aminoglyco-side 3′-phosphotransferaseThe aminoglycoside 3′-phosphotransferase type I (APHI)-coding gene of the bacterial transposon Tn903 confers resistance to kanamycin on bacteria and resistance to geneticin (G418) on many eukaryotes. We developed an APHI fusion system that can be used in the...
Contrary to the dogma that these enzymes use ATP as the source of phosphate in their reactions, two of the four aminoglycoside 2′-phosphotransferases utilize GTP as the phosphate donor. Of the other two enzymes, one exhibits preference for ATP, and the other can utilize either ATP or GTP ...