1PX5

Crystal structure of the 2'-specific and double-stranded RNA-activated interferon-induced antiviral protein 2'-5'-oligoadenylate synthetase

External Resource: Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1px5a1	All alpha proteins	PAP/OAS1 substrate-binding domain	PAP/OAS1 substrate-binding domain	2'-5'-oligoadenylate synthetase 1, OAS1, second domain	2'-5'-oligoadenylate synthetase 1, OAS1, second domain	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
A	d1px5a2	Alpha and beta proteins (a+b)	Nucleotidyltransferase	Nucleotidyltransferase	2'-5'-oligoadenylate synthetase 1, OAS1, N-terminal domain	2'-5'-oligoadenylate synthetase 1, OAS1, N-terminal domain	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
B	d1px5b1	All alpha proteins	PAP/OAS1 substrate-binding domain	PAP/OAS1 substrate-binding domain	2'-5'-oligoadenylate synthetase 1, OAS1, second domain	2'-5'-oligoadenylate synthetase 1, OAS1, second domain	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)
B	d1px5b2	Alpha and beta proteins (a+b)	Nucleotidyltransferase	Nucleotidyltransferase	2'-5'-oligoadenylate synthetase 1, OAS1, N-terminal domain	2'-5'-oligoadenylate synthetase 1, OAS1, N-terminal domain	pig (Sus scrofa ) [TaxId: 9823 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	PAP/OAS1 substrate-binding domain-like	8039304	3000941	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Nucleotidyltransferase-like	8039305	3000129	SCOP2B (2022-06-29)
B	SCOP2 Family	2'-5'-oligoadenylate synthetase 1, OAS1, second domain	8026925	4000680	SCOP2 (2022-06-29)
B	SCOP2 Family	2'-5'-oligoadenylate synthetase 1, OAS1, N-terminal domain	8026926	4001412	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	PAP/OAS1 substrate-binding domain-like	8039304	3000941	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Nucleotidyltransferase-like	8039305	3000129	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	OAS1_C	e1px5A1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: PAP/OAS1 substrate-binding domain	F: OAS1_C	ECOD (1.6)
A	NTP_transf_2_1	e1px5A2	A: a+b three layers	X: Nucleotidyltransferase-like	H: Nucleotidyltransferase (From Topology)	T: Nucleotidyltransferase	F: NTP_transf_2_1	ECOD (1.6)
B	OAS1_C	e1px5B1	A: alpha arrays	X: HhH/H2TH	H: SAM/DNA-glycosylase	T: PAP/OAS1 substrate-binding domain	F: OAS1_C	ECOD (1.6)
B	NTP_transf_2_1	e1px5B2	A: a+b three layers	X: Nucleotidyltransferase-like	H: Nucleotidyltransferase (From Topology)	T: Nucleotidyltransferase	F: NTP_transf_2_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2	CATH (4.3.0)
A	1.10.1410.20	Mainly Alpha	Orthogonal Bundle	Poly(a)-polymerase, middle domain	2'-5'-oligoadenylate synthetase 1, domain 2	CATH (4.3.0)
B	3.30.460.10	Alpha Beta	2-Layer Sandwich	Beta Polymerase	domain 2	CATH (4.3.0)
B	1.10.1410.20	Mainly Alpha	Orthogonal Bundle	Poly(a)-polymerase, middle domain	2'-5'-oligoadenylate synthetase 1, domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF10421	2'-5'-oligoadenylate synthetase 1, domain 2, C-terminus (OAS1_C)	2'-5'-oligoadenylate synthetase 1, domain 2, C-terminus	This is the largely alpha-helical, C-terminal half of 2'-5'-oligoadenylate synthetase 1, being described as domain 2 of the enzyme and homologous to a tandem ubiquitin repeat. It carries the region of enzymic activity between 320 and 344 at the extre ...	This is the largely alpha-helical, C-terminal half of 2'-5'-oligoadenylate synthetase 1, being described as domain 2 of the enzyme and homologous to a tandem ubiquitin repeat. It carries the region of enzymic activity between 320 and 344 at the extreme C-terminal end [1]. Oligoadenylate synthetases are antiviral enzymes that counteract vial attack by degrading viral RNA. The enzyme uses ATP in 2'-specific nucleotidyl transfer reactions to synthesise 2'.5'-oligoadenylates, which activate latent ribonuclease, resulting in degradation of viral RNA and inhibition of virus replication [2]. This domain is often associated with NTP_transf_2 Pfam:PF01909.	Domain
A, B	PF01909	Nucleotidyltransferase domain (NTP_transf_2)	Nucleotidyltransferase domain	Members of this family belong to a large family of nucleotidyltransferases [1]. This family includes kanamycin nucleotidyltransferase (KNTase) which is a plasmid-coded enzyme responsible for some types of bacterial resistance to aminoglycosides. KNTa ...	Members of this family belong to a large family of nucleotidyltransferases [1]. This family includes kanamycin nucleotidyltransferase (KNTase) which is a plasmid-coded enzyme responsible for some types of bacterial resistance to aminoglycosides. KNTase in-activates antibiotics by catalysing the addition of a nucleotidyl group onto the drug.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	2'-5'-oligoadenylate synthetase 1	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 RNA binding double-stranded RNA binding nucleic acid binding 2'-5'-oligoadenylate synthetase activity adenylyltransferase activity transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups cation binding metal ion binding	biological process involved in interspecies interaction between organisms response to stimulus immune response response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to virus immune system process defense response to other organism response to stress innate immune response antiviral innate immune response biological process involved in interspecies interaction between organisms response to stimulus immune response response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to virus immune system process defense response to other organism response to stress innate immune response antiviral innate immune response response to external biotic stimulus response to virus regulation of ribonuclease activity regulation of biological process regulation of cellular process regulation of catalytic activity biological regulation RNA metabolic process primary metabolic process regulation of macromolecule metabolic process nucleic acid metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process regulation of molecular function regulation of RNA metabolic process regulation of hydrolase activity cellular process metabolic process regulation of nucleobase-containing compound metabolic process macromolecule metabolic process regulation of metabolic process cellular response to stimulus cell surface receptor signaling pathway signaling response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular response to cytokine stimulus interleukin-27-mediated signaling pathway signal transduction negative regulation of viral genome replication negative regulation of biological process viral life cycle negative regulation of viral process regulation of viral process regulation of viral life cycle viral genome replication viral process regulation of viral genome replication symbiont-mediated perturbation of host cellular process symbiont-mediated transformation of host cell biological process involved in interaction with host biological process involved in symbiotic interaction negative regulation of transformation of host cell by virus regulation of transformation of host cell by virus symbiont-mediated perturbation of host process modulation of process of another organism regulation of biological process involved in symbiotic interaction interferon-mediated signaling pathway cellular response to type I interferon type I interferon-mediated signaling pathway response to type I interferon	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle membrane extracellular region cytosol nucleus membrane-enclosed lumen intracellular organelle lumen membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle membrane extracellular region cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen endoplasmic reticulum endomembrane system

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR043518	2-5-oligoadenylate synthetase, N-terminal conserved site	Conserved Site
A, B	IPR006117	2-5-oligoadenylate synthetase, C-terminal conserved site	Conserved Site
A, B	IPR006116	2-5OAS/ClassI-CCAase, nucleotidyltransferase domain	Domain
A, B	IPR018952	2'-5'-oligoadenylate synthetase 1, domain 2/C-terminal	Domain
A, B	IPR043519	Nucleotidyltransferase superfamily	Homologous Superfamily
A, B	IPR002934	Polymerase, nucleotidyl transferase 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.