Aliases for ABCG2 Gene
- ATP-Binding Cassette, Sub-Family G (WHITE), Member 2 (Junior Blood Group) 2 3
- Placenta-Specific ATP-Binding Cassette Transporter 3 4
- Mitoxantrone Resistance-Associated Protein 3 4
- Breast Cancer Resistance Protein 3 4
- Urate Exporter 3 4
- CDw338 3 4
- BCRP1 3 4
- ABCP 3 4
- BCRP 3 4
- MXR 3 4
- Multi Drug Resistance Efflux Transport ATP-Binding Cassette Sub-Family G (WHITE) Member 2 3
- ATP-Binding Cassette, Sub-Family G (WHITE), Member 2 2
- ATP-Binding Cassette Transporter G2 3
External Ids for ABCG2 Gene
Previous GeneCards Identifiers for ABCG2 Gene
The membrane-associated protein encoded by this gene is included in 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 White subfamily. Alternatively referred to as a breast cancer resistance protein, this protein functions as a xenobiotic transporter which may play a major role in multi-drug resistance. It likely serves as a cellular defense mechanism in response to mitoxantrone and anthracycline exposure. Significant expression of this protein has been observed in the placenta, which may suggest a potential role for this molecule in placenta tissue. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]
GeneCards Summary for ABCG2 Gene
ABCG2 (ATP-Binding Cassette, Sub-Family G (WHITE), Member 2 (Junior Blood Group)) is a Protein Coding gene. Diseases associated with ABCG2 include erythroplakia and placental choriocarcinoma. Among its related pathways are Metabolism and Transport of glucose and other sugars, bile salts and organic acids, metal ions and amine compounds. GO annotations related to this gene include protein homodimerization activity and ATPase activity. An important paralog of this gene is ABCG8.
UniProtKB/Swiss-Prot for ABCG2 Gene
High-capacity urate exporter functioning in both renal and extrarenal urate excretion. Plays a role in porphyrin homeostasis as it is able to mediates the export of protoporhyrin IX (PPIX) both from mitochondria to cytosol and from cytosol to extracellular space, and cellular export of hemin, and heme. Xenobiotic transporter that may play an important role in the exclusion of xenobiotics from the brain. Appears to play a major role in the multidrug resistance phenotype of several cancer cell lines. Implicated in the efflux of numerous drugs and xenobiotics: mitoxantrone, the photosensitizer pheophorbide, camptothecin, methotrexate, azidothymidine (AZT), and the anthracyclines daunorubicin and doxorubicin.
ATP-binding cassette (ABC) transporters form one of the largest groups of paralogous protein families that have a wide diversity of functions and substrates. Specificity has been shown for small and large molecules, highly charged molecules and highly hydrophobic systems.