Molecular tethering protein that connects endoplasmic reticulum and mitochondria membranes . PDZD8-dependent endoplasmic reticulum-mitochondria membrane tethering is essential for endoplasmic reticulum-mitochondria Ca(2+) transfer . In neurons, involved in the regulation of dendritic Ca(2+) dynamics by regulating mitochondrial Ca(2+) uptake in neurons . Plays an indirect role in the regulation of cell morphology and cytoskeletal organization . May inhibit herpes simplex virus 1 infection at an early stage .
Subcellular locations: Endoplasmic reticulum membrane
Localizes at mitochondria-endoplasmic reticulum contact sites.