HBsAg G145R

HBsAg G145R

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  • HBsAg G145R

  • Hepatitis B Surface Antigen G145R Recombinant
  • HBS-873
  • Shipped with Ice Packs

Catalogue number



Recombinant HBsAg G145R expressed from Hansenula polymorpha and is purified by proprietary chromatographic techniques.

Physical Appearance

Sterile Filtered clear solution.


10mM NaH2PO4, pH 7.2 & 0.03 % Tween-20.


HBsAg G145R should be stored at 4°C, DO NOT FREEZE.


Greater than 95.0% as determined SDS-PAGE.

Safety Data Sheet


ProSpec'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.


The surface antigen of the virus, HBsAg, is a crucial marker for both infection diagnosis and vaccination efficacy. However, the emergence of HBsAg mutant proteins, characterized by specific variations in the viral genome, poses a substantial challenge to accurate diagnostics, treatment, and prevention strategies. This research delves into the realm of HBsAg mutant proteins, exploring their genetic diversity, clinical relevance, and impact on disease management.

Genetic Diversity of HBsAg Mutants:

HBsAg mutants are HBV variants that exhibit specific amino acid substitutions within the major hydrophilic region (MHR) of the HBsAg protein. These mutations can arise due to the selective pressure from the host immune response or antiviral therapies. Understanding the genetic diversity of these mutants is essential for tracking the evolution of HBV and developing effective diagnostic assays and vaccines.

Clinical Relevance and Diagnostic Challenges:

HBsAg mutants present significant challenges in clinical diagnosis. Traditional HBsAg assays may fail to detect these mutants, leading to false-negative results. This diagnostic hurdle can delay appropriate medical interventions and affect disease management. Furthermore, individuals infected with HBsAg mutants might have altered disease progression, complicating the prediction of disease outcomes and treatment responses.

Implications for Vaccination Programs:

The emergence of HBsAg mutants also raises concerns regarding the effectiveness of vaccination programs. Mutations within the HBsAg protein might result in vaccine escape variants, reducing the efficacy of existing vaccines. This scenario necessitates continuous surveillance and the development of next-generation vaccines that target a broader spectrum of HBV mutants. Understanding the interplay between viral evolution and vaccine-induced immunity is crucial for ensuring the long-term success of vaccination strategies.

Therapeutic Challenges and Future Prospects:

In the context of antiviral therapies, HBsAg mutants can pose challenges in treatment efficacy. These mutants might exhibit resistance to certain antiviral drugs, impacting the choice of therapeutic regimens. Research efforts are underway to identify novel drug targets and develop antiviral agents that can effectively combat HBsAg mutants. Additionally, advancements in gene therapy and immunomodulatory approaches hold promise for future therapeutic interventions.


The study of HBsAg mutant proteins represents a vital area of research in the field of virology and hepatology. Understanding the genetic diversity, clinical implications, and therapeutic challenges associated with these mutants is essential for devising comprehensive strategies for HBV diagnosis, prevention, and treatment. As we delve deeper into the complexities of HBsAg variants, we pave the way for more accurate diagnostics, effective vaccines, and targeted therapies, ultimately contributing to the global efforts to combat hepatitis B and its associated complications.


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