ApoE4, human recombinant | 4699

ApoE belongs to a group of proteins that bind reversibly with lipoprotein and play an important role in lipid metabolism. In addition to facilitating solublization 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 is an important constituent of all plasma lipoproteins. It’s interaction with specific ApoE receptor enables uptake of chylomicron remnants by liver cells, which is an essential step during normal lipid metabolism. It also binds with the LDL receptor (apo B/E). Defects in ApoE are a cause of hyperlipoproteinemia type III. ApoE exists in three major isoforms; E2, E3, and E4, which differ from one another by a single amino-acid substitution. Individuals heterozygous for the ApoE4 allele are at higher risk of late-onset Alzheimer’s disease. Recombinant human ApoE4 is a 34.4 kDa protein containing 300 amino acid residues (Accession No. AAB59397). This protein has a N-terminal His-tag.

4699 | ApoE4 human recombinant DataSheet

Biomolecule/Target: N/A

Synonyms: Apolipoprotein E4

Alternates names: Glioma-derived growth factor, GDGF, Osteosarcoma-derived Growth Factor, ODGF, PDGF-AA, PDGF-1, Alpha platelet-derived growth factor receptor, CD140 antigen-like family member A, CD140a antigen, Platelet-derived growth factor alpha receptor

Taglines: Apolipoprotein essential for the normal catabolism of triglyceride-rich lipoprotein constituents

NCBI Gene ID #: 5154

NCBI Gene Symbol: PDGFA

Gene Source: Human

Accession #: P04085

Recombinant: Yes

Source: E. coli

Purity by SDS-PAGEs: 98%

Assay: SDS-PAGE

Purity: 90%

Assay #2: HPLC

Endotoxin Level: <0.1 ng/g

Activity (Specifications/test method): N/A

Biological activity: The ED as determined by the dose-dependent stimulation of thymidine uptake by Balb-c 3T3 cells is < 1 ng/ml, corresponding to a specific activity of >1 x 10 units/mg.

Results: N/A

Binding Capacity: N/A

Unit Definition: N/A

Molecular Weight: 28.5 kDa

Concentration: N/A

Appearance: Lyophilized protein

Physical form description: Sterile filtered and lyophilized with no additives

Reconstitution Instructions: Reconstitution in 10 mM acetic acid to a concentration of 0.1-1.0 mg/ml. This solution can then be diluted into other aqueous buffers and stored at 4°C for 1 week or –20°C for future use.

Amino acid sequence: N/A