Annotations: 1BG1

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B [auth A]	d1bg1a1	All alpha proteins	STAT-like	STAT	STAT	STAT3b	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth A]	d1bg1a2	All beta proteins	Common fold of diphtheria toxin/transcription factors/cytochrome f	p53-like transcription factors	STAT DNA-binding domain	STAT3b	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B [auth A]	d1bg1a3	Alpha and beta proteins (a+b)	SH2-like	SH2 domain	SH2 domain	STAT3b	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth A]	SCOP2 Family	SH2 domain	8023326	4001650	SCOP2 (2022-06-29)
B [auth A]	SCOP2 Family	STAT	8025201	4000985	SCOP2 (2022-06-29)
B [auth A]	SCOP2 Family	STAT DNA-binding domain	8027862	4001853	SCOP2 (2022-06-29)
B [auth A]	SCOP2 Superfamily	SH2 domain	8035706	3000197	SCOP2 (2022-06-29)
B [auth A]	SCOP2 Superfamily	STAT	8037580	3000357	SCOP2 (2022-06-29)
B [auth A]	SCOP2 Superfamily	p53-like transcription factors	8040241	3000758	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth A]	STAT_bind_N	e1bg1A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Common fold of diphtheria toxin/transcription factors/cytochrome f	F: STAT_bind_N	ECOD (1.6)
B [auth A]	STAT_bind_C	e1bg1A2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: STAT_bind_C	ECOD (1.6)
B [auth A]	STAT_alpha	e1bg1A3	A: alpha bundles	X: STAT-like	H: STAT (From Topology)	T: STAT	F: STAT_alpha	ECOD (1.6)
B [auth A]	SH2	e1bg1A4	A: a+b two layers	X: SH2 (From Topology)	H: SH2 (From Topology)	T: SH2	F: SH2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth A]	1.20.1050.20	Mainly Alpha	Up-down Bundle	Glutathione S-transferase Yfyf (Class Pi)	Chain A, domain 2	CATH (4.3.0)
B [auth A]	2.60.40.630	Mainly Beta	Sandwich	Immunoglobulin-like	STAT transcription factor, DNA-binding domain	CATH (4.3.0)
B [auth A]	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)
B [auth A]	3.30.505.10	Alpha Beta	2-Layer Sandwich	SHC Adaptor Protein	SH2 domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth A]	PF00017	SH2 domain (SH2)	SH2 domain		Domain
B [auth A]	PF21354	Signal transducer and activator of transcription, linker domain (STAT_linker)	Signal transducer and activator of transcription, linker domain	This domain is found in Signal transducer and activator of transcription proteins (STAT) from animals. These proteins are activated in response to extracellular signals such as cytokines, growth factors and hormonal factors and translocate to the nuc ...	This domain is found in Signal transducer and activator of transcription proteins (STAT) from animals. These proteins are activated in response to extracellular signals such as cytokines, growth factors and hormonal factors and translocate to the nucleus, where they bind to specific promoter sequences in target genes. This entry represents the all-helical linker domain that connects the DNA binding domain (Pfam:PF02864) and the SH2 domain (Pfam:PF00017) [1-5].	Domain
B [auth A]	PF01017	STAT transcription factor, coiled-coil domain (STAT_alpha)	STAT transcription factor, coiled-coil domain	STAT proteins (Signal Transducers and Activators of Transcription) are a family of transcription factors that are specifically activated to regulate gene transcription when cells encounter cytokines and growth factors. STATs share 6 structurally and ...	STAT proteins (Signal Transducers and Activators of Transcription) are a family of transcription factors that are specifically activated to regulate gene transcription when cells encounter cytokines and growth factors. STATs share 6 structurally and functionally conserved domains including: an N-terminal domain (ND) that strengthens interactions between STAT dimers on adjacent DNA-binding sites; a coiled-coil STAT domain (CCD) that is implicated in protein-protein interactions; a DNA-binding domain (DBD) with an immunoglobulin-like fold similar to p53 tumour suppressor protein; an EF-hand-like linker domain connecting the DNA-binding and SH2 domains; an SH2 domain that acts as a phosphorylation-dependent switch to control receptor recognition and DNA-binding; and a C-terminal transactivation domain. This entry represents the coiled-coil domain (CCD)	Domain
B [auth A]	PF02864	STAT protein, DNA binding domain (STAT_bind)	STAT protein, DNA binding domain	STAT proteins (Signal Transducers and Activators of Transcription) are a family of transcription factors that are specifically activated to regulate gene transcription when cells encounter cytokines and growth factors. This family represents the DNA ...	STAT proteins (Signal Transducers and Activators of Transcription) are a family of transcription factors that are specifically activated to regulate gene transcription when cells encounter cytokines and growth factors. This family represents the DNA binding domain of STAT, which has an ig-like fold. STAT proteins also include an SH2 domain Pfam:PF00017.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B]	DNA (5'-D(TPGPCPAPTPTPTPCPCPCPGPTPAPAPAPTPCPT)-3')	-	-	-
B [auth A]	PROTEIN (TRANSCRIPTION FACTOR STAT3B)	RNA binding binding lncRNA binding nucleic acid binding primary miRNA binding sequence-specific DNA binding DNA binding protein phosphatase binding phosphatase binding protein binding enzyme binding protein dimerization activity DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity RNA binding binding lncRNA binding nucleic acid binding primary miRNA binding sequence-specific DNA binding DNA binding protein phosphatase binding phosphatase binding protein binding enzyme binding protein dimerization activity DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity DNA-binding transcription activator activity, RNA polymerase II-specific DNA-binding transcription activator activity signaling receptor binding protein-macromolecule adaptor activity molecular adaptor activity signaling adaptor activity identical protein binding protein homodimerization activity kinase binding protein kinase binding chromatin binding chromatin DNA binding transcription factor binding DNA-binding transcription factor binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding double-stranded DNA binding transcription regulatory region nucleic acid binding nuclear receptor activity molecular transducer activity signaling receptor activity ligand-modulated transcription factor activity RNA polymerase II-specific DNA-binding transcription factor binding RNA polymerase II transcription regulatory region sequence-specific DNA binding cis-regulatory region sequence-specific DNA binding RNA polymerase II cis-regulatory region sequence-specific DNA binding molecular sequestering activity RNA sequestering activity modification-dependent protein binding acetylation-dependent protein binding	regulation