Candidate GTs for enzymatic synthesis (2 of 4 possible linkages):

WfeD: E. coli O32 Orf6: E. coli O83 Orf9: E. coli O136 WbsG: E. coli O91

Gtr58: A. baumannii NIPH 70, 4190, 1432 Gtr153: A. baumannii LUH5534