U.S. flag

An official website of the United States government

Format

Send to:

Choose Destination

ABCB4 ATP binding cassette subfamily B member 4 [ Homo sapiens (human) ]

Gene ID: 5244, updated on 8-Dec-2022

Summary

Official Symbol
ABCB4provided by HGNC
Official Full Name
ATP binding cassette subfamily B member 4provided by HGNC
Primary source
HGNC:HGNC:45
See related
Ensembl:ENSG00000005471 MIM:171060; AllianceGenome:HGNC:45
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
GBD1; ICP3; MDR2; MDR3; PGY3; ABC21; MDR2/3; PFIC-3
Summary
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. [provided by RefSeq, Jul 2008]
Expression
Biased expression in liver (RPKM 23.8), adrenal (RPKM 3.1) and 3 other tissues See more
Orthologs
NEW
Try the new Gene table
Try the new Transcript table

Genomic context

See ABCB4 in Genome Data Viewer
Location:
7q21.12
Exon count:
34
Annotation release Status Assembly Chr Location
110 current GRCh38.p14 (GCF_000001405.40) 7 NC_000007.14 (87365896..87476027, complement)
110 current T2T-CHM13v2.0 (GCF_009914755.1) 7 NC_060931.1 (88651457..88725450, complement)
105.20220307 previous assembly GRCh37.p13 (GCF_000001405.25) 7 NC_000007.13 (87031012..87104996, complement)

Chromosome 7 - NC_000007.14Genomic Context describing neighboring genes Neighboring gene uncharacterized LOC105375384 Neighboring gene transmembrane protein 243 Neighboring gene TP53 target 1 Neighboring gene carnitine O-octanoyltransferase Neighboring gene heterogeneous nuclear ribonucleoprotein A1 pseudogene 9 Neighboring gene ATP binding cassette subfamily B member 1 Neighboring gene small nucleolar RNA U13

Genomic regions, transcripts, and products

Expression

  • Project title: HPA RNA-seq normal tissues
  • Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
  • BioProject: PRJEB4337
  • Publication: PMID 24309898
  • Analysis date: Wed Apr 4 07:08:55 2018

Bibliography

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Phenotypes

EBI GWAS Catalog

Description
Genome-wide association study identifies new susceptibility loci for epithelial ovarian cancer in Han Chinese women.
EBI GWAS Catalog

HIV-1 interactions

Protein interactions

Protein Gene Interaction Pubs
Envelope surface glycoprotein gp120 env Treatment of CD4+ and CD8+ T cells with HIV-1 gp120 increases the intracellular expression of P-glycoprotein (P-gp) PubMed
Tat tat Disruption of lipid rafts by depletion of membrane cholesterol with methyl-beta-cyclodextrin abolishes Tat-mediated RhoA activation and P-glycoprotein (P-gp) upregulation PubMed

Go to the HIV-1, Human Interaction Database

Pathways from PubChem

Interactions

Products Interactant Other Gene Complex Source Pubs Description

General gene information

Markers

Homology

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables ABC-type transporter activity IEA
Inferred from Electronic Annotation
more info
 
enables ATP binding IEA
Inferred from Electronic Annotation
more info
 
enables ATP hydrolysis activity IEA
Inferred from Electronic Annotation
more info
 
enables ATPase-coupled transmembrane transporter activity IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
enables ATPase-coupled transmembrane transporter activity IDA
Inferred from Direct Assay
more info
PubMed 
enables ATPase-coupled transmembrane transporter activity IMP
Inferred from Mutant Phenotype
more info
PubMed 
NOT enables ceramide floppase activity IDA
Inferred from Direct Assay
more info
PubMed 
enables phosphatidylcholine floppase activity IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
enables phosphatidylcholine floppase activity IDA
Inferred from Direct Assay
more info
PubMed 
enables phosphatidylcholine floppase activity IMP
Inferred from Mutant Phenotype
more info
PubMed 
enables phospholipid transporter activity TAS
Traceable Author Statement
more info
 
enables protein binding IPI
Inferred from Physical Interaction
more info
PubMed 
Process Evidence Code Pubs
involved_in bile acid secretion ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in cellular response to bile acid IDA
Inferred from Direct Assay
more info
PubMed 
NOT involved_in ceramide translocation IDA
Inferred from Direct Assay
more info
PubMed 
involved_in lipid homeostasis IDA
Inferred from Direct Assay
more info
PubMed 
involved_in lipid metabolic process TAS
Traceable Author Statement
more info
PubMed 
involved_in phospholipid translocation IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
involved_in phospholipid translocation IDA
Inferred from Direct Assay
more info
PubMed 
involved_in phospholipid translocation IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in positive regulation of cholesterol transport IDA
Inferred from Direct Assay
more info
PubMed 
involved_in positive regulation of cholesterol transport IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in positive regulation of phospholipid translocation IDA
Inferred from Direct Assay
more info
PubMed 
involved_in positive regulation of phospholipid transport IDA
Inferred from Direct Assay
more info
PubMed 
involved_in positive regulation of phospholipid transport IMP
Inferred from Mutant Phenotype
more info
PubMed 
involved_in response to fenofibrate ISS
Inferred from Sequence or Structural Similarity
more info
 
involved_in transmembrane transport IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
involved_in transmembrane transport TAS
Traceable Author Statement
more info
 
involved_in xenobiotic transport IEA
Inferred from Electronic Annotation
more info
 
