Candidate GTs for enzymatic synthesis (2 of 5 possible linkages):

WfeD: E. coli O32 Orf6: E. coli O83 Orf9: E. coli O136 WbsG: E. coli O91

Orf11: E. coli O41 Orf12: E. coli O84 Orf13: E. coli O156 WfgS: E. coli O159 WfeY: E. coli O168