4R2X

Unique conformation of uridine and asymmetry of the hexameric molecule revealed in the high-resolution structures of Shewanella oneidensis uridine phosphorylase in the free form and in complex with uridine

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth C]	SCOP2B Superfamily	Purine and uridine phosphorylases	8074241	3000626	SCOP2B (2022-06-29)
B [auth D]	SCOP2B Superfamily	Purine and uridine phosphorylases	8074241	3000626	SCOP2B (2022-06-29)
C [auth E]	SCOP2B Superfamily	Purine and uridine phosphorylases	8074241	3000626	SCOP2B (2022-06-29)
D [auth F]	SCOP2B Superfamily	Purine and uridine phosphorylases	8074241	3000626	SCOP2B (2022-06-29)
E [auth A]	SCOP2B Superfamily	Purine and uridine phosphorylases	8074241	3000626	SCOP2B (2022-06-29)
F [auth B]	SCOP2B Superfamily	Purine and uridine phosphorylases	8074241	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 [auth C]	PNP_UDP_1	e4r2xC1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Peptidyl-tRNA hydrolase-like (From Topology)	T: Peptidyl-tRNA hydrolase-like	F: PNP_UDP_1	ECOD (1.6)
B [auth D]	PNP_UDP_1	e4r2xD1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Peptidyl-tRNA hydrolase-like (From Topology)	T: Peptidyl-tRNA hydrolase-like	F: PNP_UDP_1	ECOD (1.6)
C [auth E]	PNP_UDP_1	e4r2xE1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Peptidyl-tRNA hydrolase-like (From Topology)	T: Peptidyl-tRNA hydrolase-like	F: PNP_UDP_1	ECOD (1.6)
D [auth F]	PNP_UDP_1	e4r2xF1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Peptidyl-tRNA hydrolase-like (From Topology)	T: Peptidyl-tRNA hydrolase-like	F: PNP_UDP_1	ECOD (1.6)
E [auth A]	PNP_UDP_1	e4r2xA1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Peptidyl-tRNA hydrolase-like (From Topology)	T: Peptidyl-tRNA hydrolase-like	F: PNP_UDP_1	ECOD (1.6)
F [auth B]	PNP_UDP_1	e4r2xB1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Peptidyl-tRNA hydrolase-like (From Topology)	T: Peptidyl-tRNA hydrolase-like	F: PNP_UDP_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], F [auth B]	PF01048	Phosphorylase superfamily (PNP_UDP_1)	Phosphorylase superfamily	Members of this family include: purine nucleoside phosphorylase (PNP) Uridine phosphorylase (UdRPase) 5'-methylthioadenosine phosphorylase (MTA phosphorylase)	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], F [auth B]	uridine phosphorylase	pentosyltransferase activity glycosyltransferase activity uridine phosphorylase activity transferase activity catalytic activity pyrimidine-nucleoside phosphorylase activity	ribose phosphate metabolic process nucleotide biosynthetic process pyrimidine ribonucleotide salvage carbohydrate derivative metabolic process pyrimidine nucleotide metabolic process pyrimidine-containing compound salvage nucleobase-containing compound metabolic process pyrimidine nucleotide salvage nucleotide salvage ribonucleotide biosynthetic process UMP salvage UMP biosynthetic process ribonucleotide metabolic process ribonucleoside monophosphate metabolic process nucleobase-containing small molecule metabolic process ribose phosphate metabolic process nucleotide biosynthetic process pyrimidine ribonucleotide salvage carbohydrate derivative metabolic process pyrimidine nucleotide metabolic process pyrimidine-containing compound salvage nucleobase-containing compound metabolic process pyrimidine nucleotide salvage nucleotide salvage ribonucleotide biosynthetic process UMP salvage UMP biosynthetic process ribonucleotide metabolic process ribonucleoside monophosphate metabolic process nucleobase-containing small molecule metabolic process phosphate-containing compound metabolic process UMP metabolic process small molecule metabolic process pyrimidine-containing compound biosynthetic process phosphorus metabolic process ribose phosphate biosynthetic process cellular metabolic compound salvage nucleoside monophosphate metabolic process pyrimidine ribonucleotide metabolic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process pyrimidine nucleoside monophosphate metabolic process pyrimidine-containing compound metabolic process pyrimidine ribonucleoside monophosphate metabolic process cellular metabolic process primary metabolic process nucleobase-containing compound biosynthetic process nucleotide metabolic process nucleoside monophosphate biosynthetic process biosynthetic process organophosphate metabolic process pyrimidine ribonucleoside monophosphate biosynthetic process organophosphate biosynthetic process nucleoside phosphate biosynthetic process metabolic process cellular process pyrimidine nucleoside monophosphate biosynthetic process ribonucleoside monophosphate biosynthetic process pyrimidine nucleotide biosynthetic process pyrimidine ribonucleotide biosynthetic process carbohydrate derivative catabolic process glycosyl compound metabolic process catabolic process glycosyl compound catabolic process nucleoside metabolic process nucleobase-containing compound catabolic process nucleobase-containing small molecule catabolic process nucleoside catabolic process small molecule catabolic process organophosphate catabolic process nucleoside phosphate catabolic process nucleotide catabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], F [auth B]	IPR018016	Nucleoside phosphorylase, conserved site	Conserved Site
A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], F [auth B]	IPR035994	Nucleoside phosphorylase superfamily	Homologous Superfamily
A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], F [auth B]	IPR010058	Uridine phosphorylase	Family
A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], A [auth C], B [auth D], C [auth E], D [auth F], E [auth A], F [auth B]	IPR000845	Nucleoside phosphorylase domain	Domain

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.