Candidate GTs for enzymatic synthesis (3 of 7 possible linkages):
| ktr4p: S. cerevisiae S288c |
| gnt1p: S. cerevisiae SEY6210 |
| WbaD: E. coli O77:K96, E. coli O77, E. coli O17, E. coli O44, E. coli O73 Orf7: E. coli O6a WclC: E. coli O59 WfaV: E. coli O68 WfaA: E. coli O66 |