HCV NS3 Genotype-1b

Hepatitis C Virus NS3 Genotype-1b Recombinant
Cat. No.
BT14037
Source
Synonyms
Appearance
Purity
HCV NS3 Genotype-1b protein is >95% pure as determined by 10% PAGE (coomassie staining).
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

The E.coli derived 26.2 kDa recombinant protein contains the HCV NS3 c33c immunodominant regions. The 252 amino acid protein is fused to 6xHis tag.

Product Specs

Introduction
Hepatitis C virus (HCV) is a small (50nm), enveloped, positive-sense, single-stranded RNA virus belonging to the Flaviviridae family. It exhibits a high replication rate, producing approximately one trillion viral particles daily in an infected individual. The HCV RNA polymerase lacks proofreading ability, resulting in a high mutation rate that contributes to its ability to evade the host's immune response. HCV is classified into six genotypes (1-6), each with multiple subtypes. The prevalence and distribution of HCV genotypes vary globally. Genotype determination is clinically significant as it influences the potential response to interferon-based therapy and the required treatment duration. Genotypes 1 and 4 demonstrate lower responsiveness to interferon-based treatment compared to genotypes 2, 3, 5, and 6.
Description
The recombinant HCV NS3 protein, derived from E. coli, has a molecular weight of 26.2 kDa and encompasses the HCV NS3 c33c immunodominant regions. This 252-amino acid protein is fused with a 6xHis tag.
Purity
The purity of the HCV NS3 Genotype-1b protein exceeds 95%, as determined by 10% PAGE (coomassie staining).
Formulation
The protein is supplied in a buffer containing 50mM NaPO4 (pH 8.3) and 10mM DTT.
Stability
For optimal stability, HCV NS3 Genotype-1b should be stored below -18°C. While it remains stable at 4°C for up to one week, repeated freeze-thaw cycles should be avoided.
Applications
The HCV NS3 Genotype-1b antigen is suitable for various applications, including ELISA and Western blots. It serves as an excellent antigen for HCV detection with minimal specificity issues.
Amino Acid Sequence

Starts: MRDSDSQTFQ 
Ends: DSVIDCNTCVT.

Purification Method
Purified by proprietary chromatographic technique.
Specificity
Immunoreactive with sera of HCV-infected individuals.

Product Science Overview

Introduction

Hepatitis C Virus (HCV) is a significant global health concern, affecting millions of people worldwide. It is a small, enveloped virus with a positive-sense, single-stranded RNA genome. The virus encodes a large polyprotein that is processed into structural and non-structural proteins. Among these, the non-structural protein 3 (NS3) plays a crucial role in the virus’s life cycle and is a target for therapeutic interventions.

HCV Genotype-1b

HCV is classified into several genotypes, with genotype 1 being the most prevalent and difficult to treat. Genotype 1b, in particular, is associated with a higher risk of developing liver cirrhosis and hepatocellular carcinoma. The NS3 protein of HCV genotype 1b is of significant interest due to its role in viral replication and its potential as a target for antiviral drugs.

NS3 Protein

The NS3 protein is a multifunctional enzyme with serine protease and RNA helicase activities. It is involved in the cleavage of the HCV polyprotein into functional units, which is essential for viral replication. The NS3 protein also interacts with host cell factors to modulate the immune response and promote viral persistence.

Recombinant NS3 Protein

Recombinant NS3 proteins are produced using various expression systems to study their structure, function, and interactions with other viral and host proteins. These recombinant proteins are also used in the development of diagnostic assays and vaccines. For instance, the full-length recombinant NS3 of HCV genotype 1b has been expressed in different systems, including E. coli and mammalian cells, to facilitate research and therapeutic development .

Applications
  1. Diagnostics: Recombinant NS3 proteins are used in enzyme-linked immunosorbent assays (ELISA) and Western blot assays to detect HCV infection. These assays are highly specific and can differentiate between various HCV genotypes.
  2. Therapeutics: The NS3 protein is a target for direct-acting antiviral agents (DAAs). Inhibitors of the NS3 protease have been developed and are used in combination with other DAAs to achieve sustained virologic response in HCV-infected patients.
  3. Vaccines: Research is ongoing to develop vaccines that elicit robust immune responses against HCV. Recombinant NS3 proteins are being explored as potential vaccine candidates due to their immunogenic properties.

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