Hemagglutinin
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The term hemagglutinin refers to any protein that can cause red blood cells to clump together in vitro. They do this by binding to the sugar residues on a red blood cell; when a single hemagglutinin m
Illustration showing influenza virus attaching to cell membrane via the surface protein hemagglutinin
Sialic acid
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Sialic acids are a class of alpha-keto acid sugars with a nine-carbon backbone. The term "sialic acid" was first introduced by Swedish biochemist Gunnar Blix in 1952. The most common member of this gr
Hemagglutinin
…discovering agglutination and hemagglutinin" in 1941. Alfred Gottschalk proved in 1957 that hemagglutinins bind a virus to a host cell by attaching to sialic acids on carbohydrate side chains of cell-membrane glycoproteins and glycolipids. In the viral families Paramyxoviridae and Orthomyxoviridae, viruses use a…
How the influenza virus gets into the cell by endocytosis