APOE3 Human

Apolipoprotein E3 Human Recombinant
Cat. No.
BT11681
Source
Escherichia Coli.
Synonyms
Apolipoprotein E, LDLCQ5, APO-E, LPG, AD2, Alzheimer Disease 2 (APOE*E4-Associated, Late Onset), Apolipoprotein E3, APOE.
Appearance

Sterile Filtered clear solution.

Purity
Greater than 95% as determined by SDS-PAGE.
Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

APOE3 Human Recombinant (19-317) produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 306 amino acids and having a molecular mass of 35.2kDa.

The APOE is fused to a Met and a 6 amino acid His tag [M-HHHHHH] at N-terminus and purified by proprietary chromatographic techniques.

Product Specs

Introduction
Apolipoprotein E3 (ApoE) is a protein that plays a crucial role in lipid metabolism, particularly in the transport and breakdown of fats. It is found in various particles that carry cholesterol and other fats in the bloodstream. ApoE interacts with specific receptors in the liver and brain to facilitate the uptake and processing of these fat-carrying particles. This protein is essential for maintaining healthy levels of fats in the body and plays a role in brain function, including memory. Variations in the ApoE gene can result in different forms of the protein, with ApoE2, ApoE3, and ApoE4 being the most common. These variations have been linked to different risks of developing conditions such as atherosclerosis (hardening of the arteries) and neurodegenerative diseases, especially Alzheimer's disease.
Description
This product consists of a specifically designed version of the human Apolipoprotein E3 protein. It is produced using a bacterial expression system (E. coli) and undergoes a purification process to ensure its quality and purity. The final product is a single chain of 306 amino acids, without any attached sugar molecules (non-glycosylated), and has a molecular weight of 35.2 kilodaltons (kDa). To aid in its purification and detection, a small tag consisting of a methionine and six histidine amino acids (M-HHHHHH) is added at the beginning of the protein sequence.
Physical Appearance
The product appears as a clear liquid that has been sterilized by filtration.
Formulation
This product is provided as a solution that has been sterilized through filtration. It is formulated in a buffer containing 10mM MOPS, 50mM NaCl, 0.2% (w/v) CHAPS, and 1mM TCEP, with a pH of 7.5.
Stability
To ensure product stability, store the vial at 4°C if it will be used within 2-4 weeks. For longer-term storage, freeze at -20°C. When storing for extended periods, consider adding a carrier protein like HSA or BSA (0.1%). Avoid repeated freezing and thawing.
Purity
The purity of this product is greater than 95%, as assessed by SDS-PAGE, a technique used to separate and analyze proteins.
Biological Activity
The recombinant human ApoE3 protein demonstrates the ability to bind to a specific receptor called rMuVLDLR. The binding affinity is characterized by an EC50 value, which falls within the range of 0.075-0.375 µg/ml, indicating strong binding interaction.
Synonyms
Apolipoprotein E, LDLCQ5, APO-E, LPG, AD2, Alzheimer Disease 2 (APOE*E4-Associated, Late Onset), Apolipoprotein E3, APOE.
Source
Escherichia Coli.
Amino Acid Sequence
MHHHHHHKVE QAVETEPEPE LRQQTEWQSG QRWELALGRF WDYLRWVQTL SEQVQEELLS SQVTQELRAL MDETMKELKA YKSELEEQLT PVAEETRARL SKELQAAQAR LGADMEDVCG RLVQYRGEVQ AMLGQSTEEL RVRLASHLRK LRKRLLRDAD DLQKRLAVYQ AGAREGAERG LSAIRERLGP LVEQGRVRAA TVGSLAGQPL QERAQAWGER LRARMEEMGS RTRDRLDEVK EQVAEVRAKL EEQAQQIRLQ AEAFQARLKS WFEPLVEDMQ RQWAGLVEKV QAAVGTSAAP VPSDNH.

Product Science Overview

Introduction

Apolipoprotein E3 (Human Recombinant) is a synthetic version of the naturally occurring Apolipoprotein E3, a protein that plays a crucial role in lipid metabolism and brain health. This recombinant protein is produced using advanced biotechnological methods, ensuring high purity and biological activity.

Structure and Function

Apolipoprotein E3 is a major component of several lipoproteins, including low-density lipoproteins (LDL), very low-density lipoproteins (VLDL), high-density lipoproteins (HDL), and chylomicrons . It is primarily produced by hepatocytes, macrophages, and non-neuronal cells in the central nervous system . The protein is involved in the transport of triglycerides and cholesterol to peripheral tissues for cellular uptake and catabolism .

Production

The recombinant form of Apolipoprotein E3 is typically produced in Escherichia coli or other expression systems such as Baculovirus-mediated expression in Spodoptera frugiperda cells . The production process involves the insertion of the human Apolipoprotein E3 gene into the host cells, which then express the protein. The recombinant protein is purified to achieve high purity levels, often exceeding 90% .

Biological Activity

Recombinant Apolipoprotein E3 retains the biological activity of the native protein. It is known to stimulate the proliferation of human SH-SY5Y cells and bind to lipoprotein receptors, facilitating lipid transport and metabolism . The protein’s ability to interact with various lipoprotein receptors makes it a valuable tool for studying lipid metabolism and related diseases.

Applications

Apolipoprotein E3 (Human Recombinant) is widely used in research to study lipid metabolism, cardiovascular diseases, and neurodegenerative disorders. Its role in lipid transport and receptor binding makes it a critical component in understanding the mechanisms underlying these conditions. Additionally, it is used in the development of therapeutic strategies for diseases such as Alzheimer’s disease, where lipid metabolism and transport are disrupted .

Storage and Handling

Recombinant Apolipoprotein E3 should be stored at -20°C to -80°C for long-term storage and at 2°C to 8°C for short-term use . It is recommended to reconstitute the protein in a buffer containing a carrier protein or stabilizer to maintain its stability and biological activity .

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