Predicted to enable glutathione peroxidase activity. Predicted to be involved in cellular oxidant detoxification and response to oxidative stress. Predicted to act upstream of or within cellular response to oxidative stress. Predicted to be located in extracellular space and sperm plasma membrane. Orthologous to human GPX5 (glutathione peroxidase 5). [provided by Alliance of Genome Resources, Apr 2022]