Candidate GTs for enzymatic synthesis (1 of 4 possible linkages):

WclY / WbeC: E. coli O117 W30, E. coli O117 Orf6: E. coli O82 WfeR: E. coli O124 Orf4: E. coli O23 WfeK: E. coli O112ac WbeC: E. coli O117