Annotations: 1WTA

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1wtaa_	Alpha and beta proteins (a/b)	Phosphorylase/hydrolase-like	Purine and uridine phosphorylases	Purine and uridine phosphorylases	automated matches	(Aeropyrum pernix K1 ) [TaxId: 272557 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Purine and uridine phosphorylases	8061223	4000573	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Purine and uridine phosphorylases	8061224	3000626	SCOP2 (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	PNP_UDP_1	e1wtaA1	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	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	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	5'-methylthioadenosine phosphorylase	pentosyltransferase activity glycosyltransferase activity S-methyl-5-thioadenosine phosphorylase activity purine-nucleoside phosphorylase activity transferase activity catalytic activity	oxoacid metabolic process sulfur amino acid metabolic process aspartate family amino acid biosynthetic process aspartate family amino acid metabolic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process sulfur compound metabolic process L-methionine biosynthetic process cellular metabolic compound salvage methionine biosynthetic process oxoacid metabolic process sulfur amino acid metabolic process aspartate family amino acid biosynthetic process aspartate family amino acid metabolic process amino acid metabolic process organic acid biosynthetic process organic acid metabolic process alpha-amino acid metabolic process carboxylic acid biosynthetic process small molecule metabolic process sulfur compound metabolic process L-methionine biosynthetic process cellular metabolic compound salvage methionine biosynthetic process small molecule biosynthetic process carboxylic acid metabolic process L-amino acid biosynthetic process primary metabolic process methionine metabolic process L-amino acid metabolic process proteinogenic amino acid metabolic process amino acid salvage amino acid biosynthetic process sulfur compound biosynthetic process biosynthetic process L-methionine salvage from methylthioadenosine proteinogenic amino acid biosynthetic process metabolic process cellular process L-methionine salvage sulfur amino acid biosynthetic process alpha-amino acid biosynthetic process glycosyl compound metabolic process carbohydrate derivative metabolic process nucleoside biosynthetic process nucleobase-containing compound metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process purine ribonucleoside metabolic process carbohydrate derivative biosynthetic process glycosyl compound biosynthetic process purine-containing compound salvage nucleoside salvage purine ribonucleoside biosynthetic process ribonucleoside biosynthetic process nucleobase-containing compound biosynthetic process nucleoside metabolic process nucleobase-containing small molecule biosynthetic process purine-containing compound metabolic process purine ribonucleoside salvage purine nucleoside biosynthetic process purine nucleoside metabolic process ribonucleoside metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR010044	Methylthioadenosine phosphorylase (MTAP)	Family
A	IPR035994	Nucleoside phosphorylase superfamily	Homologous Superfamily
A	IPR018099	Purine phosphorylase, family 2, conserved site	Conserved Site
A	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.