Candidate GTs for enzymatic synthesis (3 of 7 possible linkages):
ktr4p:
S. cerevisiae
S288c
Orf8:
E. coli
O182
Orf4:
E. coli
O170
WbsF:
E. coli
O91
Gtr43:
A. baumannii
A388
Orf5:
E. coli
O6a