Predicted to enable several functions, including heme binding activity; hemoglobin binding activity; and oxygen carrier activity. Predicted to contribute to haptoglobin binding activity and peroxidase activity. Predicted to be involved in glutathione metabolic process; hydrogen peroxide catabolic process; and oxygen transport. Predicted to be located in extracellular space. Predicted to be part of haptoglobin-hemoglobin complex and hemoglobin complex. Is expressed in embryo; heart; liver; spleen; and testis. Human ortholog(s) of this gene implicated in acute chest syndrome; hemolytic anemia (multiple); malaria; polycythemia (multiple); and sickle cell anemia. Orthologous to human HBB (hemoglobin subunit beta) and HBD (hemoglobin subunit delta). [provided by Alliance of Genome Resources, Apr 2022]