Anti-BCRP/ABCG2 Antibody Picoband®

ABCG2 (Atp-binding cassette, subfamily g, member 2) also known as ABCP, BCRP or MRX, is a protein that in humans is encoded by the ABCG2 gene. It is mapped on 4q22.1. The ABCG2 gene encodes a membrane transporter belonging to the ATP-binding cassette (ABC) superfamily of membrane transporters, which are involved in the trafficking of biologic molecules across cell membranes. The ABCG2 protein is also a high capacity transporter for uric acid excretion in the kidney, liver, and gut. In vitro assays of isolated membrane preparations revealed a high-capacity, vanadate-sensitive ATPase activity associated with ABCG2 expression that was stimulated by compounds known to be transported by this protein. ABCG2 is likely functioning as a homodimer or homooligomer in this expression system since it is unlikely that putative Sf9 transport partners would be overexpressed at similarly high levels. Abcg2 transports pheophorbide-a, which occurs in various plant-derived foods and food supplements and is highly efficient in limiting its uptake from ingested food. ABCG2 is a major factor in the concentrative transfer of drugs, carcinogens, and dietary toxins to the milk of mice, cows, and humans.

1. Jonker, J. W., Merino, G., Musters, S., van Herwaarden, A. E., Bolscher, E., Wagenaar, E., Mesman, E., Dale, T. C., Schinkel, A. H. The breast cancer resistance protein BCRP (ABCG2) concentrates drugs and carcinogenic xenotoxins into milk. Nature Med. 11: 127-129, 2005. 2. Matsuo, H., Takada, T., Ichida, K., Nakamura, T., Nakayama, A., Ikebuchi, Y., Ito, K., Kusanagi, Y., Chiba, T., Tadokoro, S., Takada, Y., Oikawa, Y., and 22 others. Common defects of ABCG2, a high-capacity urate exporter, cause gout: a function-based genetic analysis in a Japanese population.Sci. Transl. Med. 1: 5ra11, 2009. 3. Ozvegy, C., Litman, T., Szakacs, G., Nagy, Z., Bates, S., Varadi, A., Sarkadi, B. Functional characterization of the human multidrug transporter, ABCG2, expressed in insect cells.Biochem. Biophys. Res. Commun. 285: 111-117, 2001.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.