作者: Hyunho Kim , Hangxue Xu , Qin Yao , Weizhe Li , Qiong Huang
DOI: 10.1038/NCOMMS6482
关键词:
摘要: Primary cilia contain specific receptors and channel proteins that sense the extracellular milieu. Defective ciliary function causes ciliopathies such as autosomal dominant polycystic kidney disease (ADPKD). However, little is known about how large transmembrane traffic to cilia. Polycystin-1 (PC1) -2 (PC2), two ADPKD gene products, are co-localize where they act control proper tubular diameter. Here we describe PC1 PC2 must interact form a complex reach trans-Golgi network (TGN) for subsequent targeting. also be proteolytically cleaved at GPS site this occur. Using yeast two-hybrid screening coupled with candidate approach, identify Rabep1/GGA1/Arl3-dependent targeting mechanism, whereby Rabep1 couples polycystin GGA1/Arl3-based trafficking module TGN. This study provides novel insights into mechanism of membrane proteins.