3NU7 WBPE, AN AMINOTRANSFERASE FROM PSEUDOMONAS AERUGINOSA INVOLVED IN O- ANTIGEN ASSEMBLY IN COMPLEX WITH THE COFACTOR PMP TRANSFERASE, DOMAIN-SWAPPED BETA HAIRPIN, AMINOTRANSFERASE, PLP, PMP, UDP- GLCNAC(3NH2)A, LIPOPOLYSACCHARIDE, O-ANTIGEN, B-BAND