The alpha (HBA) and beta (HBB) loci determine the structure of the 2 types of polypeptide chains in adult hemoglobin, Hb A. The normal adult hemoglobin tetramer consists of two alpha chains and two beta chains. Mutant beta globin causes sickle cell anemia. Absence of beta chain causes beta-zero-thalassemia. Reduced amounts of detectable beta globin causes beta-plus-thalassemia. The order of the genes in the beta-globin cluster is 5'-epsilon -- gamma-G -- gamma-A -- delta -- beta--3'. [provided by RefSeq, Jul 2008]
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CFDE DD-Knowledge Graph
The CFDE Data Distillery Knowledge Graph contains entities and relationships across the CFDE. View HBB's neighborhood in the knowledge graph.
The Gene and Drug Landing Page Aggregator (GDLPA) finds links to primary and secondary source information from CFDE and other resources. Discover landing pages for HBB.