{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T09:13:00Z","timestamp":1791191580537,"version":"4.1.0"},"reference-count":66,"publisher":"American Society for Cell Biology (ASCB)","issue":"23","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MBoC"],"published-print":{"date-parts":[[2011,12]]},"abstract":"<jats:p> Sorting of glycosylphosphatidyl-inositol\u2013anchored proteins (GPI-APs) in polarized epithelial cells is not fully understood. Oligomerization in the Golgi complex has emerged as the crucial event driving apical segregation of GPI-APs in two different kind of epithelial cells, Madin\u2013Darby canine kidney (MDCK) and Fisher rat thyroid (FRT) cells, but whether the mechanism is conserved is unknown. In MDCK cells cholesterol promotes GPI-AP oligomerization, as well as apical sorting of GPI-APs. Here we show that FRT cells lack this cholesterol-driven oligomerization as apical sorting mechanism. In these cells both apical and basolateral GPI-APs display restricted diffusion in the Golgi likely due to a cholesterol-enriched membrane environment. It is striking that N-glycosylation is the critical event for oligomerization and apical sorting of GPI-APs in FRT cells but not in MDCK cells. Our data indicate that at least two mechanisms exist to determine oligomerization in the Golgi leading to apical sorting of GPI-APs. One depends on cholesterol, and the other depends on N-glycosylation and is insensitive to cholesterol addition or depletion. <\/jats:p>","DOI":"10.1091\/mbc.e11-04-0320","type":"journal-article","created":{"date-parts":[[2011,10,13]],"date-time":"2011-10-13T05:37:03Z","timestamp":1318484223000},"page":"4621-4634","source":"Crossref","is-referenced-by-count":30,"title":["N-Glycosylation instead of cholesterol mediates oligomerization and apical sorting of GPI-APs in FRT cells"],"prefix":"10.1091","volume":"22","author":[{"given":"Naga Salaija","family":"Imjeti","sequence":"first","affiliation":[{"name":"Institut Pasteur, Unit\u00e9 de Traffic Membranaire et Pathogen\u00e8se, 75015 Paris, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"St\u00e9phanie","family":"Lebreton","sequence":"additional","affiliation":[{"name":"Institut Pasteur, Unit\u00e9 de Traffic Membranaire et Pathogen\u00e8se, 75015 Paris, 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