Candidate GTs for enzymatic synthesis (4 of 6 possible linkages):
| WfgE: E. coli O152 WcmX: E. coli O173 WfaO: E. coli O24 |
| WaaR/WaaJ: E. coli K12 |
| WfaR: E. coli O56 WfaN: E. coli O24 |
| WclQ: E. coli O21 WfaM: E. coli O24 WejU: E. coli O27 Orf9: E. coli O81 WffJ: E. coli O130 |