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Conformational Dynamics of Large 'Two-Headed Ligand Keys': Unlocking the Glucagon-Like Peptide-1 Receptor Signaling Pathway

机译:大“双头配体键”的构象动态:解锁胰高血糖素样肽-1受体信号传导路径

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The glucagon-like peptide-1 receptor (GLP-1R) potentiates glucose-stimulated insulin secretion and is a therapeutic target for treat ment of type 2 diabetes mellitus. Like other class-B G-protein-coupled receptors (GPCRs), GLP-1R possesses a large extracellular domain (145 residues) which binds to the carboxyl-terminal regions of peptide ligands. This allows the trans-membrane region to interact with the amino-terminal portion of the peptide ligands which induces a structural rearrangement in the receptor that potentiates intracellular G-pr otein signaling. Hydrogen/Deut erium Exchange (HDX) with Electron Transfer Dissociation (ETD) has been used to characterize GLP-1R signaling and develop a platform to screen novel therapeutics for type II diabetes.
机译:胰高血糖素样肽-1受体(GLP-1R)增强葡萄糖刺激的胰岛素分泌,是治疗2型糖尿病的治疗靶标。与其他类-B G蛋白偶联受体(GPCR)相同,GLP-1R具有大的细胞外结构域(145个残基),其与肽配体的羧基末端区域结合。这允许跨膜区域与肽配体的氨基 - 末端部分相互作用,该配体诱导受体中具有增强细胞内G-PR OTEIN信号传导的受体中的结构重排。具有电子转移解离(ETD)的氢气/乙酰·乙酸伊硫交换(HDX)已用于表征GLP-1R信号传导,并开发平台,以筛选II型糖尿病的新型治疗剂。

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