Recombinant Rabbit Apolipoprotein E (APOE) Protein (His-SUMO&Myc)

Name: Recombinant Rabbit Apolipoprotein E (APOE) Protein (His-SUMO&Myc)
Brand: Beta LifeScience
SKU: BLC-02256P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: Cytokines, Recombinant proteins

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Product Overview

Description	Recombinant Rabbit Apolipoprotein E (APOE) Protein (His-SUMO&Myc) is produced by our E.coli expression system. This is a protein fragment.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	P18287
Target Symbol	APOE
Synonyms	APOEApolipoprotein E; Apo-E
Species	Oryctolagus cuniculus (Rabbit)
Expression System	E.coli
Tag	N-10His-SUMO&C-Myc
Target Protein Sequence	TEQEVEVPEQARWKAGQPWELALGRFWDYLRWVQSLSDQVQEELLSSQVTQELTMLMEETMKEVKAYKSELEEQLSPMAQEHRARLSKELQVAGALEADMEDVCNRLAQYRGEAQAMLGQSTEELARAFSSHLRKLRKRLLRDAEDLQKRMAVYGAGAREGAERGVSAVRERLGSRLERGRLRVATVGTLAGRPLRERAQAWGERLRGHLEEVGSRARDRLNEVREQVEEVRVKVEEQAPQMRLQAEAFQARLKSWFEPLVEDMQRQWAGLVEKLQAAMPSKAPAAAPIENQ
Expression Range	20-311aa
Protein Length	Partial
Mol. Weight	53.6kDa
Research Area	Cardiovascular
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	APOE 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 and the very low-density lipoprotein receptor/VLDLR that mediate the cellular uptake of the APOE-containing lipoprotein particles. Finally, APOE has also a heparin-binding activity and binds heparan-sulfate proteoglycans on the surface of cells, a property that supports the capture and the receptor-mediated uptake of APOE-containing lipoproteins by cells.
Subcellular Location	Secreted. Secreted, extracellular space. Secreted, extracellular space, extracellular matrix.
Protein Families	Apolipoprotein A1/A4/E family
Database References	KEGG: ocu:100009337 UniGene: Ocu.6224

Gene Functions References

we report the efficient creation of an APOE knockout rabbit by using zinc finger nucleases. The knockout rabbits had drastically elevated cholesterol and moderately increased triglyceride levels, mimicking symptoms in human heart disease. PMID: 25216764
These differentially expressed proteins associated with key mechanisms involved in atherosclerosis and signaling mechanisms related with vitamin E. PMID: 23796494
The molar ratio ApoE/ApoA-I is negatively correlated with the enzyme activity, and positively correlated with increases in the intima-media thickness of common carotid wall and cardiac dysfunction signs. PMID: 22562159
ApoE mimetic peptide reduces plasma lipid hydroperoxide content with a concomitant increase in HDL paraoxonase activity PMID: 20221865
The identification of disulphide-linked apoE dimers in cortical and hippocampal tissues represents a distinct structural difference between the apoE3 and apoE4 isoforms that may have functional consequences. PMID: 20170526

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.