Predicted to enable protein disulfide isomerase activity and thioredoxin-disulfide reductase activity. Predicted to be involved in cell differentiation; cellular oxidant detoxification; and spermatogenesis. Predicted to act upstream of or within cellular response to reactive oxygen species and flagellated sperm motility. Located in outer dense fiber. Orthologous to human TXNDC2 (thioredoxin domain containing 2). [provided by Alliance of Genome Resources, Apr 2022]