Candidate GTs for enzymatic synthesis (3 of 6 possible linkages):
Gtr22: A. baumannii ABNIH2, D1279779, LUH3484, MDR_TJ, OIFC098
Gtr21: A. baumannii ABNIH2, D1279779, LUH3484, MDR_TJ, OIFC098
Gtr31K12: A. baumannii D36
Gtr31K13: A. baumannii UMB001
Gtr31K73: A. baumannii SGH 0703
Gtr31K125: A. baumannii MAR13-1452