Candidate GTs for enzymatic synthesis (2 of 8 possible linkages):
WzY: E. coli O7:K1 VW187
Gtr50K45: A. baumannii NIPH 201
Gtr50K43: A. baumannii NIPH 60, O15, LUH5544
Gtr50K47: A. baumannii NIPH 601