Predicted to enable flavin-dependent sulfhydryl oxidase activity and protein disulfide isomerase activity. Predicted to be involved in protein folding. Predicted to be located in membrane. Predicted to be active in Golgi membrane and extracellular space. Is expressed in several structures, including diencephalon; liver; pronephric duct; solid lens vesicle; and yolk syncytial layer. Orthologous to human QSOX1 (quiescin sulfhydryl oxidase 1).