Component of the ERLIN1/ERLIN2 complex which mediates the endoplasmic reticulum-associated degradation (ERAD) of inositol 1,4,5-trisphosphate receptors (IP3Rs). Also involved in ITPR1 degradation by the ERAD pathway. Interacts with activated ITPR1, independently of the degree of ITPR1 polyubiquitination. Forms a heteromeric complex with ERLIN1. Ubiquitous. Belongs to the band 7/mec-2 family. 3 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Endoplasmic reticulum; Membrane protein, integral