Candidate GTs for enzymatic synthesis (4 of 5 possible linkages):
| WbwA: E. coli O104 |
| 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 |
| WfeV: E. coli O168 |