HBD | |||||||||||||||||
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Identifiers | |||||||||||||||||
Aliases | HBD | ||||||||||||||||
External IDs | HomoloGene: 128037 GeneCards: HBD | ||||||||||||||||
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Orthologs | |||||||||||||||||
Species | Human | Mouse | |||||||||||||||
Entrez |
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Ensembl |
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UniProt |
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RefSeq (mRNA) |
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RefSeq (protein) |
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Location (UCSC) | Chr 11: 5.23 – 5.24 Mb | n/a | |||||||||||||||
PubMed search | n/a | ||||||||||||||||
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Hemoglobin subunit delta is a protein that in humans is encoded by the HBD gene.
The delta (HBD) and beta (HBB) genes are normally expressed in the adult: two alpha chains plus two beta chains constitute HbA, which in normal adult life comprises about 97% of the total hemoglobin. Two alpha chains plus two delta chains constitute HbA2, which with HbF comprises the remaining 3% of adult hemoglobin. Five beta-like globin genes are found within a 45 kb cluster on chromosome 11 in the following order: 5' - epsilon – gamma-G – gamma-A – delta – beta - 3'.
Mutations in the delta-globin gene are associated with Delta-thalassemia.