Candidate GTs for enzymatic synthesis (5 of 5 possible linkages):
ktr4p: S. cerevisiae S288c
gma12p: S. pombe W303-1A, SSY18
WcaO: E. coli O9a:K30
Orf8: E. coli O39
WbdA / MtfA: E. coli O9a CWG634, E. coli O9 F719
WbaX: E. coli O183