UDP glucuronosyltransferase 2 family, polypeptide B4, also known as UGT2B4, is an enzyme that in humans is encoded by the UGT2B4 gene.[5][6][7]

UGT2B4
Identifiers
AliasesUGT2B4, HLUG25, UDPGT2B4, UDPGTH1, UDPGTh-1, UGT2B11, UDP glucuronosyltransferase family 2 member B4
External IDsOMIM: 600067; MGI: 1919023; HomoloGene: 130717; GeneCards: UGT2B4; OMA:UGT2B4 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001297615
NM_001297616
NM_021139

NM_152811

RefSeq (protein)

NP_001284544
NP_001284545
NP_066962

NP_690024

Location (UCSC)Chr 4: 69.48 – 69.53 MbChr 5: 87.06 – 87.07 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Function

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UGT2B4 is mainly involved in the glucuronidation of hyodeoxycholic acid, a bile acid, and catechol-estrogens, such as 17-epiestriol and 4-hydroxy-estrone.[8]

The expression of the UGT2B4 enzyme is upregulated by the farnesoid X receptor (FXR), a nuclear receptor which is activated by bile acids.[9] These same bile acids are substrates for the UGT2B4 enzyme. Hence upregulation of UGT2B4 by activated FXR provides a mechanism for the detection, conjugation and subsequent elimination of toxic bile acids.

References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000156096Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000035836Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ "Entrez Gene: UGT2B4 UDP glucuronosyltransferase 2 family, polypeptide B4".
  6. ^ Jackson MR, McCarthy LR, Harding D, Wilson S, Coughtrie MW, Burchell B (March 1987). "Cloning of a human liver microsomal UDP-glucuronosyltransferase cDNA". Biochem. J. 242 (2): 581–8. doi:10.1042/bj2420581. PMC 1147744. PMID 3109396.
  7. ^ Monaghan G, Clarke DJ, Povey S, See CG, Boxer M, Burchell B (September 1994). "Isolation of a human YAC contig encompassing a cluster of UGT2 genes and its regional localization to chromosome 4q13". Genomics. 23 (2): 496–9. doi:10.1006/geno.1994.1531. PMID 7835904.
  8. ^ Barre L, Fournel-Gigleux S, Finel M, Netter P, Magdalou J, Ouzzine M (March 2007). "Substrate specificity of the human UDP-glucuronosyltransferase UGT2B4 and UGT2B7. Identification of a critical aromatic amino acid residue at position 33". FEBS J. 274 (5): 1256–64. doi:10.1111/j.1742-4658.2007.05670.x. PMID 17263731. S2CID 27151203.
  9. ^ Barbier O, Torra IP, Sirvent A, Claudel T, Blanquart C, Duran-Sandoval D, Kuipers F, Kosykh V, Fruchart JC, Staels B (June 2003). "FXR induces the UGT2B4 enzyme in hepatocytes: a potential mechanism of negative feedback control of FXR activity". Gastroenterology. 124 (7): 1926–40. doi:10.1016/S0016-5085(03)00388-3. PMID 12806625.

Further reading

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