2.4.1.309	malfunction	wbnI gene is replaced by a chloramphenicol acetyltransferase gene using the RED recombination system of phage lambda. Inactivated the wbnI gene shows that the mutant strain produces a different polysaccharide without the a-(1->3)-linked Galp side chain. The yield of the polysaccharide is substantially lower than the one produced by the wild-type strain	-, 721974	
2.4.1.309	physiological function	the enzyme is involved in the the biosynthesis of the O-polysaccharide repeating unit of Escherichia coli serotype O86	-, 723245