-1,3,7,10-dodecatetraene的强烈结合,并确定了参与结合的关键氨基酸残留物 (PHE35,MET7,VAL10,PHE38,ILE52,PHE118).

结论:

*EsigPBP3*在E. signifer*中识别男性激素和关键挥发性化合物方面发挥着重要作用.
在 *EsigPBP3* 上确定了关键的结合点,为开发控制 *E. significant* 种群的策略提供了可行的目标.
这项研究为基于分子相互作用的新,有针对性的害虫管理方法提供了基础.

关键词:

光竞争结合测定试验分子对接的分子对接.费洛蒙是一种激素.费洛蒙结合蛋白质的蛋白质.

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