Annotations: 3NM4

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3nm4a_	Alpha and beta proteins (a/b)	Phosphorylase/hydrolase-like	Purine and uridine phosphorylases	automated matches	automated matches	Campylobacter pylori (Helicobacter pylori J99 ) [TaxId: 85963 ],	SCOPe (2.08)
B	d3nm4b_	Alpha and beta proteins (a/b)	Phosphorylase/hydrolase-like	Purine and uridine phosphorylases	automated matches	automated matches	Campylobacter pylori (Helicobacter pylori J99 ) [TaxId: 85963 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Purine and uridine phosphorylases	8100770	3000626	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Purine and uridine phosphorylases	8100770	3000626	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	Arm	e3nm4A1	A: a/b three-layered sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Arm	ECOD (v294.1)
B	FAD_binding_4	e3nm4B1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: FAD_binding_4	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1580	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleoside phosphorylase domain	CATH (4.3.0)
B	3.40.50.1580	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleoside phosphorylase domain	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	MTA/SAH nucleosidase	hydrolase activity, acting on glycosyl bonds purine nucleosidase activity hydrolase activity methylthioadenosine nucleosidase activity hydrolase activity, hydrolyzing N-glycosyl compounds catalytic activity 6-amino-6-deoxyfutalosine hydrolase activity adenosylhomocysteine nucleosidase activity	biosynthetic process small molecule biosynthetic process ketone metabolic process menaquinone metabolic process metabolic process cellular process small molecule metabolic process menaquinone biosynthetic process ketone biosynthetic process carbohydrate derivative catabolic process catabolic process carbohydrate derivative metabolic process primary metabolic process glycosyl compound catabolic process biosynthetic process small molecule biosynthetic process ketone metabolic process menaquinone metabolic process metabolic process cellular process small molecule metabolic process menaquinone biosynthetic process ketone biosynthetic process carbohydrate derivative catabolic process catabolic process carbohydrate derivative metabolic process primary metabolic process glycosyl compound catabolic process nucleoside metabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process nucleobase-containing small molecule catabolic process nucleobase-containing small molecule metabolic process nucleoside catabolic process small molecule catabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR035994	Nucleoside phosphorylase superfamily	Homologous Superfamily
A, B	IPR000845	Nucleoside phosphorylase domain	Domain
A, B	IPR010049	MTA/SAH nucleosidase	Family

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.