Description

Hepatitis B Virus Surface Antigen P31C is a critical recombinant protein antigen derived from the Hepatitis B virus (HBV) surface protein. This high-purity biological reagent is essential for the research, development, and quality control of diagnostic assays and vaccines targeting Hepatitis B. It is primarily utilized by biotechnology firms, diagnostic manufacturers, and research institutions engaged in virology, immunology, and infectious disease studies to ensure accurate detection and immunological response evaluation.

Application

• Immunoassay Development: As a key antigen for developing and calibrating ELISA, CLIA, and other serological diagnostic kits for Hepatitis B surface antigen (HBsAg) detection.
• Vaccine Research: Used in immunological studies to evaluate vaccine candidate efficacy and to study neutralizing antibody responses.
• Quality Control Reference: Serves as a critical reference standard and positive control in the quality assurance processes of diagnostic kit production.
• Antibody Specificity Testing: Employed to validate the specificity and sensitivity of monoclonal and polyclonal antibodies raised against HBsAg.
• Basic Virology Research: A vital tool for studying HBV structure, antigenicity, and host-pathogen interactions in a laboratory setting.
• Biomarker Discovery: Used in proteomic and immunoproteomic research to identify novel biomarkers associated with HBV infection.

Basic Information

Product Name	Hepatitis B Virus Surface Antigen P31C
CAS No.	121683-17-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	HBsAg P31C; Recombinant Hepatitis B Surface Antigen P31C; HBV Surface Antigen P31C; HBsAg Recombinant Protein; Hepatitis B Virus Major Surface Antigen; HBV S-Ag P31C; P31C Antigen; Hepatitis B Diagnostic Antigen
EINECS	Contact for details

Quality Control

Our Hepatitis B Virus Surface Antigen P31C is produced under stringent quality management systems. Each batch undergoes comprehensive analytical testing, including purity assessment by SDS-PAGE and HPLC, identity confirmation via Western Blot, and functional activity validation. Certificates of Analysis (COA) detailing lot-specific results are provided to ensure traceability and compliance with research-grade specifications.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below. This product is hygroscopic (moisture-sensitive). For long-term storage, aliquot to avoid repeated freeze-thaw cycles and store under recommended conditions.

Specification

Item	Specification
Appearance	White or off-white lyophilized powder
Identification (Western Blot)	Positive reaction with anti-HBsAg antibodies
Purity (SDS-PAGE)	≥ 90%
Protein Content (BCA)	≥ 95% of total weight
Biological Activity (ELISA)	Reactivity confirmed vs. reference standard
Endotoxin (LAL)	< 1.0 EU/μg
Solubility	Soluble in PBS or appropriate aqueous buffer

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.