Candidate GTs for enzymatic synthesis (3 of 2 possible linkages):
81A1:
A. thaliana
GALS1:
A. thaliana
WclN:
E. coli
O21
WfeB:
E. coli
O32
Orf4:
E. coli
O83
WclY / WbeC:
E. coli
O117