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Polycystins as components of large multiprotein complexes of polycystin interactors.
Cellular Signalling ( IF 4.4 ) Pub Date : 2020-04-17 , DOI: 10.1016/j.cellsig.2020.109640
Emily Hardy 1 , Leonidas Tsiokas 1
Affiliation  

Naturally occurring mutations in two separate genes, PKD1 and PKD2, are responsible for the vast majority of all cases of autosomal dominant polycystic kidney disease (ADPKD), one of the most common genetic diseases affecting 1 in 1000 Americans. The hallmark of ADPKD is the development of epithelial cysts in the kidney, liver, and pancreas. PKD1 encodes a large plasma membrane protein (PKD1, PC1, or Polycystin-1) with a long extracellular domain and has been speculated to function as an atypical G protein coupled receptor. PKD2 encodes an ion channel of the Transient Receptor Potential superfamily (TRPP2, PKD2, PC2, or Polycystin-2). Despite the identification of these genes more than 20 years ago, the molecular function of their encoded proteins and the mechanism(s) by which mutations in PKD1 and PKD2 cause ADPKD remain elusive. Genetic, biochemical, and functional evidence suggests they form a multiprotein complex present in multiple locations in the cell, including the plasma membrane, endoplasmic reticulum, and the primary cilium. Over the years, numerous interacting proteins have been identified using directed and unbiased approaches, and shown to modulate function, cellular localization, and protein stability and turnover of Polycystins. Delineation of the molecular composition of the Polycystin complex can have a significant impact on understanding their cellular function in health and disease states and on the identification of more specific and effective therapeutic targets.

中文翻译:

多囊蛋白作为多囊蛋白相互作用物的大型多蛋白复合物的组成部分。

两个独立基因 PKD1 和 PKD2 中自然发生的突变是绝大多数常染色体显性多囊肾病 (ADPKD) 病例的原因,ADPKD 是影响千分之一美国人的最常见遗传疾病之一。ADPKD 的标志是肾脏、肝脏和胰腺上皮囊肿的发展。PKD1 编码具有长胞外域的大质膜蛋白(PKD1、PC1 或 Polycystin-1),并被推测用作非典型 G 蛋白偶联受体。PKD2 编码瞬时受体电位超家族(TRPP2、PKD2、PC2 或 Polycystin-2)的离子通道。尽管这些基因在 20 多年前就被鉴定出来,但它们编码的蛋白质的分子功能以及 PKD1 和 PKD2 突变导致 ADPKD 的机制仍然难以捉摸。遗传,生化和功能证据表明它们形成多蛋白复合物,存在于细胞的多个位置,包括质膜、内质网和初级纤毛。多年来,已经使用定向和无偏见的方法鉴定了许多相互作用的蛋白质,并显示出调节多囊蛋白的功能、细胞定位以及蛋白质稳定性和周转。描述多囊蛋白复合物的分子组成对理解它们在健康和疾病状态下的细胞功能以及识别更具体和有效的治疗靶标具有重大影响。多年来,已经使用定向和无偏见的方法鉴定了许多相互作用的蛋白质,并显示出调节多囊蛋白的功能、细胞定位以及蛋白质稳定性和周转。描述多囊蛋白复合物的分子组成对理解它们在健康和疾病状态下的细胞功能以及识别更具体和有效的治疗靶标具有重大影响。多年来,已经使用定向和无偏见的方法鉴定了许多相互作用的蛋白质,并显示出调节多囊蛋白的功能、细胞定位以及蛋白质稳定性和周转。描述多囊蛋白复合物的分子组成对理解它们在健康和疾病状态下的细胞功能以及识别更具体和有效的治疗靶标具有重大影响。
更新日期:2020-04-17
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