Annotations: 1KTG

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ktga_	Alpha and beta proteins (a+b)	Nudix	Nudix	MutT-like	Diadenosine tetraphosphate hydrolase (Ap4A hydrolase)	(Caenorhabditis elegans ) [TaxId: 6239 ],	SCOPe (2.08)
B	d1ktgb_	Alpha and beta proteins (a+b)	Nudix	Nudix	MutT-like	Diadenosine tetraphosphate hydrolase (Ap4A hydrolase)	(Caenorhabditis elegans ) [TaxId: 6239 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	MutT-like	8028286	4001887	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nudix	8040665	3000098	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Nudix	8040665	3000098	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	NUDIX_1	e1ktgA1	A: a+b two layers	X: beta-Grasp	H: Nudix (From Topology)	T: Nudix	F: NUDIX_1	ECOD (1.6)
B	NUDIX_1	e1ktgB1	A: a+b two layers	X: beta-Grasp	H: Nudix (From Topology)	T: Nudix	F: NUDIX_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.79.10	Alpha Beta	Alpha-Beta Complex	Nucleoside Triphosphate Pyrophosphohydrolase	Nucleoside Triphosphate Pyrophosphohydrolase	CATH (4.3.0)
B	3.90.79.10	Alpha Beta	Alpha-Beta Complex	Nucleoside Triphosphate Pyrophosphohydrolase	Nucleoside Triphosphate Pyrophosphohydrolase	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00293	NUDIX domain (NUDIX)	NUDIX domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Diadenosine Tetraphosphate Hydrolase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity bis(5'-nucleosyl)-tetraphosphatase (asymmetrical) activity bis(5'-nucleosyl)-tetraphosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity 5-phosphoribosyl 1-pyrophosphate pyrophosphatase activity	ribose phosphate metabolic process nucleotide biosynthetic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside diphosphate biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process nucleoside diphosphate biosynthetic process purine nucleotide metabolic process organic substance metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process phosphate-containing compound metabolic process ribose phosphate metabolic process nucleotide biosynthetic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process purine ribonucleotide biosynthetic process purine ribonucleoside diphosphate biosynthetic process nucleobase-containing compound metabolic process ribonucleotide biosynthetic process nucleoside diphosphate biosynthetic process purine nucleotide metabolic process organic substance metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process phosphate-containing compound metabolic process organic substance biosynthetic process ribonucleoside diphosphate metabolic process ADP biosynthetic process small molecule metabolic process phosphorus metabolic process ribose phosphate biosynthetic process nucleoside phosphate metabolic process carbohydrate derivative biosynthetic process organonitrogen compound metabolic process cellular metabolic process purine nucleoside diphosphate metabolic process primary metabolic process purine nucleoside diphosphate biosynthetic process nucleotide metabolic process nucleobase-containing compound biosynthetic process purine-containing compound metabolic process organic cyclic compound metabolic process ADP metabolic process nucleoside diphosphate metabolic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process organic cyclic compound biosynthetic process nucleoside phosphate biosynthetic process purine ribonucleoside diphosphate metabolic process metabolic process cellular process purine ribonucleotide metabolic process purine nucleotide biosynthetic process ribonucleoside diphosphate biosynthetic process purine ribonucleoside monophosphate biosynthetic process AMP metabolic process purine nucleoside monophosphate biosynthetic process purine ribonucleoside monophosphate metabolic process ribonucleoside monophosphate metabolic process purine nucleoside monophosphate metabolic process nucleoside monophosphate metabolic process nucleoside monophosphate biosynthetic process AMP biosynthetic process ribonucleoside monophosphate biosynthetic process catabolic process organophosphate catabolic process diadenosine polyphosphate metabolic process nucleoside phosphate catabolic process diadenosine tetraphosphate catabolic process nucleotide catabolic process organic cyclic compound catabolic process nucleobase-containing compound catabolic process diadenosine tetraphosphate metabolic process diadenosine polyphosphate catabolic process organic substance catabolic process apoptotic process cell death programmed cell death ATP metabolic process ATP biosynthetic process purine ribonucleoside triphosphate biosynthetic process purine nucleoside triphosphate biosynthetic process purine ribonucleoside triphosphate metabolic process ribonucleoside triphosphate metabolic process purine nucleoside triphosphate metabolic process nucleoside triphosphate biosynthetic process ribonucleoside triphosphate biosynthetic process nucleoside triphosphate metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003565	Bis(5'-nucleosyl)-tetraphosphatase	Family
A, B	IPR000086	NUDIX hydrolase domain	Domain
A, B	IPR015797	NUDIX hydrolase-like domain superfamily	Homologous Superfamily
A, B	IPR020084	NUDIX hydrolase, conserved site	Conserved Site

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.