Predicted to enable calcium ion binding activity and phospholipid binding activity. Predicted to be involved in endoplasmic reticulum-plasma membrane tethering 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. Orthologous to human ESYT3 (extended synaptotagmin 3). [provided by Alliance of Genome Resources, Apr 2022]