HAV P3C

Hepatitis A Virus P3C Recombinant
Cat. No.
BT8515
Source
Escherichia Coli.
Synonyms
Appearance
Purity
HAV P3C protein is >90% 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.
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Description

The E.Coli derived 40 kDa recombinant protein contains the P3C immunodominant regions, amino acids 1643-1743.

Product Specs

Introduction
Forty-two antigenic domains of the hepatitis A virus (HAV) polyprotein were identified using 237 overlapping synthetic peptides (20-mers) that spanned the entire HAV polyprotein. Nineteen antigenic domains were located within the structural proteins, and 22 were found within the nonstructural proteins. One domain spanned the junction of the VP1 and P2A proteins. Five domains were classified as immunodominant based on their breadth and strength of immunoreactivity. One domain is located within the VP2 protein at amino acid positions 57-90. A second domain, located at positions 767-842, contains the C-terminal region of the VP1 protein and the complete P2A protein. A third domain, located at positions 1403-1456, includes the C-terminal portion of the P2C protein and the N-terminal half of the P3A protein. The fourth domain, located at positions 1500-1519, encompasses almost the entire P3B protein. The final domain, located at positions 1719-1764, contains the C-terminal region of the P3C protein and the N-terminal region of the P3D protein. Notably, four of the five most immunoreactive domains originate from small HAV proteins and/or span protein cleavage sites between different HAV proteins.
Description
This recombinant protein is derived from E. coli and has a molecular weight of 40 kDa. It contains the immunodominant regions of the HAV P3C protein, specifically amino acids 1643-1743.
Purity
The purity of the HAV P3C protein is greater than 90%, as determined by 10% SDS-PAGE and Coomassie blue staining.
Formulation
The HAV P3C protein is supplied in a buffer consisting of 10mM CBB (Coomassie Brilliant Blue), pH 9.6, 0.1% SDS (sodium dodecyl sulfate), and 50% glycerol.
Stability
The HAV P3C protein is stable at 4°C for 1 week. However, for long-term storage, it is recommended to store the protein below -18°C. Avoid repeated freeze-thaw cycles.
Applications
The HAV P3C antigen is suitable for use in enzyme-linked immunosorbent assays (ELISA) and Western blots. It serves as an excellent antigen for the detection of HAV with minimal specificity issues.
Source
Escherichia Coli.
Purification Method
HAV P3C protein was purified by proprietary chromatographic technique.
Specificity
Immunoreactive with sera HAV-infected individuals.

Product Science Overview

Introduction

Hepatitis A virus (HAV) is a member of the Picornaviridae family and is responsible for causing acute hepatitis in humans. The virus has a positive-sense single-stranded RNA genome of approximately 7.5 kb, encapsidated in a protein shell composed of viral proteins VP1, VP2, and VP3 . The P3C protein, also known as 3C protease, plays a crucial role in the viral life cycle by processing the viral polyprotein and interacting with host cell proteins .

Structure and Function of P3C

The P3C protease is a cysteine protease that cleaves the viral polyprotein at specific sites to generate functional viral proteins. This protease is essential for the maturation of the viral particles and the replication of the virus . In addition to its role in polyprotein processing, P3C protease also interacts with host cell proteins to modulate the host’s antiviral response, transcription, and translation processes .

Recombinant P3C Protein

Recombinant P3C protein refers to the P3C protease that has been produced using recombinant DNA technology. This involves cloning the gene encoding the P3C protease into an expression vector, which is then introduced into a host cell (such as E. coli) to produce the protein in large quantities. Recombinant P3C protein is used in various research applications, including studies on viral replication, protein-protein interactions, and the development of antiviral drugs.

Applications in Research
  1. Viral Replication Studies: Recombinant P3C protein is used to study the mechanisms of HAV replication and the role of P3C protease in the viral life cycle. By understanding how P3C protease processes the viral polyprotein, researchers can identify potential targets for antiviral drugs .
  2. Protein-Protein Interactions: The interaction of P3C protease with host cell proteins is crucial for the virus to evade the host’s immune response. Recombinant P3C protein is used to identify and characterize these interactions, providing insights into the virus-host relationship .
  3. Antiviral Drug Development: Inhibitors of P3C protease are potential candidates for antiviral drugs. Recombinant P3C protein is used in high-throughput screening assays to identify compounds that can inhibit the protease activity, thereby blocking viral replication .

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