A unique hormonal recognition feature of the human glucagon-like peptide-2 receptor.

A unique hormonal recognition feature of the human glucagon-like peptide-2 receptor.
复制标题

人类胰高血糖素样肽 2 受体的独特激素识别特征。

DOI:
10.1038/s41422-020-00442-0
复制
发表时间:
2020-12
期刊:
影响因子:
44.1
通讯作者:
Wang MW
Wang MW
中科院分区:
生物学1区
文献类型:
--
作者:
Sun W;Chen LN;Zhou Q;Zhao LH;Yang D;Zhang H;Cong Z;Shen DD;Zhao F;Zhou F;Cai X;Chen Y;Zhou Y;Gadgaard S;van der Velden WJC;Zhao S;Jiang Y;Rosenkilde MM;Xu HE;Zhang Y;Wang MW

文献摘要

参考文献

被引文献

相似文献

胰高血糖素样肽(GLP-1和GLP-2)是两种胰高血糖素原衍生的肠激素,其通过两种相关受体(GLP-1 R和GLP-2 R)介导不同的生理功能,这两种受体分别是代谢紊乱和克罗恩病的重要药物靶点。尽管GLP-1 R结构测定取得了很大进展,但我们对这两种受体之间肽结合和信号转导差异的理解仍然很模糊。在这里,我们报告的电子显微镜结构的人GLP-2 R与GLP-2和Gs异源三聚体的复合物。为了适应GLP-2而不是GLP-1,GLP-2 R微调跨膜螺旋(TM)1、5、7和细胞外环1(ECL 1)的细胞外部分的构象。与GLP-1相反,GLP-2的N末端组氨酸以独特的方向渗透到受体核心中。GLP-2的中间区域与TM 1和TM 7的结合比与ECL 2的结合更广泛,GLP-2的C端与ECL 1紧密结合,ECL 1是9种B类G蛋白偶联受体(GPCR)中最突出的。功能研究表明,GLP-2的上述三个区段对于GLP-2的识别和受体活化是必需的,尤其是中间区域。这些结果为B类GPCR中配体特异性的分子基础提供了新的见解,并可能促进更特异性治疗剂的开发。
Glucagon-like peptides (GLP-1 and GLP-2) are two proglucagon-derived intestinal hormones that mediate distinct physiological functions through two related receptors (GLP-1R and GLP-2R) which are important drug targets for metabolic disorders and Crohn’s disease, respectively. Despite great progress in GLP-1R structure determination, our understanding on the differences of peptide binding and signal transduction between these two receptors remains elusive. Here we report the electron microscopy structure of the human GLP-2R in complex with GLP-2 and a Gs heterotrimer. To accommodate GLP-2 rather than GLP-1, GLP-2R fine-tunes the conformations of the extracellular parts of transmembrane helices (TMs) 1, 5, 7 and extracellular loop 1 (ECL1). In contrast to GLP-1, the N-terminal histidine of GLP-2 penetrates into the receptor core with a unique orientation. The middle region of GLP-2 engages with TM1 and TM7 more extensively than with ECL2, and the GLP-2 C-terminus closely attaches to ECL1, which is the most protruded among 9 class B G protein-coupled receptors (GPCRs). Functional studies revealed that the above three segments of GLP-2 are essential for GLP-2 recognition and receptor activation, especially the middle region. These results provide new insights into the molecular basis of ligand specificity in class B GPCRs and may facilitate the development of more specific therapeutics.
DOI: 10.1038/s41594-018-0151-4
发表时间: 2018-12-01
影响因子: 16.8
作者:
Ehrenmann, Janosch;Schoeppe, Jendrik;Plueckthun, Andreas
通讯作者: Plueckthun, Andreas
DOI: 10.1038/nbt0797-673
发表时间: 1997-07-01
影响因子: 46.9
作者:
Drucker, DJ;Shi, Q;Brubaker, PL
通讯作者: Brubaker, PL
DOI: 10.1016/j.cell.2019.04.044
发表时间: 2019-06-13
期刊: CELL
影响因子: 64.5
作者:
Inoue, Asuka;Raimondi, Francesco;Russell, Robert B.
通讯作者: Russell, Robert B.
DOI: 10.1107/s0907444904019158
发表时间: 2004-12-01
影响因子: 2.2
作者:
Emsley, P;Cowtan, K
通讯作者: Cowtan, K
DOI: 10.1038/nature22800
发表时间: 2017-06-08
期刊: NATURE
影响因子: 64.8
作者:
Jazayeri, Ali;Rappas, Mathieu;Marshall, Fiona H.
通讯作者: Marshall, Fiona H.