Hemoglobin Subunit Alpha

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Hemoglobin subunit alpha (142 aa, ~15 kDa) is encoded by both the human HBA1 and human HBA2 genes. This protein plays a role in the distribution of oxygen from the lungs to other organs and tissues.

**Synonyms:** - Alpha Globin - Alpha-Globin - HBA - Hemoglobin Alpha Chain