Binding of the influenza virion to the host cell

Stable Identifier
R-HSA-168272
Type
Reaction [binding]
Species
Homo sapiens
Related Species
Influenza A virus
Compartment
Locations in the PathwayBrowser
General
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Influenza viruses bind via their surface HA (hemagglutinin) to sialic acid in alpha 2,3 or alpha 2,6 linkage with galactose on the host cell surface. Sialic acid in 2,6 linkages is characteristic of human cells while 2,3 linkages are characteristic of avian cells. The specificity of influenza HA for sialic acid in alpha 2,6 or alpha 2,3 linkages is a feature restricting the transfer of influenza viruses between avian species and humans. This species barrier can be overcome, however. Notably, passaged viruses adapt to their host through mutation in the receptor binding site of the viral HA gene.

Literature References
PubMed ID Title Journal Year
0 Orthomyxoviridae: The Viruses and Their Replication

Palese, P, Shaw, ML

Fields Virology, 5th edition D.M. Knipe and P.M. Howley, Editors. 2006, Lippencott Williams and Wilkins: Philadelphia ISBN-10: 0-7817-6060-7 2001
Participants
Participant Of
Event Information
Disease
Name Identifier Synonyms
influenza 8469 Influenza with other manifestations (disorder), Influenza with other manifestations NOS (disorder), flu, Influenza with other manifestations, Influenza with non-respiratory manifestation (disorder), influenza with non-respiratory manifestation
Created
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