butA MNESTRNWPEELLELLGQTELTVNKIGYSGDHVYHVKEYRGTPAFLKIAPSVWWRTLRPEIEALAWLDGKLPVPKILYTAEHGGMDYLLMEALGGKDGSHETIQAKRKLFVKLYAEGLRSVHGLDIRECPLSNGLEKKLRDAKRIVDESLVDPADIKEEYDCTPEELYGLLLESKPVTEDLVFAHGDYCAPNLIIDGEKLSGFIDLGRAGVADRYQDISLAIRSLRHDYGDDRYKALFLELYGLDGLDEDKVRYYIRLDEFF Resistance to butirosin and structurally-related aminoglycosides, including kanamycin and amikacin. APH(3')IV 262 Kanamycin kinase, type IV Butirosin resistance protein Aminoglycoside 3'-phosphotransferase KKA4_BACCI aphA4 aph Neomycin-kanamycin phosphotransferase type IV