Predicted to enable lipid binding activity and metal ion binding activity. Involved in mitochondrial calcium ion homeostasis and mitochondrion-endoplasmic reticulum membrane tethering. Located in endoplasmic reticulum membrane and mitochondria-associated endoplasmic reticulum membrane. Is expressed in several structures, including cardiovascular system; central nervous system; genitourinary system; gut; and retina nuclear layer. Orthologous to human PDZD8 (PDZ domain containing 8). [provided by Alliance of Genome Resources, Apr 2022]