Human ApoE3

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Cat-Nr.100-125S
Size100 µg
Price95 €
SourceE. coli
Formulationlyophilized
Purity Confirmation> 90% by SDS-PAGE & HPLC analyses
Length [aa]300
Molecular Weight34.4 kDa
Endotoxin Levels< 0.1 ng/µg of protein (<1EU/µg)
Biological ActivityDetermined by its ability to stimulate the proliferation of human SH-SY5Y cells.
Species ReactivityHuman
Buffer20 mM Sodium Phosphate, pH 7.8 + 0.5 mM DTT
SynonymsAPOE; AD2; LPG; LDLCQ5
DescriptionApoE3 belongs to a group of proteins that bind reversibly with lipoprotein and play an important role in lipid metabolism. In addition to facilitating solubilization of lipids, these proteins help to maintain the structural integrity of lipoproteins, serve as ligands for lipoprotein receptors, and regulate the activity of enzymes involved in lipid metabolism. Significant quantities of ApoE are produced in liver and brain and to some extent in almost every organ. ApoE exists in three major isoforms; E2, E3, and E4, which differ from one another by a single amino-acid substitution. E3 is the most common isoform and is present in 40-90% of the population. Recombinant human ApoE3 is a 34.0 kDa protein containing 300 amino acid residues.
Protein SequenceMKVEQAVETE 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
Uniprot IDP02649
Protein RefSeqNP_000032.1
mRNA RefSeqNM_000041.2

Reference

  1. Apolipoprotein E4 Elicits Lysosomal Cathepsin D Release, Decreased Thioredoxin-1 Levels, and Apoptosis. T. Persson et al., J Alzheimers Dis. 2017; 56(2): 601–617.
  2. Thioredoxin-80 is a product of alpha-secretase cleavage that inhibits amyloid-beta aggregation and is decreased in Alzheimer's disease brain. F. Gil-Bea et al., EMBO Mol Med. 2012 Oct; 4(10): 1097–1111.

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