Selected-GenAtlas references SOURCE GeneCards NCBI Gene Swiss-Prot Orphanet Ensembl
HGNC UniGene Nucleotide OMIM UCSC
Home Page
FLASH GENE
Symbol HBB contributors: mct - updated : 23-08-2017
HGNC name hemoglobin, beta
HGNC id 4827
PROTEIN
PHYSICAL PROPERTIES
STRUCTURE
motifs/domains
  • eight helical segments A to H
  • non helical N and C termini and non helical linkers
    • mono polymer heteromer , dimer , tetramer , complex
    HOMOLOGY
    interspecies homolog to rattus Hbb
    Homologene
    FAMILY
  • globin family
    • CATEGORY transport carrier
    SUBCELLULAR LOCALIZATION extracellular
        intracellular
    intracellular,cytoplasm,cytosolic
    basic FUNCTION
  • transporting oxygen and carbon dioxide between the lung and tissues
    • CELLULAR PROCESS
    PHYSIOLOGICAL PROCESS
    text oxygen transport
    PATHWAY
    metabolism
    signaling
    GATA1/ZFPM1/NuRD Pathway implicated in expression of HBB
    a component
  • heterodimer alpha beta forming a heterotetramer alpha2 beta2
    • INTERACTION
    DNA
    RNA
    small molecule other,
  • heme ferroporphyrin binding O2 and anchored to distal and proximal histidine of the HbA chain, embedded in the pocket between helices E and F
    • protein
  • binding to alpha chain
  • 2-3 diphosphoglycerate binding specifically to the beta chains of hemoglobin in the T state (desoxy)
  • HIRA is not only critical for HBB expression but is also required for activation of the erythropoietic regulators KLF1 and GATA binding protein 1 (GATA1)
  • amount of KLF1 expression strongly positively correlates with HBB mRNA and weakly positively correlates with BCL11A mRNA
    • cell & other
    REGULATION
    repressed by SP1 during erythroid terminal differentiation
    Other autocatalytic RNA cleavage promoting transcription termination
    regulated by IKAROS (involved in the regulation of human globin gene switching) (Keys 2008)
    ASSOCIATED DISORDERS
    corresponding disease(s) BTHAL , HBOA , SICA
    related resource A Syllabus of Human Hemoglobin Variants & A Syllabus of Thalassaemia Mutations
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    constitutional     --low  
    age-down regulated in the frontal cortex
    Susceptibility
    Variant & Polymorphism
    Candidate gene
    Marker
    Therapy target
    ANIMAL & CELL MODELS