Kanamycin nucleotidyltransferase (KNTase) is involved in conferring resistance to aminoglycoside antibiotics and catalyses the transfer of a nucleoside monophosphate group from a nucleotide to kanamycin. This enzyme is dimeric with each subunit be ...
Kanamycin nucleotidyltransferase (KNTase) is involved in conferring resistance to aminoglycoside antibiotics and catalyses the transfer of a nucleoside monophosphate group from a nucleotide to kanamycin. This enzyme is dimeric with each subunit being composed of two domains. The C-terminal domain contains five alpha helices, four of which are organised into an up-and-down alpha helical bundle. Residues found in this domain may contribute to this enzyme's active site [1].
Kanamycin nucleotidyltransferase (KNTase) is a plasmid encoded enzyme responsible for some types of bacterial resistance to aminoglycosides. It catalyses the transfer of a nucleoside monophosphate group onto the 4' hydroxyl group of kanamycin, causing deactivation of this drug. The enzyme is also capable of deactivating many other drugs including neomycins, and can utilise ATP, GTP, CTP, TTP or UTP as the NMP donor.
Defined by 4 residues: GLU:A-145LYS:A-149ASP:B-50GLU:B-52
