Anti-Apolipoprotein A I/APOA1 Antibody Picoband®

Apolipoprotein A-1, also known as APOA1, is a human protein with a specific role in lipid metabolism. It binds to lipopolysaccharide or endotoxin, and has a major role in the anti-endotoxin function of HDL. The gene is mapped to 11q23. And it is a single polypeptide chain with 243 amino acid residues of known primary amino acid sequence. The ApoA-I protein promotes cholesterol efflux from tissues to the liver for excretion. It is a cofactor for lecithin cholesterolacyltransferase (LCAT) which is responsible for the formation of most plasma cholesteryl esters. ApoA-I is also isolated as a prostacyclin (PGI2) stabilizing factor, and thus may have an anticlotting effect. Defects in the gene encoding it are associated with HDL deficiencies, including Tangier disease, and with systemic non-neuropathic amyloidosis. Additionally, ApoA-I overexpression promotes macrophage-specific reverse cholesterol transport.

Apolipoprotein A-I; Apo-AI; ApoA-I; Apolipoprotein A1; Proapolipoprotein A-I; ProapoA-I; Truncated apolipoprotein A-I; Apolipoprotein A-I (1-242) ; APOA1

E. coli-derived human APOA1 recombinant protein (Position: D25-Q267) . Human APOA1 shares 64% and 61.7% amino acid (aa) sequence identity with mouse and rat APOA1, respectively.

Major protein of plasma HDL, also found in chylomicrons. Synthesized in the liver and small intestine. The oxidized form at Met-110 and Met-136 is increased in individuals with increased risk for coronary artery disease, such as in carrier of the eNOSa/b genotype and exposure to cigarette smoking. It is also present in increased levels in aortic lesions relative to native ApoA-I and increased levels are seen with increasing severity of disease. .

Lipid and Lipoprotein Metabolism, Lipid Metabolism, Lipids/Lipoproteins, Metabolic Signaling Pathways, Metabolism, Pathways and Processes, Signal Transduction

Participates in the reverse transport of cholesterol from tissues to the liver for excretion by promoting cholesterol efflux from tissues and by acting as a cofactor for the lecithin cholesterol acyltransferase (LCAT) . As part of the SPAP complex, activates spermatozoa motility. .

1. Brewer, H. B., Jr.; Fairwell, T.; LaRue, A.; Ronan, R.; Houser, A.; Bronzert, T. J. : The amino acid sequence of human apoA-I, an apolipoprotein isolated from high absorbance lipoproteins. Biochem. Biophys. Res. Commun. 80: 623-630, 1978. 2. Ma J, Liao XL, Lou B, Wu MP (2004) . Role of apolipoprotein A-I in protecting against endotoxin toxicity. Acta Biochim. Biophys. Sin. (Shanghai) 36 (6) : 419–24. 3. Yui Y, Aoyama T, Morishita H, Takahashi M, Takatsu Y, Kawai C (1988) . Serum prostacyclin stabilizing factor is identical to apolipoprotein A-I (Apo A-I) . A novel function of Apo A-I. J. Clin. Invest. 82 (3) : 803–7. 4. Zhang, Y.; Zanotti, I.; Reilly, M. P.; Glick, J. M.; Rothblat, G. H.; Rader, D. J. : Overexpression of apolipoprotein A-I promotes reverse transport of cholesterol from macrophages to feces in vivo. Circulation 108: 661-663, 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.