This gene encodes a protein with a putative role in the localization of trans-Golgi network (TGN) membrane proteins. Mouse and rat homologs have been identified and studies of the homologous rat protein indicate a role in directing TGN localization of furin by binding to the protease's phosphorylate
d cytosolic domain. In addition, the human protein plays a role in HIV-1 Nef-mediated downregulation of cell surface MHC-I molecules to the TGN, thereby enabling HIV-1 to escape immune surveillance. [provided by RefSeq, Jul 2008]
Predicted to enable transmembrane transporter binding activity. Involved in endoplasmic reticulum calcium ion homeostasis; mitochondrion-endoplasmic reticulum membrane tethering; and protein localization to plasma membrane. Acts upstream of or within protein localization to phagophore assembly site.
Located in endoplasmic reticulum and mitochondrion. Implicated in developmental and epileptic encephalopathy 66. [provided by Alliance of Genome Resources, Jul 2025]