The Pathway to Gentamicin X2
The roles revealed in this study of GenD2, GenS2, GenN, and GenD1 are highlighted in orange. Shunt products of GenK are shown in blue. For details, see the text. A2 (3): gentamicin A2; DOA2 (8): 3″-dehydro-3″-oxo-gentamicin A2; DAA2 (9): 3″-dehydro-3″-amino-gentamicin A2; X2 (4): gentamicin X2; A2e (7): 6′-methylgentamicin A2; Ae (6): 6′-methylgentamicin A. Carbon numbering is shown with the structure of 3.