协同的形状变化控制了甲基胺基基因组受体活性
Nathalie Lecat-Guillet1, Robert B Quast2, Hongkang Liu1,3
1Institut de Génomique Fonctionnelle, Univ. Montpellier, CNRS, INSERM, 141 rue de la Cardonille, 34094, Montpellier Cedex 05, France.
Science advances
|June 2, 2023
概括
阿洛斯特基调节剂通过控制甲基胺 (mGlu) 受体活性来微调神经递质作用. 这些配体稳定了mGlu2受体的完全活跃的二分体构成,这对大脑功能至关重要.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 甲基氨酸 (mGlu) 受体是神经传递的关键调节者,并与大脑疾病有关.
- 阿洛斯特基调节器通过与不同部位相互作用,可以精确控制受体活性.
- 了解带诱导的结构变化对于药物开发至关重要.
研究的目的:
- 为了研究全长mGlu2受体在orthosteric和allosteric连接体结合时的单分子构造动力学.
- 阐明orthosteric和allosteric连接体在调节受体活性中的协同作用.
主要方法:
- 开发Förster共振能量转移 (FRET) 传感器,使用遗传密码扩展和点击化学来监测活细胞.
- 应用单分子FRET来分析mGlu2受体的结构变化.
主要成果:
- 整形激素激素的结合部分稳定了谷氨酸结合域的闭合状态,但并没有完全将二分体重定向到活性状态.
- 与跨膜域结合的体调节器对于稳定完全重定向的活性二元体构造至关重要.
- 多域二维GPCR中的协同构造变化对其功能至关重要.
结论:
- 基调制剂在实现mGlu2受体的完全活性构造方面发挥着至关重要的作用.
- 该研究提供了关于多域蛋白质构造动态如何被连接体控制和调节的见解.
- 这些发现突显了全调节剂对与mGlu受体相关的大脑疾病的治疗潜力.
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