Escherichia coli K-12 substr. MG1655 Gene-Ontology-Terms Class: GO:0009243 - O antigen biosynthetic process

Synonyms: O antigen anabolism, O antigen biosynthesis, O antigen formation, O antigen synthesis

Definition: The chemical reactions and pathways resulting in the formation of the O side chain of a lipopolysaccharide, which determines the antigenic specificity of the organism. It is made up of about 50 repeating units of a branched tetrasaccharide.

Parent Classes:
GO:0033692 - cellular polysaccharide biosynthetic process,
GO:0046402 - O antigen metabolic process

Part Of:
GO:0009103 - lipopolysaccharide biosynthetic process

Term Members:
O-antigen flippase (rfbX),
β-1,6-galactofuranosyltransferase (wbbI),
UDP-galactopyranose mutase (glf),
dTDP-glucose pyrophosphorylase 2 (rffH),
dTDP-glucose 4,6-dehydratase (rfbB),
dTDP-4-dehydrorhamnose reductase (rfbD),
dTDP-4-dehydrorhamnose 3,5-epimerase (rfbC)

Unification Links: GO:0009243

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Please cite the following article in publications resulting from the use of EcoCyc: Nucleic Acids Research 41:D605-12 2013
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