Annotations: 3PIV

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Interferon	e3pivB1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: Interferon	ECOD (1.6)
A	Interferon	e3pivA1	A: alpha bundles	X: Ferritin/Heme oxygenase/4-helical cytokines	H: 4-helical cytokines (From Topology)	T: 4-helical cytokines	F: Interferon	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)
A	1.20.1250.10	Mainly Alpha	Up-down Bundle	Growth Hormone	Chain: A	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Interferon	protein binding binding signaling receptor binding cytokine receptor binding molecular function activator activity molecular function regulator activity cytokine activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity	regulation of defense response regulation of response to biotic stimulus regulation of biological process biological process involved in interspecies interaction between organisms response to stimulus regulation of response to external stimulus defense response response to other organism biological regulation response to external stimulus response to biotic stimulus regulation of defense response to virus defense response to virus regulation of response to stimulus response to stress regulation of defense response regulation of response to biotic stimulus regulation of biological process biological process involved in interspecies interaction between organisms response to stimulus regulation of response to external stimulus defense response response to other organism biological regulation response to external stimulus response to biotic stimulus regulation of defense response to virus defense response to virus regulation of response to stimulus response to stress regulation of response to stress regulation of defense response to virus by host response to external biotic stimulus response to virus immune response immune system process defense response to bacterium response to bacterium response to chemical response to arsenic-containing substance response to dsRNA response to nitrogen compound response to exogenous dsRNA	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily
A, B	IPR000471	Interferon alpha/beta/delta	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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.