Alpha-Globin Family Members
Members of the alpha-globin family. In humans, they are encoded in a gene cluster on chromosome 16. They include hemoglobin subunit zeta and hemoglobin subunit alpha. There are also pseudogenes of zeta (theta-zeta) and alpha (theta-alpha) in the cluster. Adult hemoglobin is comprised of 2 alpha-globin chains and 2 beta-globin chains.