Component Evidence Code Pubs
located_in actin cytoskeleton IDA
Inferred from Direct Assay
more info
 
located_in apical plasma membrane IDA
Inferred from Direct Assay
more info
PubMed 
located_in clathrin-coated vesicle IEA
Inferred from Electronic Annotation
more info
 
located_in cytoplasm IDA
Inferred from Direct Assay
more info
PubMed 
located_in cytosol IDA
Inferred from Direct Assay
more info
 
located_in extracellular exosome HDA PubMed 
located_in focal adhesion IDA
Inferred from Direct Assay
more info
 
located_in intercellular canaliculus IEA
Inferred from Electronic Annotation
more info
 
is_active_in membrane IBA
Inferred from Biological aspect of Ancestor
more info
PubMed 
located_in membrane raft IEA
Inferred from Electronic Annotation
more info
 
located_in nucleoplasm IDA
Inferred from Direct Assay
more info
 
located_in plasma membrane IDA
Inferred from Direct Assay
more info
PubMed 
located_in plasma membrane TAS
Traceable Author Statement
more info
 

General protein information

Preferred Names
phosphatidylcholine translocator ABCB4
Names
ATP-binding cassette sub-family B member 4
ATP-binding cassette, sub-family B (MDR/TAP), member 4
P-glycoprotein 3
P-glycoprotein-3/multiple drug resistance-3
multidrug resistance protein 3
multiple drug resistance 3
NP_000434.1
NP_061337.1
NP_061338.1
XP_011514610.4
XP_011514611.4
XP_047276431.1
XP_047276432.1
XP_047276433.1

NCBI Reference Sequences (RefSeq)

NEW Try the new Transcript table

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

Genomic

  1. NG_007118.3 RefSeqGene

    Range
    5347..79331
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_000443.4NP_000434.1  phosphatidylcholine translocator ABCB4 isoform A

    See identical proteins and their annotated locations for NP_000434.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (A) encodes the predominant isoform (A).
    Source sequence(s)
    AC005045, AC005068, AC006154
    Consensus CDS
    CCDS5605.1
    UniProtKB/Swiss-Prot
    P21439
    Related
    ENSP00000496956.2, ENST00000649586.2
    Conserved Domains (1) summary
    PTZ00265
    Location:181266
    PTZ00265; multidrug resistance protein (mdr1); Provisional
  2. NM_018849.3NP_061337.1  phosphatidylcholine translocator ABCB4 isoform B

    See identical proteins and their annotated locations for NP_061337.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (B) uses an alternate in-frame splice site in the 3' coding region, compared to variant A, resulting in a longer protein (isoform B).
    Source sequence(s)
    AC005045, AC005068, AC006154
    Consensus CDS
    CCDS5606.1
    UniProtKB/Swiss-Prot
    P21439, Q14813
    Related
    ENSP00000265723.4, ENST00000265723.8
    Conserved Domains (3) summary
    cd03249
    Location:395631
    ABC_MTABC3_MDL1_MDL2; ATP-binding cassette domain of a mitochondrial protein MTABC3 and related proteins
    PTZ00265
    Location:181273
    PTZ00265; multidrug resistance protein (mdr1); Provisional
    pfam00664
    Location:61345
    ABC_membrane; ABC transporter transmembrane region
  3. NM_018850.3NP_061338.1  phosphatidylcholine translocator ABCB4 isoform C

    See identical proteins and their annotated locations for NP_061338.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (C) lacks an alternate in-frame exon, compared to variant A, resulting in a shorter protein (isoform C).
    Source sequence(s)
    AC005045, AC005068, AC006154
    Consensus CDS
    CCDS5607.1
    UniProtKB/Swiss-Prot
    P21439
    Related
    ENSP00000392983.1, ENST00000453593.5
    Conserved Domains (3) summary
    cd03249
    Location:395631
    ABC_MTABC3_MDL1_MDL2; ATP-binding cassette domain of a mitochondrial protein MTABC3 and related proteins
    PTZ00265
    Location:181219
    PTZ00265; multidrug resistance protein (mdr1); Provisional
    pfam00664
    Location:61345
    ABC_membrane; ABC transporter transmembrane region

RefSeqs of Annotated Genomes: Homo sapiens Annotation Release 110 details...Open this link in a new tab

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000007.14 Reference GRCh38.p14 Primary Assembly

    Range
    87365896..87476027 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_011516309.4XP_011514611.4  phosphatidylcholine translocator ABCB4 isoform X2

  2. XM_011516308.4XP_011514610.4  phosphatidylcholine translocator ABCB4 isoform X1

  3. XM_047420476.1XP_047276432.1  phosphatidylcholine translocator ABCB4 isoform X4

  4. XM_047420475.1XP_047276431.1  phosphatidylcholine translocator ABCB4 isoform X3

  5. XM_047420477.1XP_047276433.1  phosphatidylcholine translocator ABCB4 isoform X5

RNA

  1. XR_007060054.1 RNA Sequence

  2. XR_007060047.1 RNA Sequence

  3. XR_007060046.1 RNA Sequence

  4. XR_007060050.1 RNA Sequence

  5. XR_007060049.1 RNA Sequence

  6. XR_007060048.1 RNA Sequence

  7. XR_007060045.1 RNA Sequence

  8. XR_007060052.1 RNA Sequence

  9. XR_007060053.1 RNA Sequence

  10. XR_007060051.1 RNA Sequence

  11. XR_007060055.1 RNA Sequence

  12. XR_001744810.3 RNA Sequence

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060931.1 Alternate T2T-CHM13v2.0

    Range
    88651457..88725450 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)