kanamycin A + CTP <=> 4'-cytidylylkanamycin A + diphosphate
kanamycin a + ctp <=> 4'-cytidylylkanamycin a + diphosphate
kanamycin A + CTP <=> 4'-cytidylylkanamycin A + diphosphate
kanamycin a + ctp <=> 4'-cytidylylkanamycin a + diphosphate