Recombinant人Apolipoprotein E3 (ab50242)

概述

描述

  • 性质Recombinant
  • 来源Escherichia coli
  • 氨基酸序列
    • 种属Human
    • 序列MKVEQAVETE PEPELRQQTE WQSGQRWELA LGRFWDYLRW VQTLSEQVQE ELLSSQVTQE LRALMDETMK ELKAYKSELE EQLTPVAEET RARLSKELQA AQARLGADME DVCGRLVQYR GEVQAMLGQS TEELRVRLAS HLRKLRKRLL RDADDLQKRL AVYQAGAREG AERGLSAIRE RLGPLVEQGR VRAATVGSLA GQPLQERAQA WGERLRARME EMGSRTRDRL DEVKEQVAEV RAKLEEQAQQ IRLQAEAFQA RLKSWFEPLV EDMQRQWAGL VEKVQAAVGT SAAPVPSDNH

技术指标

Our Abpromise guarantee covers the use of ab50242 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • 应用

    SDS-PAGE

  • 内毒素水平< 0.100 Eu/µg
  • 纯度> 90 % SDS-PAGE.
    ab50242 purity is greater than 90% by SDS-PAGE gel and HPLC analyses.
  • 形式Lyophilised
  • Concentration information loading...

制备和贮存

  • 稳定性和存储

    Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.

    Preservative: None
    Endotoxin level is less than 0.1 ng per µg (1EU/µg).

  • 复溶Centrifuge the vial prior to opening. Reconstitute in 5 mM Sodium Phosphate, pH 7.8 + 0.5 mM DTT to a concentration of 1.0 mg/ml. This solution can then be diluted into other aqueous buffers and stored at 4oC for 1 week or -20oC for future use.

常规信息

  • 别名
    • AD2
    • Apo-E
    • APOE
    • APOE_HUMAN
    • APOE3
    • ApoEb
    • Apolipoprotein E
    • Apoprotein
    see all
  • 功能Mediates the binding, internalization, and catabolism of lipoprotein particles. It can serve as a ligand for the LDL (apo B/E) receptor and for the specific apo-E receptor (chylomicron remnant) of hepatic tissues.
  • 组织特异性Occurs in all lipoprotein fractions in plasma. It constitutes 10-20% of very low density lipoproteins (VLDL) and 1-2% of high density lipoproteins (HDL). APOE is produced in most organs. Significant quantities are produced in liver, brain, spleen, lung, adrenal, ovary, kidney and muscle.
  • 疾病相关Defects in APOE are a cause of hyperlipoproteinemia type 3 (HLPP3) [MIM:107741]; also known as familial dysbetalipoproteinemia. Individuals with HLPP3 are clinically characterized by xanthomas, yellowish lipid deposits in the palmar crease, or less specific on tendons and on elbows. The disorder rarely manifests before the third decade in men. In women, it is usually expressed only after the menopause. The vast majority of the patients are homozygous for APOE*2 alleles. More severe cases of HLPP3 have also been observed in individuals heterozygous for rare APOE variants. The influence of APOE on lipid levels is often suggested to have major implications for the risk of coronary artery disease (CAD). Individuals carrying the common APOE*4 variant are at higher risk of CAD.
    Genetic variations in APOE are associated with Alzheimer disease type 2 (AD2) [MIM:104310]. It is a late-onset neurodegenerative disorder characterized by progressive dementia, loss of cognitive abilities, and deposition of fibrillar amyloid proteins as intraneuronal neurofibrillary tangles, extracellular amyloid plaques and vascular amyloid deposits. The major constituent of these plaques is the neurotoxic amyloid-beta-APP 40-42 peptide (s), derived proteolytically from the transmembrane precursor protein APP by sequential secretase processing. The cytotoxic C-terminal fragments (CTFs) and the caspase-cleaved products such as C31 derived from APP, are also implicated in neuronal death. Note=The APOE*4 allele is genetically associated with the common late onset familial and sporadic forms of Alzheimer disease. Risk for AD increased from 20% to 90% and mean age at onset decreased from 84 to 68 years with increasing number of APOE*4 alleles in 42 families with late onset AD. Thus APOE*4 gene dose is a major risk factor for late onset AD and, in these families, homozygosity for APOE*4 was virtually sufficient to cause AD by age 80. The mechanism by which APOE*4 participates in pathogenesis is not known.
    Defects in APOE are a cause of sea-blue histiocyte disease (SBHD) [MIM:269600]; also known as sea-blue histiocytosis. This disorder is characterized by splenomegaly, mild thrombocytopenia and, in the bone marrow, numerous histiocytes containing cytoplasmic granules which stain bright blue with the usual hematologic stains. The syndrome is the consequence of an inherited metabolic defect analogous to Gaucher disease and other sphingolipidoses.
    Defects in APOE are a cause of lipoprotein glomerulopathy (LPG) [MIM:611771]. LPG is an uncommon kidney disease characterized by proteinuria, progressive kidney failure, and distinctive lipoprotein thrombi in glomerular capillaries. It mainly affects people of Japanese and Chinese origin. The disorder has rarely been described in Caucasians.
  • 序列相似性Belongs to the apolipoprotein A1/A4/E family.
  • 翻译后修饰Synthesized with the sialic acid attached by O-glycosidic linkage and is subsequently desialylated in plasma. O-glycosylated with core 1 or possibly core 8 glycans. Thr-307 is a minor glycosylation site compared to Ser-308.
    Glycated in plasma VLDL of normal subjects, and of hyperglycemic diabetic patients at a higher level (2-3 fold).
    Phosphorylation sites are present in the extracelllular medium.
  • 细胞定位Secreted.
  • Information by UniProt

Recombinant Human Apolipoprotein E3 (ab50242)参考文献

This product has been referenced in:
  • Young EK  et al. HDL-ApoE content regulates the displacement of hepatic lipase from cell surface proteoglycans. Am J Pathol 175:448-57 (2009). SDS-PAGE . Read more (PubMed: 19528346) »

See 1 Publication for this product

Product Wall

Thank you for your inquiry.

We don't know if this protein has any biological activity since we haven't tested this. If you are going to test it in cell culture, I wouldn't include any DTT as this may be toxic. We don't know how long the prote...

Read More

Thank you for contacting us.

I have contacted the lab to determine what buffers these products were lyopholized in on your behalf. While these buffers can change with lot, the present lots used the following:




Read More

Thank you for contacting us with your question and for your patience while I have prepared these documents for you.

We are able to provide certificates of compliance for our products, so I have attached these for the products that you listed....

Read More

Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"