About Influenza A Virus Hemagglutinin (HA) Trimer Recombinant Protein (A/Puerto Rico/8/1934, H1N1)

Influenza A virus is an enveloped, negative-sense segmented RNA virus belonging to the family Orthomyxoviridae. Hemagglutinin (HA) is the major viral surface glycoprotein and forms a homotrimer on the viral envelope. HA mediates viral attachment by binding sialic acid-containing receptors on host cells and subsequently undergoes conformational changes that drive membrane fusion and viral entry. Because HA is the principal target of neutralizing antibodies and the primary protective antigen, it has become the most extensively studied influenza antigen for vaccine development and immunological research. The A/Puerto Rico/8/1934 (PR8, H1N1) strain is a classical laboratory strain that has been widely used in influenza research and vaccine production.

eEnzyme's Influenza A/Puerto Rico/8/1934 (H1N1) HA Trimer Recombinant Protein is produced for research use and is suitable for antibody screening, receptor-binding studies, ELISA development, Western blotting, epitope mapping, structural characterization, and influenza vaccine research. This recombinant protein provides a valuable reagent for investigating influenza virus biology, host immune responses, and antiviral therapeutic development.

Applications

Biological Significance of Influenza HA Trimer

The influenza HA trimer is the functional viral attachment and fusion protein responsible for initiating infection. By recognizing sialic acid receptors on host cells, HA triggers viral entry and serves as the dominant target of protective antibody responses. Because of its native trimeric structure and biological relevance, the Influenza A/Puerto Rico/8/1934 (H1N1) HA Trimer Recombinant Protein is a valuable research tool for studies of influenza pathogenesis, vaccine design, therapeutic antibody discovery, and virus-host interactions.