Annotations: 4N0N

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF17873	e4n0nA3	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: PF17873	ECOD (1.6)
A	F_UNCLASSIFIED	e4n0nA2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF01443	e4n0nA4	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF01443	ECOD (1.6)
A	PF17977	e4n0nA1	A: few secondary structure elements	X: RING/U-box-like	H: RING/U-box-like	T: RING/U-box	F: PF17977	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF17873	Replicase polyprotein 1ab (Rep_1B)	Replicase polyprotein 1ab	This entry relates to a regulatory domain found in replicase polyprotein 1ab found in Arterivirus. Structural studies of arterivirus helicase (nsp10), indicate that this domain undergoes conformational changes on substrate binding. Besides the large ...	This entry relates to a regulatory domain found in replicase polyprotein 1ab found in Arterivirus. Structural studies of arterivirus helicase (nsp10), indicate that this domain undergoes conformational changes on substrate binding. Besides the large conformational change, it is suggested that the regions at the surface of domain 1B not directly involved in DNA binding may become flexible. For example, domain 1B residues Arg95, Gly125 and Ala131 become disordered after DNA binding. Together with domains 1A and 2A it forms a nucleic acid-binding channel where the single-stranded part of the DNA substrate is bound to [1].	Domain
A	PF01443	Viral (Superfamily 1) RNA helicase (Viral_helicase1)	Viral (Superfamily 1) RNA helicase	-	Family
A	PF17977	RING/Ubox like zinc-binding domain (zf-RING_13)	RING/Ubox like zinc-binding domain	This is a zinc binding domain found in nidovirus helicase. It includes includes 12 or 13 conserved Cys/His residues. Amino acid substitutions in ZBD or the adjacent spacer that connects it to the downstream domain can profoundly affect EAV (equine ar ...	This is a zinc binding domain found in nidovirus helicase. It includes includes 12 or 13 conserved Cys/His residues. Amino acid substitutions in ZBD or the adjacent spacer that connects it to the downstream domain can profoundly affect EAV (equine arteritis virus) helicase activity and RNA synthesis, with most replacements of conserved Cys or His residues yielding replication-negative virus phenotypes [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Replicase polyprotein 1ab	serine-type exopeptidase activity peptidase activity serine hydrolase activity catalytic activity, acting on a protein serine-type peptidase activity hydrolase activity exopeptidase activity catalytic activity serine-type endopeptidase activity endopeptidase activity binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding serine-type exopeptidase activity peptidase activity serine hydrolase activity catalytic activity, acting on a protein serine-type peptidase activity hydrolase activity exopeptidase activity catalytic activity serine-type endopeptidase activity endopeptidase activity 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 catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid helicase activity RNA helicase activity ATP-dependent activity, acting on RNA ATP-dependent activity endonuclease activity nuclease activity hydrolase activity, acting on ester bonds 5'-3' RNA polymerase activity RNA polymerase activity transferase activity RNA-dependent RNA polymerase activity nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups cysteine-type peptidase activity cysteine-type endopeptidase activity lyase activity RNA binding nucleic acid binding ubiquitin-like protein peptidase activity cysteine-type deubiquitinase activity deubiquitinase activity RNA nuclease activity pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity, acting on acid anhydrides cation binding transition metal ion binding zinc ion binding metal ion binding	cellular biosynthetic process cellular metabolic process RNA metabolic process viral life cycle primary metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process nucleic acid biosynthetic process organic substance metabolic process viral genome replication biosynthetic process cellular biosynthetic process cellular metabolic process RNA metabolic process viral life cycle primary metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process nucleic acid biosynthetic process organic substance metabolic process viral genome replication biosynthetic process viral RNA genome replication organic cyclic compound biosynthetic process viral process organic substance biosynthetic process metabolic process cellular process macromolecule metabolic process symbiont-mediated perturbation of host defense response symbiont-mediated suppression of host ISG15-protein conjugation response to host defenses biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response response to defenses of other organism symbiont-mediated perturbation of host defenses response to external stimulus response to biotic stimulus biological process involved in interaction with host biological process involved in symbiotic interaction symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response modulation by symbiont of host process response to host immune response symbiont-mediated suppression of host defenses symbiont-mediated perturbation of host innate immune response response to host response to external biotic stimulus modulation of process of another organism viral gene expression viral protein processing gene expression DNA-templated transcription symbiont-mediated perturbation of host cellular process symbiont-mediated suppression of host type I interferon-mediated signaling pathway symbiont-mediated suppression of host signal transduction pathway symbiont-mediated suppression of host interferon-mediated signaling pathway symbiont-mediated perturbation of host signal transduction pathway symbiont-mediated perturbation of host ubiquitin-like protein modification organonitrogen compound metabolic process proteolysis protein metabolic process	membrane cellular anatomical entity host cellular component host intracellular part host cell perinuclear region of cytoplasm host cell cytoplasm host cell part host intracellular region host cell cytoplasm part host cell membrane host intracellular membrane-bounded organelle host cell nucleus host intracellular organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR008741	Arterivirus papain-like cysteine protease alpha (PCPalpha) domain	Domain
A	IPR029323	Equine arteritis virus, non-structural protein 1	Domain
A	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
A	IPR025773	Arterivirus papain-like cysteine protease beta (PCPbeta) domain	Domain
A	IPR044863	Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR037227	Endoribonuclease EndoU-like	Homologous Superfamily
A	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A	IPR022230	Protein of unknown function DUF3756	Family
A	IPR008760	Equine arteritis virus peptidase S32	Family
A	IPR032786	Nsp2, transmembrane domain	Domain
A	IPR038451	Arterivirus nsp7 alpha superfamily	Homologous Superfamily
A	IPR027351	(+) RNA virus helicase core domain	Domain
A	IPR041053	Replicase polyprotein 1ab	Domain
A	IPR023338	Arterivirus NSP4 peptidase domain	Domain
A	IPR008743	Arterivirus Nsp2, peptidase C33	Domain
A	IPR001205	RNA-directed RNA polymerase, C-terminal domain	Domain
A	IPR027355	Nonstructural protein 10, zinc-binding domain, arterivirus	Domain
A	IPR046440	Arterivirus Nsp11 N-terminal/Coronavirus NSP15 middle domain	Domain
A	IPR044320	NSP11, N-terminal, arterivirus	Domain
A	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
A	IPR023183	Serine protease, chymotrypsin-like serine protease, C-terminal	Homologous Superfamily
A	IPR043609	NendoU domain, nidovirus	Domain
A	IPR044314	NSP11, NendoU domain, arterivirus	Domain
A	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
A	IPR007094	RNA-directed RNA polymerase, catalytic domain	Domain
A	IPR041361	Nidovirus helicase, RING/Ubox like zinc-binding domain	Domain
A	IPR031932	Arterivirus nonstructural protein 7 alpha	Family