This entry includes Erlin1/2 (also known as SPFH1/2) from animals and their homologues from plants. Mammalian Erlin1 and Erlin2 form a complex that mediates the endoplasmic reticulum-associated degradation (ERAD) of inositol 1,4,5-trisphosphate receptors (IP3Rs) such as ITPR1 [, , ]. The Erlin1/2 complex may recruit RNF170 (an E3 ubiquitin-protein ligase) to activated IP(3) receptors where it mediates IP(3) receptor ubiquitination [].Interestingly, C. elegans erlin homologue, ERL-1, does not play an essential role in the endoplasmic reticulum-associated degradation (ERAD) of inositol 1,4,5-triphosphate receptors (IP3Rs) [].
