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Adhesion GPCRs as a paradigm for understanding polycystin-1 G protein regulation.
Cellular Signalling ( IF 4.8 ) Pub Date : 2020-04-16 , DOI: 10.1016/j.cellsig.2020.109637
Robin L Maser 1 , James P Calvet 2
Affiliation  

Polycystin-1, whose mutation is the most frequent cause of autosomal dominant polycystic kidney disease, is an extremely large and multi-faceted membrane protein whose primary or proximal cyst-preventing function remains undetermined. Accumulating evidence supports the idea that modulation of cellular signaling by heterotrimeric G proteins is a critical function of polycystin-1. The presence of a cis-autocatalyzed, G protein-coupled receptor (GPCR) proteolytic cleavage site, or GPS, in its extracellular N-terminal domain immediately preceding the first transmembrane domain is one of the notable conserved features of the polycystin-1-like protein family, and also of the family of cell adhesion GPCRs. Adhesion GPCRs are one of five families within the GPCR superfamily and are distinguished by a large N-terminal extracellular region consisting of multiple adhesion modules with a GPS-containing GAIN domain and bimodal functions in cell adhesion and signal transduction. Recent advances from studies of adhesion GPCRs provide a new paradigm for unraveling the mechanisms by which polycystin-1-associated G protein signaling contributes to the pathogenesis of polycystic kidney disease. This review highlights the structural and functional features shared by polycystin-1 and the adhesion GPCRs and discusses the implications of such similarities for our further understanding of the functions of this complicated protein.

中文翻译:

粘附 GPCR 作为理解 polycystin-1 G 蛋白调控的范例。

Polycystin-1,其突变是常染色体显性多囊肾病的最常见原因,是一种非常大的多面膜蛋白,其主要或近端囊肿预防功能仍未确定。越来越多的证据支持这样一种观点,即异源三聚体 G 蛋白对细胞信号的调节是 polycystin-1 的关键功能。顺式自动催化的 G 蛋白偶联受体 (GPCR) 蛋白水解切割位点或 GPS,在其第一个跨膜结构域之前的胞外 N 端结构域中是 polycystin-1 样的显着保守特征之一。蛋白质家族,以及细胞粘附 GPCR 家族。粘附 GPCR 是 GPCR 超家族中的五个家族之一,其特征在于一个大的 N 端细胞外区域,该区域由多个粘附模块组成,具有包含 GPS 的 GAIN 域和细胞粘附和信号转导中的双峰功能。粘附 GPCR 研究的最新进展为揭示多囊蛋白 1 相关 G 蛋白信号传导对多囊肾病发病机制的作用提供了新的范例。本综述强调了 polycystin-1 和粘附 GPCR 共有的结构和功能特征,并讨论了这种相似性对我们进一步了解这种复杂蛋白质的功能的意义。粘附 GPCR 研究的最新进展为揭示多囊蛋白 1 相关 G 蛋白信号传导对多囊肾病发病机制的作用提供了新的范例。本综述强调了 polycystin-1 和粘附 GPCR 共有的结构和功能特征,并讨论了这种相似性对我们进一步了解这种复杂蛋白质的功能的意义。粘附 GPCR 研究的最新进展为揭示多囊蛋白 1 相关 G 蛋白信号传导对多囊肾病发病机制的作用提供了新的范例。本综述强调了 polycystin-1 和粘附 GPCR 共有的结构和功能特征,并讨论了这种相似性对我们进一步了解这种复杂蛋白质的功能的意义。
更新日期:2020-04-16
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