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Target intelligence / Profile preview
Influenza Virus Hemagglutinin Protein H1N1 Subtype A Strain Antigen (HA H1N1)
- Target
- HA H1N1
- Molecular classification
- Glycoprotein, Viral protein, Surface antigen
01
Overview
The hemagglutinin (HA) protein is a major surface glycoprotein of the influenza A virus, including the H1N1 subtype. It plays a central role in viral infectivity and host immune recognition. HA is responsible for binding the virus to sialic acid-containing receptors on host cells and mediating fusion between the viral envelope and host cell membrane, enabling entry of the viral genome into the cytoplasm. It is a key target for neutralizing antibodies and influenza vaccines.
- Other names
- H1N1 HemagglutininHA protein H1N1H1 hemagglutinin
02
Mechanism of action
Neutralization of viral infectivity by blocking receptor binding or membrane fusion
03
Biological functions
Receptor bindingMembrane fusionViral entryAntigen presentationImmune response induction
04
Disease associations
InfectionInfluenzaViral pathogenesis
05
Safety considerations
Antigenic drift/shift leading to vaccine failurePotential for antibody-dependent enhancement (ADE) of infectionRisk of zoonotic transmission
06
Interacting drugs
Monoclonal antibodies (e.g., broadly neutralizing antibodies)
1 more in the full profile.
07
Biomarkers
Antibody titers against HA H1N1HA sequence variations (antigenic drift)
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