3QU6 | pdb_00003qu6

Crystal structure of IRF-3 DBD free form

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
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3qu6a_	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Interferon regulatory factor	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d3qu6c_	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Interferon regulatory factor	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d3qu6b_	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Interferon regulatory factor	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Winged helix DNA-binding domain	8057688	3000034	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Winged helix DNA-binding domain	8057688	3000034	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Winged helix DNA-binding domain	8057688	3000034	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	IRF	e3qu6A1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: IRF	ECOD (1.6)
C	IRF	e3qu6C1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: IRF	ECOD (1.6)
B	IRF	e3qu6B1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: IRF	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
C	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
B	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF00605	Interferon regulatory factor transcription factor (IRF)	Interferon regulatory factor transcription factor	This family of transcription factors are important in the regulation of interferons in response to infection by virus and in the regulation of interferon-inducible genes. Three of the five conserved tryptophan residues bind to DNA.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	IRF3 protein	sequence-specific DNA binding DNA binding binding nucleic acid binding chromatin binding promoter-specific chromatin binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity sequence-specific double-stranded DNA binding double-stranded DNA binding DNA-binding transcription activator activity, RNA polymerase II-specific DNA-binding transcription activator activity identical protein binding sequence-specific DNA binding DNA binding binding nucleic acid binding chromatin binding promoter-specific chromatin binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity sequence-specific double-stranded DNA binding double-stranded DNA binding DNA-binding transcription activator activity, RNA polymerase II-specific DNA-binding transcription activator activity identical protein binding protein binding protein domain specific binding DNA-binding transcription repressor activity, RNA polymerase II-specific DNA-binding transcription repressor activity RNA polymerase II transcription regulatory region sequence-specific DNA binding cis-regulatory region sequence-specific DNA binding transcription cis-regulatory region binding transcription regulatory region nucleic acid binding RNA polymerase II cis-regulatory region sequence-specific DNA binding protein homodimerization activity protein dimerization activity	cellular response to stimulus cytoplasmic pattern recognition receptor signaling pathway regulation of defense response positive regulation of response to biotic stimulus regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of cellular process pattern recognition receptor signaling pathway response to stimulus regulation of response to external stimulus intracellular receptor signaling pathway signaling positive regulation of biological process response to biotic stimulus intracellular signal transduction cellular response to stimulus cytoplasmic pattern recognition receptor signaling pathway regulation of defense response positive regulation of response to biotic stimulus regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of cellular process pattern recognition receptor signaling pathway response to stimulus regulation of response to external stimulus intracellular receptor signaling pathway signaling positive regulation of biological process response to biotic stimulus intracellular signal transduction cell communication positive regulation of response to stimulus immune response-activating signaling pathway positive regulation of response to external stimulus immune response-regulating signaling pathway positive regulation of immune response regulation of response to stress response to stress innate immune response regulation of immune system process response to external biotic stimulus signal transduction positive regulation of immune system process innate immune response-activating signaling pathway regulation of biological process positive regulation of innate immune response defense response immune response response to other organism regulation of innate immune response biological regulation defense response to symbiont response to external stimulus regulation of response to stimulus immune system process defense response to other organism positive regulation of defense response activation of innate immune response regulation of immune response cellular process activation of immune response cellular response to stress DNA damage response apoptotic process cell death programmed cell death regulation of apoptotic process regulation of programmed cell death positive regulation of cell communication positive regulation of signal transduction regulation of type I interferon-mediated signaling pathway response to cytokine regulation of signal transduction interferon-mediated signaling pathway cellular response to type I interferon cellular response to cytokine stimulus regulation of response to cytokine stimulus response to chemical response to type I interferon positive regulation of type I interferon-mediated signaling pathway positive regulation of response to cytokine stimulus cytokine-mediated signaling pathway positive regulation of cellular process regulation of signaling cell surface receptor signaling pathway regulation of cytokine-mediated signaling pathway response to peptide type I interferon-mediated signaling pathway regulation of cell communication positive regulation of cytokine-mediated signaling pathway positive regulation of signaling RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression mRNA transcription mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process metabolic process macromolecule metabolic process regulation of biosynthetic process regulation of macromolecule metabolic process regulation of gene expression signal transduction involved in regulation of gene expression regulation of macromolecule biosynthetic process regulation of metabolic process MDA-5 signaling pathway defense response to virus response to virus multicellular organismal process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process cytokine production regulation of cytokine production positive regulation of macromolecule metabolic process regulation of multicellular organismal process positive regulation of type I interferon production type I interferon production positive regulation of gene expression positive regulation of multicellular organismal process positive regulation of cytokine production regulation of type I interferon production positive regulation of DNA-templated transcription regulation of primary metabolic process regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription interferon-alpha production regulation of interferon-alpha production positive regulation of interferon-alpha production positive regulation of canonical NF-kappaB signal transduction regulation of intracellular signal transduction intracellular signaling cassette positive regulation of intracellular signal transduction canonical NF-kappaB signal transduction regulation of canonical NF-kappaB signal transduction immune response-regulating cell surface receptor signaling pathway cell surface toll-like receptor signaling pathway immune response-activating cell surface receptor signaling pathway innate immune response activating cell surface receptor signaling pathway cell surface pattern recognition receptor signaling pathway toll-like receptor 4 signaling pathway response to lipid cellular response to lipopolysaccharide lipopolysaccharide-mediated signaling pathway cellular response to biotic stimulus response to bacterium response to oxygen-containing compound cellular response to molecule of bacterial origin response to lipopolysaccharide cellular response to oxygen-containing compound cellular response to chemical stimulus cellular response to lipid response to molecule of bacterial origin cellular response to nitrogen compound cellular response to dsRNA cellular response to exogenous dsRNA response to dsRNA response to nitrogen compound response to exogenous dsRNA toll-like receptor signaling pathway TRIF-dependent toll-like receptor signaling pathway MyD88-independent toll-like receptor signaling pathway regulation of interferon-beta production interferon-beta production positive regulation of interferon-beta production cGAS/STING signaling pathway antiviral innate immune response regulation of inflammatory response inflammatory response programmed necrotic cell death regulation of cytokine production involved in inflammatory response production of molecular mediator involved in inflammatory response cytokine production involved in inflammatory response positive regulation of cytokine production involved in inflammatory response macrophage apoptotic process myeloid cell apoptotic process leukocyte apoptotic process inflammatory cell apoptotic process cellular response to virus	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol intracellular organelle organelle membraneless organelle intracellular membraneless organelle chromatin chromosome membrane-bounded organelle mitochondrion intracellular membrane-bounded organelle nucleus cellular anatomical structure intracellular anatomical structure cytoplasm cytosol intracellular organelle organelle membraneless organelle intracellular membraneless organelle chromatin chromosome membrane-bounded organelle mitochondrion intracellular membrane-bounded organelle nucleus membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR019817	Interferon regulatory factor, conserved site	Conserved Site
A, B, C	IPR019471	Interferon regulatory factor-3	Domain
A, B, C	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B, C	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A, B, C	IPR017855	SMAD-like domain superfamily	Homologous Superfamily
A, B, C	IPR001346	Interferon regulatory factor, DNA-binding domain	Domain
A, B, C	IPR008984	SMAD/FHA domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C	Pharos: Q14653	herpes simplex encephalitis, susceptibility to, 7 Hashimoto thyroiditis Hodgkins lymphoma microphthalmia with limb anomalies rheumatoid arthritis systemic sclerosis Herpes encephalitis hypothyroidism myositis skin basal cell carcinoma vitiligo herpes simplex encephalitis influenza pancreatic ductal adenocarcinoma systemic lupus erythematosus

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.