Predicted to enable protein heterodimerization activity; protein homodimerization activity; and selenide, water dikinase activity. Predicted to be involved in selenocysteine biosynthetic process. Predicted to be located in nuclear membrane and plasma membrane. Predicted to be active in cytoplasm. Orthologous to human SEPHS1 (selenophosphate synthetase 1). [provided by Alliance of Genome Resources, Apr 2022]