C8orf2,endoplasmic reticulum lipid raft-associated protein 2,epididymis secretory sperm binding protein,erlin-2,NET32,spastic paraplegia 18 (autosomal dominant),SPFH domain family, member 2,SPFH2,SPG18,stomatin-prohibitin-flotillin-HflC/K domain-containing protein 2.
Component of the ERLIN1/ERLIN2 complex which mediates the endoplasmic reticulum-associated degradation (ERAD) of inositol 1,4,5-trisphosphate receptors (IP3Rs) such as ITPR1 (PubMed:19240031, PubMed:17502376). Promotes sterol-accelerated ERAD of HMGCR probably implicating an AMFR/gp78-containing ubiquitin ligase complex (PubMed:21343306). Involved in regulation of cellular cholesterol homeostasis by regulation the SREBP signaling pathway. May promote ER retention of the SCAP-SREBF complex (PubMed:24217618).