Annotations: 1KTG

Crystal Structure of a C. elegans Ap4A Hydrolase Binary Complex

External Resource: Annotation

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1ktgb_	Alpha and beta proteins (a+b)	Nudix	Nudix	MutT-like	Diadenosine tetraphosphate hydrolase (Ap4A hydrolase)	(Caenorhabditis elegans ) [TaxId: 6239 ],	SCOPe (2.08)
A	d1ktga_	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)
B	SCOP2B Superfamily	Nudix	8040665	3000098	SCOP2B (2022-06-29)
A	SCOP2 Family	MutT-like	8028286	4001887	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nudix	8040665	3000098	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)
B	Polyketide_cyc2	e1ktgB1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: Polyketide_cyc2	ECOD (v294.1)
A	NUDIX	e1ktgA1	A: a+b two layers	X: beta-Grasp	H: Nudix	T: Nudix	F: NUDIX	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

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

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 anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide 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 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 ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process phosphate-containing compound metabolic process ribonucleoside diphosphate metabolic process ribose phosphate metabolic process nucleotide 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 ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine-containing compound biosynthetic process phosphate-containing compound metabolic 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 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 ADP metabolic process nucleoside diphosphate metabolic process biosynthetic process organophosphate metabolic process organophosphate 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 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 nucleobase-containing compound catabolic process diadenosine polyphosphate catabolic process diadenosine tetraphosphate catabolic process nucleotide 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 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	IPR051325	Nudix hydrolase domain-containing protein	Family
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

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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.