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Human ApoE2 Protein, His Tag

Human ApoE2 Protein, His Tag

Catalog Number: S0A9066 Brand: Starter
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Regular price $120 USD
Regular price Sale price $120 USD
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Product Details

Product Specification


Species Human
Synonyms Apolipoprotein E, Apo-E, APOE
Accession P02649
Amino Acid Sequence

Protein sequence (P02649, Lys19-His317(Arg176Cys), with C-His Tag) KVEQAVETEPEPELRQQTEWQSGQRWELALGRFWDYLRWVQTLSEQVQEELLSSQVTQELRALMDETMKELKAYKSELEEQLTPVAEETRARLSKELQAAQARLGADMEDVCGRLVQYRGEVQAMLGQSTEELRVRLASHLRKLRKRLLRDADDLQKCLAVYQAGAREGAERGLSAIRERLGPLVEQGRVRAATVGSLAGQPLQERAQAWGERLRARMEEMGSRTRDRLDEVKEQVAEVRAKLEEQAQQIRLQAEAFQARLKSWFEPLVEDMQRQWAGLVEKVQAAVGTSAAPVPSDNH

Expression System HEK293
Molecular Weight Predicted MW: 35.9 kDa Observed MW: 35-40 kDa
Purity >95% by SDS-PAGE
Endotoxin <1EU/μg
Conjugation Unconjugated
Physical Appearance Lyophilized powder
Storage Buffer

Lyophilized from a 0.2 μm filtered solution of 20mM Tris-HCl, pH8.0 with 3% trehalose.

Reconstitution Reconstitute no more than 1 mg/mL according to the size in deionized water after rapid centrifugation.
Stability & Storage

12 months from date of receipt, -20 to -70 °C as supplied.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
1 week, 2 to 8 °C under sterile conditions after reconstitution.
Please avoid repeated freeze-thaw cycles.

Background

The APOE2 protein is one of three major isoforms (E2, E3, E4) of apolipoprotein E (APOE), a key lipid transport protein involved in cholesterol metabolism and neuronal repair. Encoded by the APOE gene, APOE2 differs from the most common isoform (APOE3) by a cysteine-for-arginine substitution at position 158 (Cys158Arg), altering its structure and receptor-binding affinity. While APOE2 is associated with a reduced risk of late-onset Alzheimer’s disease (AD) compared to APOE4, homozygous carriers may develop type III hyperlipoproteinemia, a lipid disorder. APOE2 exhibits weaker binding to LDL receptors, impairing clearance of triglyceride-rich lipoproteins. Its neuroprotective effects in AD may stem from enhanced amyloid-β clearance and anti-inflammatory properties.

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Bioactivity

Immobilized Human TREM2 (C-Fc) at 2 μg/mL (100 μL/well) can bind Human ApoE2 Protein, His Tag with EC50 of 0.117-0.132 μg/ml.

SDS-PAGE

2μg(R: reducing conditions)

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