Enables heme binding activity and hemoglobin alpha binding activity. Predicted to be involved in hydrogen peroxide catabolic process. Predicted to act upstream of or within negative regulation of transcription by RNA polymerase II. Part of hemoglobin complex. Human ortholog(s) of this gene implicated in delta beta-thalassemia and sickle cell anemia. Orthologous to several human genes including HBG1 (hemoglobin subunit gamma 1). [provided by Alliance of Genome Resources, Apr 2022]