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Active Apolipoprotein A2 (APOA2)

Apo-A2; Apolipoprotein A-II; ProapoA-II; Truncated apolipoprotein A-II

ACTIVITY TEST

Apolipoprotein A2 (APOA2) is a major protein component of serum HDL. It is produced by the liver and is involved in cholesteryl ester formation and cholesterol transport from tissues to the liver. Polymorphisms of APOA2 are associated with disorders of cholesterol and fatty acid metabolism. APOA2 can form disulfide-linked 17 kDa homodimers and heterodimers with other apolipoproteins. Mature human APOA2 shares 96% aa sequence identity with chimpanzee APOA2 and 48% - 66% aa sequence identity with bovine, equine, mouse and rat APOA2. A functional ELISA assay was conducted to detect the interaction of recombinant human APOA2 and recombinant rat APOC1. Briefly, APOC1 was diluted serially in PBS with 0.01% BSA (pH 7.4). Duplicate samples of 100 μl were then transferred to APOA2-coated (1ug/ml, 100 ul/well) microtiter wells and incubated for 1h at 37℃. Wells were washed with PBST and incubated for 1h with anti-APOC1 pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody for 1h at 37℃, wells were aspirated and washed 5 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37℃. Finally, add 50 µL stop solution to the wells and read at 450/630nm immediately. The binding activity of recombinant human APOA2 and recombinant rat APOC1 was shown in Figure 1, the concentration of APOC1 that produces 50% optimal binding response is found to be approximately 87.2 ng/mL.

USAGE

Reconstitute in 10mM PBS (pH7.4) to a concentration of 0.1-1.0 mg/mL. Do not vortex.

STORAGE

Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.

STABILITY

The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.

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Magazine Citations
Morfovirtual 2014 EFECTO PROTECTOR DEL TRATAMIENTO CON NEUROEPO SOBRE LA GLIA DE LA CORTEZA CEREBRAL EN RATONES TRANSGéNICOS CON LA ENFERMEDAD DE ALZHEIMER. Sld:Source
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