isoprenoidlipiidi molekul, mis seob tsütoplasmavõrgustiku membraanis eellas-oligosahhariidi kui toimub valgu glükosüleerimine, Any of a group of long-chain mostly unsaturated organic compounds that are made up of isoprene units terminating in an α-saturated isoprenoid group. They bind pre-oligosaccharides during protein glycosylation.