Mechanistic and Structural Analysis of Aminoglycoside N -Acetyltransferase AAC(6′)-Ib and Its Bifunctional, Fluoroquinolone-Active AAC(6′)-Ib-cr Variant † ‡

Mechanistic and Structural Analysis of Aminoglycoside N -Acetyltransferase AAC(6′)-Ib and Its Bifunctional, Fluoroquinolone-Active AAC(6′)-Ib-cr Variant † ‡