Candidate GTs for enzymatic synthesis (2 of 3 possible linkages):

WbnI / WbwI: E. coli O86:K62:H2, E. coli O86 WclF: E. coli O155

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