Annotations: 4OPA

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth B]	PF00600	e4opaB2	A: alpha arrays	X: S15/NS1 RNA-binding domain (From Topology)	H: S15/NS1 RNA-binding domain (From Topology)	T: S15/NS1 RNA-binding domain	F: PF00600	ECOD (1.6)
A [auth B]	PF00600	e4opaB1	A: mixed a+b and a/b	X: Ns1 effector domain-like (From Topology)	H: Ns1 effector domain-like (From Topology)	T: Ns1 effector domain-like	F: PF00600	ECOD (1.6)
B [auth A]	PF00600	e4opaA2	A: alpha arrays	X: S15/NS1 RNA-binding domain (From Topology)	H: S15/NS1 RNA-binding domain (From Topology)	T: S15/NS1 RNA-binding domain	F: PF00600	ECOD (1.6)
B [auth A]	PF00600	e4opaA1	A: mixed a+b and a/b	X: Ns1 effector domain-like (From Topology)	H: Ns1 effector domain-like (From Topology)	T: Ns1 effector domain-like	F: PF00600	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth B]	1.10.287.10	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	S15/NS1, RNA-binding	CATH (4.3.0)
A [auth B]	3.30.420.330	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
B [auth A]	1.10.287.10	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	S15/NS1, RNA-binding	CATH (4.3.0)
B [auth A]	3.30.420.330	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF00600	Influenza non-structural protein (NS1) (Flu_NS1)	Influenza non-structural protein (NS1)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	Nonstructural protein 1	enzyme regulator activity protein kinase inhibitor activity molecular function inhibitor activity molecular function regulator activity enzyme inhibitor activity protein kinase regulator activity protein serine/threonine kinase inhibitor activity kinase inhibitor activity kinase regulator activity RNA binding binding organic cyclic compound binding nucleic acid binding	symbiont-mediated perturbation of host cellular process biological process involved in interspecies interaction between organisms symbiont-mediated suppression of host PKR/eIFalpha signaling symbiont-mediated perturbation of host translation biological process involved in interaction with host biological process involved in symbiotic interaction symbiont-mediated suppression of host signal transduction pathway symbiont-mediated suppression of host-directed shutoff of host translation modulation by symbiont of host process symbiont-mediated perturbation of host gene expression cellular process symbiont-mediated perturbation of host signal transduction pathway modulation of process of another organism symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity symbiont-mediated perturbation of host cellular process biological process involved in interspecies interaction between organisms symbiont-mediated suppression of host PKR/eIFalpha signaling symbiont-mediated perturbation of host translation biological process involved in interaction with host biological process involved in symbiotic interaction symbiont-mediated suppression of host signal transduction pathway symbiont-mediated suppression of host-directed shutoff of host translation modulation by symbiont of host process symbiont-mediated perturbation of host gene expression cellular process symbiont-mediated perturbation of host signal transduction pathway modulation of process of another organism symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity response to stimulus symbiont-mediated suppression of host pathogen-associated molecular pattern receptor signaling pathway response to biotic stimulus symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response 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 symbiont-mediated perturbation of host defense response response to host defenses 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 symbiont-mediated suppression of cytoplasmic pattern recognition receptor signaling pathway symbiont-mediated suppression of host mRNA processing symbiont-mediated suppression of host gene expression symbiont-mediated suppression of host type I interferon-mediated signaling pathway symbiont-mediated suppression of host interferon-mediated signaling pathway	host intracellular membrane-bounded organelle host cellular component host intracellular part host cell part host intracellular region cellular anatomical entity host cell nucleus host intracellular organelle host cell cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR038064	Influenza A virus NS1, effector domain-like superfamily	Homologous Superfamily
A [auth B], B [auth A]	IPR009068	uS15/NS1, RNA-binding domain superfamily	Homologous Superfamily
A [auth B], B [auth A]	IPR000256	Influenza A virus NS1 protein	Family
A [auth B], B [auth A]	IPR004208	Influenza non-structural protein (NS1)	Family

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 R01GM133198.