Candidate GTs for enzymatic synthesis (5 of 9 possible linkages):
WaaX: E. coli R4 F2513
WbwA: E. coli O104
WcnV: E. coli O165
Orf7: E. coli O82
WclP: E. coli O21
NeuS: E. coli K1, E. coli K92
WfeD: E. coli O32
Orf6: E. coli O83
Orf9: E. coli O136
WbsG: E. coli O91