1) WbpL, a bifunctional glycosyltransferase, is required for the initiation of both LPS and O antigen synthesis. 2) WbpL involved in the initiation of the assembly of individual O?antigen units by the transfer of FucNAc from UDP?FucNAc to undecaprenol phosphate.
Additional Information
1) Expression of O-antigen biosynthesis cluster of Escherichia coli O157:H7 in strain P. aeruginosa 1244 resulted in the production of pilin that contained both the endogenous Pseudomonas as well as the Escherichia O157 O-antigens.