P-glycoprotein

P-glycoprotein

Identifiers Symbols ABCB1; ABC20; CD243; CLCS; GP170; MDR1; P-GP; PGY1 External IDs OMIM: 171050 MGI: 97570 HomoloGene: 55496 ChEMBL: 4302 GeneCards: ABCB1 Gene EC number 3.6.3.44

Gene Ontology
Molecular function transporter activity
protein binding
ATP binding
xenobiotic-transporting ATPase activity
ATPase activity, coupled to transmembrane movement of substances
Cellular component Golgi membrane
plasma membrane
cell surface
membrane
integral to membrane
apical plasma membrane
intercellular canaliculus
Biological process G2/M transition of mitotic cell cycle
transport
drug transmembrane transport
response to drug
small molecule metabolic process
transmembrane transport
stem cell proliferation
Sources: Amigo / QuickGO
RNA expression pattern More reference expression data Orthologs Species Human Mouse Entrez 5243 18671 Ensembl ENSG00000085563 ENSMUSG00000040584 UniProt P08183 P21447 RefSeq (mRNA) NM_000927.4 NM_011076.2 RefSeq (protein) NP_000918.2 NP_035206.2 Location (UCSC) Chr 7:
87.13 – 87.34 Mb Chr 5:
8.66 – 8.75 Mb PubMed search
ABCB1 at EBI Gene Expression Atlas
ABCB1 is differentially expressed in 97 experiments : 26 organism parts: kidney, bone marrow, ...; 29 disease states: normal, glioblastoma, ...; 30 cell types, 22 cell lines, 11 compound treatments and 16 other conditions.
Factor Value Factor Up/Down
Legend: - number of studies the gene is up/down in
Normal Disease state 10/3
None Compound treatment 3/0
Stromal cell Cell type 1/2
Kidney Cell type 2/0
MDA-MB-231 Cell line 0/2
Glioblastoma Disease state 0/2
Epithelial cell Cell type 0/2
HeLa Cell line 0/2
Primary Disease staging 2/0
Bone marrow Organism part 0/2
ABCB1 expression data in ATLAS

P-glycoprotein 1 (permeability glycoprotein, abbreviated as P-gp or Pgp) also known as multidrug resistance protein 1 (MDR1) or ATP-binding cassette sub-family B member 1 (ABCB1) or cluster of differentiation 243 (CD243) is a glycoprotein that in humans is encoded by the ABCB1 gene. P-gp is a well-characterized ABC-transporter (which transports a wide variety of substrates across extra- and intracellular membranes) of the MDR/TAP subfamily.

Pgp is extensively distributed and expressed in the intestinal epithelium, hepatocytes, renal proximal tubular cells, adrenal gland and capillary endothelial cells comprising the blood-brain and blood-testis barrier.

Read more about P-glycoprotein:  Function, Structure, Mechanism of Action, Tissue Distribution, Detecting The Activity of The Transporter, History

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P-glycoprotein - History
... Radioactive verapamil can be used for measuring P-glycoprotein function with positron emission tomography ...