Annotations: 4KPO

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4kpoa1	Alpha and beta proteins (a/b)	Nucleoside hydrolase	Nucleoside hydrolase	automated matches	automated matches	maize (Zea mays ) [TaxId: 4577 ],	SCOPe (2.08)
A	d4kpoa2	Artifacts	Tags	Tags	Tags	N-terminal Tags	maize (Zea mays ) [TaxId: 4577 ],	SCOPe (2.08)
B	d4kpob1	Alpha and beta proteins (a/b)	Nucleoside hydrolase	Nucleoside hydrolase	automated matches	automated matches	maize (Zea mays ) [TaxId: 4577 ],	SCOPe (2.08)
B	d4kpob2	Artifacts	Tags	Tags	Tags	N-terminal Tags	maize (Zea mays ) [TaxId: 4577 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Nucleoside hydrolase	8080170	4000751	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nucleoside hydrolase	8080171	3001240	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Nucleoside hydrolase	8080171	3001240	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	IU_nuc_hydro	e4kpoA1	A: a/b three-layered sandwiches	X: Nucleoside hydrolase (From Topology)	H: Nucleoside hydrolase (From Topology)	T: Nucleoside hydrolase	F: IU_nuc_hydro	ECOD (1.6)
B	IU_nuc_hydro	e4kpoB1	A: a/b three-layered sandwiches	X: Nucleoside hydrolase (From Topology)	H: Nucleoside hydrolase (From Topology)	T: Nucleoside hydrolase	F: IU_nuc_hydro	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.245.10	Alpha Beta	Alpha-Beta Complex	Inosine-uridine Nucleoside N-ribohydrolase	Chain A	CATH (4.3.0)
B	3.90.245.10	Alpha Beta	Alpha-Beta Complex	Inosine-uridine Nucleoside N-ribohydrolase	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01156	Inosine-uridine preferring nucleoside hydrolase (IU_nuc_hydro)	Inosine-uridine preferring nucleoside hydrolase	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Nucleoside N-ribohydrolase 3	hydrolase activity, acting on glycosyl bonds hydrolase activity hydrolase activity, hydrolyzing N-glycosyl compounds catalytic activity cation binding ion binding binding metal ion binding small molecule binding	cellular metabolic process cellular nitrogen compound metabolic process primary metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process heterocycle metabolic process nitrogen compound metabolic process metabolic process cellular process cellular aromatic compound metabolic process organonitrogen compound metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036452	Ribonucleoside hydrolase-like	Homologous Superfamily
A, B	IPR023186	Inosine/uridine-preferring nucleoside hydrolase	Family
A, B	IPR001910	Inosine/uridine-preferring nucleoside hydrolase domain	Domain

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.