Predicted to enable several functions, including heme binding activity; oxygen binding activity; and oxygen carrier activity. Predicted to contribute to haptoglobin binding activity and peroxidase activity. Involved in response to estradiol. Predicted to be located in extracellular space. Predicted to be part of cytosolic small ribosomal subunit; haptoglobin-hemoglobin complex; and hemoglobin complex. Human ortholog(s) of this gene implicated in Heinz body anemia; alpha thalassemia; familial erythrocytosis 7; and hemoglobin H disease. Orthologous to several human genes including HBA2 (hemoglobin subunit alpha 2). [provided by Alliance of Genome Resources, Apr 2022]