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  3. Apolipoprotein E/APOE3 Protein, Human (Biotinylated, HEK293, His)

Apolipoprotein E/APOE3 Protein, Human (Biotinylated, HEK293, His)

Cat. No.: HY-P78062
COA Handling Instructions

Apolipoprotein E (APOE) plays a key role in lipoprotein-mediated lipid transport and is a core component in the production, transformation, and clearance of plasma lipoproteins. As an amphipathic molecule, APOE binds to various lipoprotein particles, including chylomicrons, chylomicron remnants, VLDL, and IDL, favoring HDL. Apolipoprotein E/APOE Protein, Human (Biotinylated, HEK293, His) is the recombinant human-derived Apolipoprotein E/APOE protein, expressed by HEK293 , with N-His labeled tag. The total length of Apolipoprotein E/APOE Protein, Human (Biotinylated, HEK293, His) is 299 a.a., with molecular weight of 35-40 kDa.

For research use only. We do not sell to patients.

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Description

Apolipoprotein E (APOE) plays a key role in lipoprotein-mediated lipid transport and is a core component in the production, transformation, and clearance of plasma lipoproteins. As an amphipathic molecule, APOE binds to various lipoprotein particles, including chylomicrons, chylomicron remnants, VLDL, and IDL, favoring HDL. Apolipoprotein E/APOE Protein, Human (Biotinylated, HEK293, His) is the recombinant human-derived Apolipoprotein E/APOE protein, expressed by HEK293 , with N-His labeled tag. The total length of Apolipoprotein E/APOE Protein, Human (Biotinylated, HEK293, His) is 299 a.a., with molecular weight of 35-40 kDa.

Background

Apolipoprotein E (APOE) is a crucial player in lipoprotein-mediated lipid transport, serving as a core component of plasma lipoproteins involved in their production, conversion, and clearance. Functioning as an amphipathic molecule, APOE associates with various lipoprotein particles, including chylomicrons, chylomicron remnants, very low-density lipoproteins (VLDL), and intermediate density lipoproteins (IDL), with a preference for high-density lipoproteins (HDL). It engages with a range of cellular receptors, such as the LDL receptor (LDLR), LDL receptor-related proteins (LRP1, LRP2, and LRP8), and the very low-density lipoprotein receptor (VLDLR), facilitating cellular uptake of APOE-containing lipoprotein particles. Additionally, APOE exhibits heparin-binding activity, interacting with heparan-sulfate proteoglycans on cell surfaces, supporting the capture and receptor-mediated uptake of APOE-containing lipoproteins. APOE's main function involves mediating lipoprotein clearance through hepatocyte uptake and participating in the biosynthesis and uptake of VLDLs by peripheral tissues for triglyceride delivery and energy storage. It crucially contributes to lipid homeostasis, participating in reverse cholesterol transport and playing roles in the central nervous system, immune responses, and transcriptional regulation, notably in interactions with HCV during microbial infection.

Biological Activity

Human TREM2, hFc Tag captured on CM5 Chip via Protein A can bind Biotinylated Human APOE3, His Tag with an affinity constant of 1.47 μM as determined in SPR assay (Biacore T200).

Species

Human

Source

HEK293

Tag

N-His

Accession

P02649 (K19-H317)

Gene ID

348  [NCBI]

Molecular Construction
N-term
His
APOE (K19-H317)
Accession # P02649
C-term
Synonyms
Apolipoprotein E; Apo-E; APOE; apolipo E; APOE3
Molecular Weight

35-45 kDa

Purity

Greater than 95% as determined by Tris-Bis PAGE.

Appearance

Lyophilized powder

Formulation

Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Documentation

Apolipoprotein E/APOE3 Protein, Human (Biotinylated, HEK293, His) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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Product Name:
Apolipoprotein E/APOE3 Protein, Human (Biotinylated, HEK293, His)
Cat. No.:
HY-P78062
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