Candidate GTs for enzymatic synthesis (2 of 12 possible linkages):
WegG:
E. coli
O115
WekO:
E. coli
O1a
WegR:
E. coli
O2
WbdS:
E. coli
O53
WbuV:
E. coli
O149
Orf2:
E. coli
O23