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From Wikipedia, the free encyclopedia

HBG1
Available structures
PDBHuman UniProt search: PDBe RCSB
Identifiers
AliasesHBG1, HBG-T2, HBGA, HBGR, HSGGL1, PRO2979, hemoglobin subunit gamma 1
External IDsOMIM: 142200 HomoloGene: 133561 GeneCards: HBG1
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000559

n/a

RefSeq (protein)

NP_000550

n/a

Location (UCSC)Chr 11: 5.25 – 5.25 Mbn/a
PubMed search[2]n/a
Wikidata
View/Edit Human

Hemoglobin subunit gamma-1 is a protein that in humans is encoded by the HBG1 gene.[3]

Function

The gamma globin genes (HBG1 and HBG2) are normally expressed in the fetal liver, spleen and bone marrow. Two gamma chains together with two alpha chains constitute fetal hemoglobin (HbF) which is normally replaced by adult hemoglobin (HbA) in the year following birth. In the non-pathological condition known as hereditary persistence of fetal hemoglobin (HPFH), gamma globin expression is continued into adulthood. Also, in cases of beta-thalassemia and related conditions, gamma chain production may be maintained, possibly as a mechanism to compensate for the mutated beta-globin. The two types of gamma chains differ at residue 136 where glycine is found in the G-gamma product (HBG2) and alanine is found in the A-gamma product (HBG1). The former is predominant at birth. The order of the genes in the beta-globin cluster is: 5' - epsilongamma-Ggamma-Adeltabeta - 3'.[4]

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000213934 - Ensembl, May 2017
  2. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. ^ Higgs DR, Vickers MA, Wilkie AO, Pretorius IM, Jarman AP, Weatherall DJ (May 1989). "A review of the molecular genetics of the human alpha-globin gene cluster". Blood. 73 (5): 1081–104. doi:10.1182/blood.V73.5.1081.1081. PMID 2649166.
  4. ^ "Entrez Gene: HBG1 hemoglobin, gamma A".

Further reading

External links

  • Overview of all the structural information available in the PDB for UniProt: P69891 (Hemoglobin subunit gamma-1) at the PDBe-KB.
This page was last edited on 31 August 2021, at 13:43
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