HCV Core 1-120

Hepatitis C Virus Nucleocapsid (core) 1-120 a.a. Recombinant
Cat. No.
BT10876
Source
Escherichia Coli.
Synonyms
Appearance
Sterile filtered colorless solution.
Purity
Greater than 85% 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 HCV Core 1-120 produced in E. coli is a single polypeptide chain containing 140 amino acids (aa 1-120) and having a molecular mass of 15.7kDa.
Recombinant HCV Core 1-120 is fused to a 20 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Product Specs

Introduction
Hepatitis C virus (HCV) is a small, enveloped virus measuring approximately 50nm in diameter. It belongs to the Flaviviridae family and is characterized by its positive-sense, single-stranded RNA genome. HCV exhibits a high replication rate, producing about one trillion viral particles daily in an infected individual. The absence of proofreading mechanisms in the HCV RNA polymerase results in a remarkably high mutation rate, enabling the virus to evade the host's immune system effectively. Based on genetic variations, HCV is categorized into six genotypes (1-6), with each genotype further divided into multiple subtypes. The prevalence and geographical distribution of HCV genotypes vary globally. Genotyping plays a crucial role in clinical practice as it helps determine the most appropriate treatment strategy for hepatitis C, particularly the potential response to interferon-based therapy and the required duration of treatment. Notably, genotypes 1 and 4 show a lower response rate to interferon-based treatments compared to genotypes 2, 3, 5, and 6.
Description
The recombinant HCV Core 1-120 protein, expressed in E. coli, is a single polypeptide chain consisting of 140 amino acids (spanning amino acid positions 1 to 120). With a molecular weight of 15.7 kDa, this protein represents a truncated form of the HCV Core protein. It is engineered to include a 20 amino acid His-tag at its N-terminus, facilitating purification by proprietary chromatographic techniques.
Physical Appearance
The product appears as a clear, colorless solution that has been sterilized by filtration.
Formulation
The HCV Core protein solution is provided at a concentration of 0.5mg/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 HCV Core protein should be kept at 4°C. For extended storage, it is recommended to freeze the protein at -20°C. To enhance stability during long-term storage, the addition of a carrier protein such as HSA or BSA to a final concentration of 0.1% is advised. Repeated freezing and thawing of the protein should be avoided to maintain its integrity.
Purity
The purity of the HCV Core 1-120 protein is greater than 85%, as determined by SDS-PAGE analysis.
Source
Escherichia Coli.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MSTNPKPQRK TKRNTNRRPQ DVKFPGGGQI VGGVYLLPRR GPRLGVRATR KTSERSQPRG RRQPIPKARR PEGRTWAQPG YPWPLYGNEG CGWAGWLLSP RGSRPSWGPT DPRRRSRNLG.

Product Science Overview

Introduction

Hepatitis C Virus (HCV) is a significant global health concern, affecting nearly 3% of the world’s population. It is a major cause of chronic hepatitis, cirrhosis, and hepatocellular carcinoma. The virus was first identified in 1989 and belongs to the Flaviviridae family. HCV is an enveloped single-stranded RNA virus with a genome of approximately 9.6 kb, flanked by untranslated regions (UTRs) at its 5’ and 3’ ends .

Structure and Function of HCV Core Protein

The HCV core protein is the first protein translated from the HCV genome and plays a crucial role in forming the viral nucleocapsid. The mature core protein is a 21-kDa protein that binds to the host-derived lipid membrane and HCV RNA . The core protein consists of the first 191 amino acids of the HCV polyprotein and can be divided into three domains based on hydrophobicity . Domain 1 (amino acids 1-117) contains mainly basic residues with two short hydrophobic regions .

Recombinant HCV Core Protein

Recombinant HCV core proteins, particularly the N-terminal 120 amino acids, have been extensively studied for their ability to self-assemble into nucleocapsid-like particles. These particles exhibit a regular, spherical morphology with a diameter of approximately 60 nm . The self-assembly process requires structured RNA molecules, and the inclusion of the carboxy-terminal domain of the core protein can modify the assembly pathway .

Applications and Research

The study of recombinant HCV core proteins provides valuable insights into the protein-protein and protein-RNA interactions critical for HCV assembly. These insights are essential for understanding the molecular details of HCV assembly and for developing high-throughput screening methods for assembly inhibitors . Additionally, the recombinant core protein’s ability to self-assemble into nucleocapsid-like particles offers novel opportunities for vaccine development and therapeutic interventions.

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