- SynonymApolipoprotein E,APOE,Apo-E
- SourceHuman Apolipoprotein E, His Tag (APE-H5246) is expressed from human 293 cells (HEK293). It contains AA Lys 19 - His 317 (Accession # P02649-1).Predicted N-terminus: HisRequest for sequence
- Molecular Characterization
This protein carries a polyhistidine tag at the N-terminus.
The protein has a calculated MW of 36.1 kDa. The protein migrates as 35-40 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
- EndotoxinLess than 1.0 EU per μg by the LAL method.
- Purity
>90% as determined by SDS-PAGE.
- Formulation
Lyophilized from 0.22 μm filtered solution in PBS, 5 mM CHAPS, 2 mM DTT, pH 7.4. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
- Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
- Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Human Apolipoprotein E, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.
Loaded Biotinylated Human TREM2, His,Avitag (Cat. No. TR2-H82E7) on SA Biosensor, can bind Human Apolipoprotein E, His Tag (Cat. No. APE-H5246) with an affinity constant of 37.1 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
- BackgroundAPOE is an apolipoprotein, a protein associating with lipid particles, that mainly functions in lipoprotein-mediated lipid transport between organs via the plasma and interstitial fluids. APOE is a core component of plasma lipoproteins and is involved in their production, conversion and clearance. Apoliproteins are amphipathic molecules that interact both with lipids of the lipoprotein particle core and the aqueous environment of the plasma. As such, APOE associates with chylomicrons, chylomicron remnants, very low density lipoproteins (VLDL) and intermediate density lipoproteins (IDL) but shows a preferential binding to high-density lipoproteins (HDL). It also binds a wide range of cellular receptors including the LDL receptor/LDLR, the LDL receptor-related proteins LRP1, LRP2 and LRP8 and the very low-density lipoprotein receptor/VLDLR that mediate the cellular uptake of the APOE-containing lipoprotein particles.
- References
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