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Heart of glass anchors Rasip1 at endothelial cell-cell junctions to support vascular integrity.

Elife. 2016; 
de KreukBart-Jan,GingrasAlexandre R,KnightJames Dr,LiuJian J,GingrasAnne-Claude,GinsbergMa
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Catalog Antibody HEK293T or U2OS cells, transfected and infected as indicated, were collected in cold lysis buffer (50 mM Tris-HCl, pH 7.4, 100 mM NaCl, 10 mM MgCl2, 1%NP40, and 10% glycerol) plus protease and phosphatase inhibitor cocktails (Roche) and subsequently, clarified lysate was incubated with anti-FLAG G1 Affinity Resin (Genscript, Piscataway, NJ; L00432-1) and incubated at 4°C for 3 hours while rotating. Get A Quote

摘要

Heart of Glass (HEG1), a transmembrane receptor, and Rasip1, an endothelial-specific Rap1-binding protein, are both essential for cardiovascular development. Here we performed a proteomic screen for novel HEG1 interactors and report that HEG1 binds directly to Rasip1. Rasip1 localizes to forming endothelial cell (EC) cell-cell junctions and silencing HEG1 prevents this localization. Conversely, mitochondria-targeted HEG1 relocalizes Rasip1 to mitochondria in cells. The Rasip1-binding site in HEG1 contains a 9 residue sequence, deletion of which abrogates HEG1's ability to recruit Rasip1. HEG1 binds to a central region of Rasip1 and deletion of this domain eliminates Rasip1's ability to bind HEG1, ... More

关键词

Heart of Glass,Rap1,Rasip1,Rho Kinase,cell biology,developmental biology,endothelial cells,human,stem c