Annotations: 4RWP

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)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	OAS1_C	e4rwpA1	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	e4rwpA2	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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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	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	2'-5'-oligoadenylate synthase 1	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 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	regulation of ribonuclease activity regulation of biological 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 regulation of nuclease activity regulation of ribonuclease activity regulation of biological 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 regulation of nuclease activity metabolic process regulation of nucleobase-containing compound metabolic process macromolecule metabolic process regulation of metabolic process 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 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 immune system process defense response to other organism response to stress innate immune response response to external biotic stimulus transformation of host cell by virus modulation by virus of host process 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 modulation by virus of host cellular process defense response to virus response to virus	membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle membrane extracellular region cytosol nucleus membrane-enclosed lumen intracellular organelle lumen membrane-bounded organelle intracellular organelle intracellular anatomical structure mitochondrion organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle membrane extracellular region cytosol nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen endoplasmic reticulum endomembrane system
B	RNA (5'-R(GPGPCPUPUPUPUPGPAPCPCPUPUPUPAPUPGPAP*A)-3')	-	-	-
C	RNA (5'-R(UPUPCPAPUPAPAPAPGPGPUPCPAPAPAPAPGPCP*C)-3')	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

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