HCV NS3 Genotype-3

Hepatitis C Virus NS3 Genotype-3, (1356-1459 a.a.) Recombinant
Cat. No.
BT14407
Source
Synonyms
Appearance
Purity
HCV NS3 Genotype-3 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 recombinant protein contains the HCV NS3 immunodominant regions, amino acids 1359-1456. The protein is fused to a GST tag at N-Terminus.

Product Specs

Introduction
Hepatitis C virus (HCV) is a small (50nm), enveloped, single-stranded, positive-sense RNA virus belonging to the Flaviviridae family. It exhibits a high replication rate, producing approximately one trillion particles daily in infected individuals. The lack of proofreading mechanisms in the HCV RNA polymerase results in a high mutation rate, enabling the virus to evade the host's immune response. HCV is categorized into six genotypes (1-6), each with multiple subtypes, with their prevalence varying globally. Genotype determination is crucial for treatment decisions, as it influences the response to interferon-based therapies. Genotypes 1 and 4 show lower responsiveness compared to genotypes 2, 3, 5, and 6.
Description
This recombinant protein, derived from E. coli, encompasses the HCV NS3 immunodominant regions, specifically amino acids 1359-1456. It is fused with a GST tag at the N-terminus.
Purity
The purity of HCV NS3 Genotype-3 protein exceeds 95%, as determined by 10% SDS-PAGE and Coomassie blue staining.
Formulation
The protein is supplied in a buffer consisting of 1.5M urea, 25mM Tris-HCl (pH 8), 0.2% Triton-X, and 50% glycerol.
Stability
HCV NS3 Genotype-3 remains stable at 4°C for one week. However, for long-term storage, it is recommended to store the protein below -18°C. Avoid repeated freeze-thaw cycles.
Applications
HCV NS3 Genotype-3 antigen is suitable for use in various immunological assays, including ELISA and Western blotting. Its high specificity makes it an excellent antigen for the detection of HCV.
Purification Method
HCV NS3 Genotype-3 protein was 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, infecting millions of people worldwide. Among the various genotypes of HCV, genotype 3 is particularly prevalent and poses unique challenges in terms of treatment and management. The non-structural protein 3 (NS3) of HCV plays a crucial role in the virus’s life cycle, including replication and pathogenesis. The recombinant form of NS3, specifically the amino acid sequence 1356-1459, has been extensively studied for its potential in diagnostic and therapeutic applications.

Preparation Methods

The preparation of recombinant NS3 protein involves several key steps. Initially, the gene encoding the NS3 protein is amplified using polymerase chain reaction (PCR) techniques. The amplified gene is then cloned into a suitable expression vector, such as pET-32a, which is subsequently introduced into a bacterial host, typically Escherichia coli (E. coli) BL21ply* . The bacterial cells are cultured under optimal conditions to express the recombinant protein. Following expression, the protein is purified using affinity chromatography methods, such as Nickel-affinity chromatography, to achieve high purity levels . The purity and expression levels are confirmed through techniques like western blotting and CD spectroscopy .

Chemical Reactions Analysis

The NS3 protein of HCV exhibits protease and helicase activities, which are essential for viral replication. The protease activity involves the cleavage of the viral polyprotein into functional units, while the helicase activity is responsible for unwinding the viral RNA . The recombinant NS3 protein retains these enzymatic activities, making it a valuable tool for studying the virus’s life cycle and for screening potential antiviral drugs. Molecular dynamics simulations and structural analyses have been employed to understand the active sites of the NS3 protease and its interactions with various inhibitors . These studies have provided insights into the protein’s catalytic mechanisms and have facilitated the design of more effective antiviral therapies .

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