Annotations: 1KNY

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1knya1	All alpha proteins	Four-helical up-and-down bundle	Nucleotidyltransferase substrate binding subunit/domain	Kanamycin nucleotidyltransferase (KNTase), C-terminal domain	Kanamycin nucleotidyltransferase (KNTase), C-terminal domain	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
A	d1knya2	Alpha and beta proteins (a+b)	Nucleotidyltransferase	Nucleotidyltransferase	Kanamycin nucleotidyltransferase (KNTase), N-terminal domain	Kanamycin nucleotidyltransferase (KNTase), N-terminal domain	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
B	d1knyb1	All alpha proteins	Four-helical up-and-down bundle	Nucleotidyltransferase substrate binding subunit/domain	Kanamycin nucleotidyltransferase (KNTase), C-terminal domain	Kanamycin nucleotidyltransferase (KNTase), C-terminal domain	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)
B	d1knyb2	Alpha and beta proteins (a+b)	Nucleotidyltransferase	Nucleotidyltransferase	Kanamycin nucleotidyltransferase (KNTase), N-terminal domain	Kanamycin nucleotidyltransferase (KNTase), N-terminal domain	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Kanamycin nucleotidyltransferase (KNTase), C-terminal domain	8029755	4002165	SCOP2 (2022-06-29)
A	SCOP2 Family	Kanamycin nucleotidyltransferase (KNTase), N-terminal domain	8029756	4002814	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	HEPN domain-like	8042134	3000904	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nucleotidyltransferase-like	8042135	3000129	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	HEPN domain-like	8042134	3000904	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nucleotidyltransferase-like	8042135	3000129	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	KNTase_C	e1knyA1	A: alpha bundles	X: Four-helical up-and-down bundle	H: HEPN	T: Nucleotidyltransferase substrate binding subunit/domain	F: KNTase_C	ECOD (1.6)
A	NTP_transf_2	e1knyA2	A: a+b three layers	X: Nucleotidyltransferase-like	H: Nucleotidyltransferase (From Topology)	T: Nucleotidyltransferase	F: NTP_transf_2	ECOD (1.6)
B	KNTase_C	e1knyB1	A: alpha bundles	X: Four-helical up-and-down bundle	H: HEPN	T: Nucleotidyltransferase substrate binding subunit/domain	F: KNTase_C	ECOD (1.6)
B	NTP_transf_2	e1knyB2	A: a+b three layers	X: Nucleotidyltransferase-like	H: Nucleotidyltransferase (From Topology)	T: Nucleotidyltransferase	F: NTP_transf_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2	CATH (4.3.0)
A	1.20.120.330	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Nucleotidyltransferases domain 2	CATH (4.3.0)
B	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2	CATH (4.3.0)
B	1.20.120.330	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Nucleotidyltransferases domain 2	CATH (4.3.0)

AMR Gene: CARD Annotation CARD Database Homepage

Chains	Accession	Short Name	Description	Provenance Source (Version)
A, B	ARO:3002623	ANT(4')-Ia	ANT(4')-Ia is a plasmid-encoded aminoglycoside nucleotidyltransferase in S. epidermidis, S. aureus, Enterococcus spp. and Bacillus spp.	CARD (4.0.0)

AMR Gene Family: CARD Annotation CARD Database Homepage

Chains	Accession	Gene Family	Drug Class	Resistance Machanism	Provenance Source (Version)
A, B	ARO:3000229	ANT(4')	aminoglycoside antibiotic	antibiotic inactivation	CARD (4.0.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF07827	KNTase C-terminal domain (KNTase_C)	KNTase C-terminal domain	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].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	KANAMYCIN NUCLEOTIDYLTRANSFERASE	transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups	response to stimulus response to chemical response to antibiotic	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR043519	Nucleotidyltransferase superfamily	Homologous Superfamily
A, B	IPR012481	Kanamycin nucleotidyltransferase, C-terminal	Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A, B	kanamycin nucleotidyltransferase M-CSA #647	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 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.7.7 (PDB Primary Data) Search M-CSA Motif + EC 2.7.7

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.