Annotations: 4GA4

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Cupin_7	e4ga4B4	A: a/b three-layered sandwiches	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Cupin_7	ECOD (v294.1)
A	14-3-3	e4ga4A1	A: a/b three-layered sandwiches	X: SSHS domain	H: Class II aaRS and biotin synthetases	T: Ribosome modulation factor	F: 14-3-3	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.970.10	Mainly Alpha	Up-down Bundle	Transferase, Pyrimidine Nucleoside Phosphorylase	Chain A, domain 3	CATH (4.3.0)
B	3.40.1030.10	Alpha Beta	3-Layer(aba) Sandwich	Pyrimidine Nucleoside Phosphorylase	Chain A, domain 2	CATH (4.3.0)
B	3.90.1170.30	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)
A	1.20.970.10	Mainly Alpha	Up-down Bundle	Transferase, Pyrimidine Nucleoside Phosphorylase	Chain A, domain 3	CATH (4.3.0)
A	3.40.1030.10	Alpha Beta	3-Layer(aba) Sandwich	Pyrimidine Nucleoside Phosphorylase	Chain A, domain 2	CATH (4.3.0)
A	3.90.1170.30	Alpha Beta	Alpha-Beta Complex	Aldehyde Oxidoreductase	domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00591	Glycosyl transferase family, a/b domain (Glycos_transf_3)	Glycosyl transferase family, a/b domain	This family includes anthranilate phosphoribosyltransferase (TrpD), thymidine phosphorylase. All these proteins can transfer a phosphorylated ribose substrate.	Domain
A, B	PF02885	Glycosyl transferase family, helical bundle domain (Glycos_trans_3N)	Glycosyl transferase family, helical bundle domain	This family includes anthranilate phosphoribosyltransferase (TrpD), thymidine phosphorylase. All these proteins can transfer a phosphorylated ribose substrate.	Domain
A, B	PF07831	Pyrimidine nucleoside phosphorylase C-terminal domain (PYNP_C)	Pyrimidine nucleoside phosphorylase C-terminal domain	This domain is found at the C-terminal end of the large alpha/beta domain making up various pyrimidine nucleoside phosphorylases [1,2]. It has slightly different conformations in different members of this family. For example, in pyrimidine nucleoside ...	This domain is found at the C-terminal end of the large alpha/beta domain making up various pyrimidine nucleoside phosphorylases [1,2]. It has slightly different conformations in different members of this family. For example, in pyrimidine nucleoside phosphorylase (PYNP, Swiss:P77826) there is an added three-stranded anti-parallel beta sheet as compared to other members of the family, such as E. coli thymidine phosphorylase (TP, Swiss:P07650) [1]. The domain contains an alpha/ beta hammerhead fold and residues in this domain seem to be important in formation of the homodimer [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Putative thymidine phosphorylase	1,4-alpha-oligoglucan phosphorylase activity glycosyltransferase activity transferase activity hexosyltransferase activity catalytic activity ion binding binding anion binding phosphate ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding cation binding 1,4-alpha-oligoglucan phosphorylase activity glycosyltransferase activity transferase activity hexosyltransferase activity catalytic activity ion binding binding anion binding phosphate ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding cation binding AMP binding nucleoside phosphate binding purine nucleotide binding adenyl nucleotide binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding pentosyltransferase activity	pyrimidine-containing compound metabolic process deoxyribonucleoside metabolic process carbohydrate derivative metabolic process primary metabolic process pyrimidine nucleoside metabolic process nucleoside metabolic process nucleobase-containing compound metabolic process nucleobase-containing small molecule metabolic process small molecule metabolic process metabolic process cellular process pyrimidine deoxyribonucleoside metabolic process pyrimidine nucleobase metabolic process nucleobase metabolic process pyrimidine-containing compound metabolic process deoxyribonucleoside metabolic process carbohydrate derivative metabolic process primary metabolic process pyrimidine nucleoside metabolic process nucleoside metabolic process nucleobase-containing compound metabolic process nucleobase-containing small molecule metabolic process small molecule metabolic process metabolic process cellular process pyrimidine deoxyribonucleoside metabolic process pyrimidine nucleobase metabolic process nucleobase metabolic process ribose phosphate metabolic process ribonucleotide catabolic process catabolic process organophosphate catabolic process nucleoside phosphate catabolic process AMP metabolic process purine ribonucleoside monophosphate catabolic process purine nucleoside monophosphate catabolic process purine ribonucleoside monophosphate metabolic process purine nucleotide metabolic process ribonucleotide metabolic process purine nucleoside monophosphate metabolic process phosphate-containing compound metabolic process ribonucleoside monophosphate catabolic process purine ribonucleotide catabolic process phosphorus metabolic process nucleoside monophosphate metabolic process nucleotide catabolic process nucleoside phosphate metabolic process purine nucleotide catabolic process carbohydrate derivative catabolic process nucleoside monophosphate catabolic process purine-containing compound catabolic process nucleotide metabolic process nucleobase-containing compound catabolic process purine-containing compound metabolic process organophosphate metabolic process AMP catabolic process purine ribonucleotide metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000053	Thymidine/pyrimidine-nucleoside phosphorylase	Family
A, B	IPR017713	AMP phosphorylase	Family
A, B	IPR035902	Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain superfamily	Homologous Superfamily
A, B	IPR036320	Glycosyl transferase family 3, N-terminal domain superfamily	Homologous Superfamily
A, B	IPR036566	Pyrimidine nucleoside phosphorylase-like, C-terminal domain superfamily	Homologous Superfamily
A, B	IPR000312	Glycosyl transferase, family 3	Domain
A, B	IPR017872	Pyrimidine-nucleoside phosphorylase, conserved site	Conserved Site
A, B	IPR017459	Glycosyl transferase family 3, N-terminal domain	Domain
A, B	IPR013466	Thymidine phosphorylase/AMP phosphorylase	Family
A, B	IPR013102	Pyrimidine nucleoside phosphorylase, C-terminal	Domain

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