Predicted to enable calcium ion binding activity; identical protein binding activity; and phospholipid binding activity. Predicted to be involved in endoplasmic reticulum-plasma membrane tethering. Predicted to act upstream of or within endocytosis and lipid transport. Predicted to be located in endoplasmic reticulum-plasma membrane contact site. Predicted to be integral component of plasma membrane. Predicted to be extrinsic component of cytoplasmic side of plasma membrane and intrinsic component of endoplasmic reticulum membrane. Is expressed in several structures, including aorta; genitourinary system; mammary gland; nervous system; and retina. Orthologous to human ESYT2 (extended synaptotagmin 2). [provided by Alliance of Genome Resources, Apr 2022]