HCV E2

Hepatitis C Virus E2 Recombinant
Cat. No.
BT12698
Source
Escherichia Coli.
Synonyms
Appearance
Sterile Filtered colorless solution.
Purity
Greater than 80.0% 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

Recombinant Hepatitis C Virus E2 Genotype-1 produced in E. coli is a single polypeptide chain containing 226 amino acids (aa 482-671) and having a molecular mass of 25.4kDa (NCBI Accession#NP_671491).
HCV E2 is fused to a 36 amino acid His-tag at N-terminus.

Product Specs

Introduction
The E1 and E2 glycoproteins of Hepatitis C Virus (HCV) form a heterodimer crucial for viral entry into host cells. This complex facilitates attachment, internalization via clathrin-dependent endocytosis, and fusion with the host cell membrane. While the E1/E2 heterodimer binds to human receptors LDLR, CD81, and SCARB1/SR-BI, this interaction alone is insufficient for infection, suggesting the necessity of additional liver-specific cofactors. Notably, E1 might be responsible for the fusion function, while E2 inhibits human EIF2AK2/PKR activation, thereby hindering the establishment of an antiviral state within the host. Furthermore, E2 serves as a viral ligand for CD209/DC-SIGN and CLEC4M/DC-SIGNR, found on dendritic cells and liver sinusoidal endothelial cells/macrophage-like cells of lymph node sinuses, respectively. These interactions enable the capture of circulating HCV particles by these cells, promoting their dissemination to susceptible cells.
Description
Recombinant Hepatitis C Virus E2 Genotype-1, expressed in E. coli, is a single polypeptide chain encompassing amino acids 482-671 (NCBI Accession#NP_671491) and exhibiting a molecular weight of 25.4kDa. This protein comprises 226 amino acids and features a 36 amino acid His-tag fused to its N-terminus.
Physical Appearance
A clear, colorless solution devoid of particulate matter.
Formulation
The HCV E2 solution is provided at a concentration of 0.25mg/ml in a buffer consisting of 20mM Tris-HCl (pH 8.0), 0.4M Urea, and 10% glycerol.
Stability
For short-term storage (up to 2-4 weeks), the solution can be stored at 4°C. For extended storage, it is recommended to freeze the solution at -20°C. The addition of a carrier protein such as HSA or BSA (0.1%) is advised for long-term storage. Repeated freeze-thaw cycles should be avoided.
Purity
The purity of the HCV E2 protein is determined to be greater than 80.0% using SDS-PAGE analysis.
Source
Escherichia Coli.
Amino Acid Sequence
MRGSHHHHHH GMASMTGGQQ MGRDLYDDDD KDRWGSERPY CWHYPPRPCG IVPAKSVCGP VYCFTPSPVV VGTTDRSGAP TYSWGANDTD VFVLNNTRPP LGNWFGCTWM NSTGFTKVCG APPCVIGGVG NNTLLCPTDC FRKHPEATYS RCGSGPWITP RCMVDYPYRL WHYPCTINYT IFKVRMYVGG VEHRLEAACN WTRGERCDLE DRDRSELSPL LLSTTQ.

Product Science Overview

Introduction

Hepatitis C virus (HCV) is a significant global health concern, infecting approximately 71 million people worldwide as of 2015 . It is a leading cause of liver cirrhosis and hepatocellular carcinoma, posing serious health risks and increasing the burden on healthcare systems.

Structure of HCV

HCV belongs to the Flaviviridae family and has a single-stranded positive-sense RNA genome. This genome encodes a single polyprotein, which is processed into at least 11 polypeptides, including three structural proteins (core, and envelope proteins E1 and E2), a small polypeptide named p7, the novel F protein, and six nonstructural (NS) proteins (NS2, NS3, NS4A, NS4B, NS5A, and NS5B) .

Importance of E2 Glycoprotein

The E2 glycoprotein is one of the key structural proteins of HCV and plays a crucial role in the virus’s ability to infect host cells. It is the major target for neutralizing antibodies (NAbs), making it a critical focus for vaccine development . The E2 protein forms heterodimers with the E1 protein on the viral surface, facilitating the virus’s entry into host cells .

Recombinant E2 Protein

Recombinant E2 protein is produced using genetic engineering techniques to express the E2 glycoprotein in various host systems. This recombinant protein is used in research to study the immune response to HCV and to develop vaccines and therapeutic agents. The recombinant E2 protein can elicit broad neutralizing antibodies, making it a promising candidate for vaccine development .

Vaccine Development

Developing an effective HCV vaccine is challenging due to the high diversity across HCV genotypes. However, recombinant E2 proteins have shown potential in eliciting pangenotypic neutralizing antibodies, which can target multiple HCV genotypes . Recent studies have focused on optimizing the E2 protein to enhance its immunogenicity and efficacy in vaccine formulations .

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