Anti-ABCG5 Antibody Picoband®

ABCG5 (Atp-binding cassette, subfamily g, member 5) also known as STEROLIN 1, is a protein that in humans is encoded by the ABCG5 gene. The protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. This protein is a member of the White subfamily. The protein encoded by this gene functions as a half-transporter to limit intestinal absorption and promote biliary excretion of sterols. The ABCG5 gene contains 13 exons and spans about 28 kb. The ABCG5 gene is mapped on 2p21. It is expressed in a tissue-specific manner in the liver, colon, and intestine. This gene is tandemly arrayed on chromosome 2, in a head-to-head orientation with family member ABCG8. Mutations in this gene may contribute to sterol accumulation and atheroschlerosis, and have been observed in patients with sitosterolemia. Small (2003) reviewed the role of ABC transporters in secretion of cholesterol from liver into bile, particularly the role of ABCG5/ABCG8. The ABCG5 and ABCG8 genes are an example of closely neighboring genes in a head-to-head orientation that, when mutated, cause the same phenotype.

A synthetic peptide corresponding to a sequence at the N-terminus of human ABCG5, different from the related mouse and rat sequences by two amino acids.

Atherosclerosis, Cancer, Cancer Metabolism, Cardiovascular, Cholesterol Metabolism, Heart Disease, Lipid and Lipoprotein Metabolism, Lipid Metabolism, Lipids/Lipoproteins, Metabolic Signaling Pathway, Metabolic Signaling Pathways, Metabolism, Metabolism of Lipids and Lipoproteins, Pathways and Processes, Signal Transduction

Transporter that appears to play an indispensable role in the selective transport of the dietary cholesterol in and out of the enterocytes and in the selective sterol excretion by the liver into bile.

1. Lee, M.-H., Lu, K., Hazard, S., Yu, H., Shulenin, S., Hidaka, H., Kojima, H., Allikmets, R., Sakuma, N., Pegoraro, R., Srivastava, A. K., Salen, G., Dean, M., Patel, S. B. Identification of a gene, ABCG5, important in the regulation of dietary cholesterol absorption. Nature Genet. 27: 79-83, 2001. 2. Lu, K., Lee, M. H., Yu, H., Zhou, Y., Sandell, S. A., Salen, G., Patel, S. B. Molecular cloning, genomic organization, genetic variations, and characterization of murine sterolin genes Abcg5and Abcg8. J. Lipid Res. 43: 565-578, 2002. 3. Small, D. M. Role of ABC transporters in secretion of cholesterol from liver into bile. (Commentary) Proc. Nat. Acad. Sci. 100: 4-6, 2003.

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.