HBA2

The human alpha globin gene cluster located on chromosome 16 spans about 30 kb and includes seven loci: 5'- zeta - pseudozeta - mu - pseudoalpha-1 - alpha-2 - alpha-1 - theta - 3'. The alpha-2 (HBA2) and alpha-1 (HBA1) coding sequences are identical. These genes differ slightly over the 5' untranslated regions and the introns, but they differ significantly over the 3' untranslated regions. Two alpha chains plus two beta chains constitute HbA, which in normal adult life comprises about 97% of the total hemoglobin; alpha chains combine with delta chains to constitute HbA-2, which with HbF (fetal hemoglobin) makes up the remaining 3% of adult hemoglobin. Alpha thalassemias result from deletions of each of the alpha genes as well as deletions of both HBA2 and HBA1; some nondeletion alpha thalassemias have also been reported. [provided by RefSeq, Jul 2008]

Description

Hemoglobin subunit alpha 2

Tissue specificity

Tissue enriched (bone marrow)

Predicted location

Intracellular

Protein family

Disease related genes
FDA approved drug targets
Human disease related genes
Mapped to neXtProt
Mapped to UniProt SWISS-PROT
Plasma proteins
Predicted intracellular proteins
Transporters

Chromosome

16 (172876 - 173710)

Ensembl ID

ENSG00000188536  (ver. 103.38)

Orthologs

-

UniProt

P69905

neXtProt

NX_P69905

Human splice variants

Protein structure