Candidate GTs for enzymatic synthesis (3 of 6 possible linkages):

WbbA: E. coli O7:K1 VW187 WbbB: E. coli O7 Orf9: E. coli O39

WcaO: E. coli O9a:K30 Orf8: E. coli O39

WzY: E. coli O7:K1 VW187