The Full Wiki

More info on ABCB4

ABCB4: Wikis


Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! See more info or our list of citable articles.


From Wikipedia, the free encyclopedia

ATP-binding cassette, sub-family B (MDR/TAP), member 4
Symbols ABCB4; ABC21; MDR2/3; MDR3; PFIC-3; PGY3
External IDs OMIM171060 MGI97569 HomoloGene56421 GeneCards: ABCB4 Gene
RNA expression pattern
PBB GE ABCB4 207819 s at tn.png
PBB GE ABCB4 209994 s at tn.png
More reference expression data
Species Human Mouse
Entrez 5244 18670
Ensembl ENSG00000005471 ENSMUSG00000042476
UniProt P21439 P21440
RefSeq (mRNA) NM_000443 NM_008830
RefSeq (protein) NP_000434 NP_032856
Location (UCSC) Chr 7:
86.87 - 86.94 Mb
Chr 5:
8.9 - 8.97 Mb
PubMed search [1] [2]

Multidrug resistance protein 3 is a protein that in humans is encoded by the ABCB4 gene.[1][2][3] ABCB4 is associated with progressive familial intrahepatic cholestasis type 3.

The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance as well as antigen presentation. This gene encodes a full transporter and member of the p-glycoprotein family of membrane proteins with phosphatidylcholine as its substrate. The function of this protein has not yet been determined; however, it may involve transport of phospholipids from liver hepatocytes into bile. Alternative splicing of this gene results in several products of undetermined function.[3]


  1. ^ Van der Bliek AM, Baas F, Ten Houte de Lange T, Kooiman PM, Van der Velde-Koerts T, Borst P (Mar 1988). "The human mdr3 gene encodes a novel P-glycoprotein homologue and gives rise to alternatively spliced mRNAs in liver". EMBO J 6 (11): 3325-31. PMID 2892668.  
  2. ^ Rosmorduc O, Hermelin B, Poupon R (Apr 2001). "MDR3 gene defect in adults with symptomatic intrahepatic and gallbladder cholesterol cholelithiasis". Gastroenterology 120 (6): 1459-67. PMID 11313316.  
  3. ^ a b "Entrez Gene: ABCB4 ATP-binding cassette, sub-family B (MDR/TAP), member 4".  

Further reading

  • Rosmorduc O, Poupon R (2007). "Low phospholipid associated cholelithiasis: association with mutation in the MDR3/ABCB4 gene.". Orphanet journal of rare diseases 2: 29. doi:10.1186/1750-1172-2-29. PMID 17562004.  
  • Mbongo-Kama E, Harnois F, Mennecier D, et al. (2007). "MDR3 mutations associated with intrahepatic and gallbladder cholesterol cholelithiasis: an update.". Annals of hepatology : official journal of the Mexican Association of Hepatology 6 (3): 143–9. PMID 17786139.  
  • Lincke CR, Smit JJ, van der Velde-Koerts T, Borst P (1991). "Structure of the human MDR3 gene and physical mapping of the human MDR locus.". J. Biol. Chem. 266 (8): 5303–10. PMID 2002063.  
  • van der Bliek AM, Kooiman PM, Schneider C, Borst P (1989). "Sequence of mdr3 cDNA encoding a human P-glycoprotein.". Gene 71 (2): 401–11. doi:10.1016/0378-1119(88)90057-1. PMID 2906314.  
  • Callen DF, Baker E, Simmers RN, et al. (1987). "Localization of the human multiple drug resistance gene, MDR1, to 7q21.1.". Hum. Genet. 77 (2): 142–4. doi:10.1007/BF00272381. PMID 3477522.  
  • Smit JJ, Schinkel AH, Mol CA, et al. (1994). "Tissue distribution of the human MDR3 P-glycoprotein.". Lab. Invest. 71 (5): 638–49. PMID 7734012.  
  • Smit JJ, Mol CA, van Deemter L, et al. (1995). "Characterization of the promoter region of the human MDR3 P-glycoprotein gene.". Biochim. Biophys. Acta 1261 (1): 44–56. PMID 7893760.  
  • Whitington PF, Freese DK, Alonso EM, et al. (1994). "Clinical and biochemical findings in progressive familial intrahepatic cholestasis.". J. Pediatr. Gastroenterol. Nutr. 18 (2): 134–41. PMID 7912266.  
  • Ruetz S, Gros P (1994). "Phosphatidylcholine translocase: a physiological role for the mdr2 gene.". Cell 77 (7): 1071–81. doi:10.1016/0092-8674(94)90446-4. PMID 7912658.  
  • Smit JJ, Schinkel AH, Oude Elferink RP, et al. (1993). "Homozygous disruption of the murine mdr2 P-glycoprotein gene leads to a complete absence of phospholipid from bile and to liver disease.". Cell 75 (3): 451–62. doi:10.1016/0092-8674(93)90380-9. PMID 8106172.  
  • van Helvoort A, Smith AJ, Sprong H, et al. (1996). "MDR1 P-glycoprotein is a lipid translocase of broad specificity, while MDR3 P-glycoprotein specifically translocates phosphatidylcholine.". Cell 87 (3): 507–17. doi:10.1016/S0092-8674(00)81370-7. PMID 8898203.  
  • de Vree JM, Jacquemin E, Sturm E, et al. (1998). "Mutations in the MDR3 gene cause progressive familial intrahepatic cholestasis.". Proc. Natl. Acad. Sci. U.S.A. 95 (1): 282–7. doi:10.1073/pnas.95.1.282. PMID 9419367.  
  • Malorni W, Lucia MB, Rainaldi G, et al. (1998). "Intracellular expression of P-170 glycoprotein in peripheral blood mononuclear cell subsets from healthy donors and HIV-infected patients.". Haematologica 83 (1): 13–20. PMID 9542318.  
  • Jacquemin E, Cresteil D, Manouvrier S, et al. (1999). "Heterozygous non-sense mutation of the MDR3 gene in familial intrahepatic cholestasis of pregnancy.". Lancet 353 (9148): 210–1. doi:10.1016/S0140-6736(05)77221-4. PMID 9923886.  
  • Dixon PH, Weerasekera N, Linton KJ, et al. (2000). "Heterozygous MDR3 missense mutation associated with intrahepatic cholestasis of pregnancy: evidence for a defect in protein trafficking.". Hum. Mol. Genet. 9 (8): 1209–17. doi:10.1093/hmg/9.8.1209. PMID 10767346.  
  • Jacquemin E (2002). "Role of multidrug resistance 3 deficiency in pediatric and adult liver disease: one gene for three diseases.". Semin. Liver Dis. 21 (4): 551–62. doi:10.1055/s-2001-19033. PMID 11745043.  
  • Eloranta ML, Heiskanen JT, Hiltunen MJ, et al. (2003). "Multidrug resistance 3 gene mutation 1712delT and estrogen receptor alpha gene polymorphisms in Finnish women with obstetric cholestasis.". Eur. J. Obstet. Gynecol. Reprod. Biol. 104 (2): 109–12. doi:10.1016/S0301-2115(02)00064-7. PMID 12206920.  
  • Eloranta ML, Heiskanen JT, Hiltunen MJ, et al. (2003). "Multidrug resistance 3 gene mutation 1712delT and estrogen receptor alpha gene polymorphisms in Finnish women with obstetric cholestasis.". Eur. J. Obstet. Gynecol. Reprod. Biol. 105 (2): 132–5. PMID 12381474.  

External links



Got something to say? Make a comment.
Your name
Your email address