Predicted to enable transmembrane transporter binding activity. Predicted to be involved in cation transmembrane transport. Predicted to act upstream of or within endoplasmic reticulum calcium ion homeostasis and negative regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway. Predicted to be located in Golgi apparatus and endoplasmic reticulum. Orthologous to human GRINA (glutamate ionotropic receptor NMDA type subunit associated protein 1). [provided by Alliance of Genome Resources, Apr 2022]