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Parainfluenza hemagglutinin-neuraminidase: a type of hemagglutinin-neuraminidase produced by parainfluenza, which is closely associated with both human and veterinary disease. [17] Mumps hemagglutinin-neuraminidase: a kind of hemagglutinin that the mumps virus (MuV) produces. [18] Hemagglutinin: the PH-E form of phytohaemagglutinin.
Influenza hemagglutinin (HA) or haemagglutinin [p] (British English) is a homotrimeric glycoprotein found on the surface of influenza viruses and is integral to its infectivity. Hemagglutinin is a class I fusion protein , [ 1 ] [ 2 ] having multifunctional activity as both an attachment factor and membrane fusion protein .
The structure of the influenza virus neuraminidase. [2] Structure of Influenza, showing neuraminidase marked as NA and hemagglutinin as HA Influenza virus replication, showing how in step 6 the neuraminidase and hemagglutinin proteins incorporated into the host cell's membrane are used to escape.
Hemagglutinin-neuraminidase refers to a single viral protein that has both hemagglutinin and (endo) neuraminidase EC 3.2.1.18 activity. This is in contrast to the proteins found in influenza, where both functions exist but in two separate proteins.
Kawaoka and his colleagues combined the H5 hemagglutinin gene from the bird flu virus with genes from the 2009 H1N1 swine flu virus. Then they coaxed their hybrid to evolve in a way that allowed ...
The HA-tag is a protein tag derived from the human influenza hemagglutinin (HA) protein, which allows the virus to target and enter host cells. An HA-tag is composed of a peptide derived from the HA-molecule corresponding to amino acids 98-106, which can be recognized and selectively bound by commercially available antibodies .
Based on their serotype, there are 18 known types of hemagglutinin and 11 types of neuraminidase. [22] [23] Subtypes of IAV are classified by their combination of H and N proteins. For example, "H5N1" designates an influenza A subtype that has a type-5 hemagglutinin (H) protein and a type-1 neuraminidase (N) protein. [22]
Blood type can be determined by using antibodies that bind to the A or B blood group antigens in a sample of blood.. For example, if antibodies that bind the A blood group are added and agglutination occurs, the blood is either type A or type AB.