of defense response response to stimulus regulation of response to external stimulus negative regulation of inflammatory response negative regulation of biological process regulation of response to wounding response to stress regulation of response to stress response to wounding regulation of biological process regulation of inflammatory response to wounding defense response negative regulation of response to stimulus biological regulation regulation of defense response response to stimulus regulation of response to external stimulus negative regulation of inflammatory response negative regulation of biological process regulation of response to wounding response to stress regulation of response to stress response to wounding regulation of biological process regulation of inflammatory response to wounding defense response negative regulation of response to stimulus biological regulation response to external stimulus regulation of inflammatory response negative regulation of response to wounding negative regulation of inflammatory response to wounding regulation of response to stimulus negative regulation of response to external stimulus inflammatory response to wounding negative regulation of defense response inflammatory response negative regulation of stem cell differentiation developmental process regulation of cellular process cellular developmental process regulation of developmental process negative regulation of developmental process regulation of cell differentiation stem cell differentiation cell differentiation regulation of stem cell differentiation negative regulation of cellular process cellular process negative regulation of cell differentiation ribonucleotide catabolic process pyridine nucleotide catabolic process negative regulation of small molecule metabolic process negative regulation of glycolytic process oxoacid metabolic process carbohydrate catabolic process organophosphate catabolic process carbohydrate derivative metabolic process regulation of generation of precursor metabolites and energy nucleoside phosphate catabolic process organic acid metabolic process negative regulation of ATP metabolic process regulation of primary metabolic process regulation of ATP metabolic process nucleobase-containing compound metabolic process regulation of purine nucleotide catabolic process negative regulation of nucleotide metabolic process regulation of small molecule metabolic process glycolytic process regulation of nucleotide metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process pyridine-containing compound metabolic process small molecule metabolic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process purine ribonucleotide catabolic process phosphorus metabolic process pyridine nucleotide metabolic process negative regulation of carbohydrate metabolic process nucleoside phosphate metabolic process nicotinamide nucleotide metabolic process pyruvate metabolic process regulation of carbohydrate catabolic process negative regulation of metabolic process negative regulation of purine nucleotide catabolic process purine nucleoside diphosphate metabolic process primary metabolic process purine-containing compound catabolic process nucleotide metabolic process regulation of purine nucleotide metabolic process nucleobase-containing compound catabolic process nucleoside diphosphate metabolic process purine nucleoside diphosphate catabolic process nucleoside diphosphate catabolic process regulation of nucleotide catabolic process metabolic process regulation of phosphorus metabolic process nucleoside triphosphate metabolic process monocarboxylic acid metabolic process purine ribonucleotide metabolic process regulation of metabolic process pyridine-containing compound catabolic process ribose phosphate metabolic process catabolic process ATP metabolic process negative regulation of purine nucleotide metabolic process negative regulation of phosphate metabolic process purine nucleotide metabolic process ribonucleotide metabolic process nucleobase-containing small molecule metabolic process purine ribonucleoside triphosphate metabolic process ribonucleoside diphosphate metabolic process ribonucleoside diphosphate catabolic process regulation of carbohydrate metabolic process nucleotide catabolic process ribonucleoside triphosphate metabolic process negative regulation of nucleotide catabolic process negative regulation of catabolic process purine nucleoside triphosphate metabolic process purine nucleotide catabolic process carbohydrate metabolic process carbohydrate derivative catabolic process ADP catabolic process carboxylic acid metabolic process regulation of catabolic process generation of precursor metabolites and energy regulation of glycolytic process purine-containing compound metabolic process ADP metabolic process organophosphate metabolic process negative regulation of phosphorus metabolic process purine ribonucleoside diphosphate metabolic process purine ribonucleoside diphosphate catabolic process positive regulation of DNA-templated transcription positive regulation of biological process RNA metabolic process positive regulation of miRNA transcription positive regulation of miRNA metabolic process positive regulation of macromolecule biosynthetic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process positive regulation of metabolic process regulation of RNA metabolic process miRNA transcription positive regulation of biosynthetic process regulation of miRNA metabolic process positive regulation of macromolecule metabolic process miRNA metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process positive regulation of nucleobase-containing compound metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process regulation of gene expression biosynthetic process positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of miRNA transcription regulation of multicellular organism growth multicellular organismal process regulation of growth regulation of developmental growth developmental growth growth multicellular organism growth regulation of multicellular organismal process interleukin-15-mediated signaling pathway cellular response to stimulus cell surface receptor signaling pathway signaling response to cytokine cellular response to interleukin-15 cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular response to cytokine stimulus signal transduction response to interleukin-15 positive regulation of interleukin-8 production cytokine production regulation of cytokine production interleukin-8 production positive regulation of gene expression positive regulation of multicellular organismal process positive regulation of cytokine production regulation of interleukin-8 production cell surface receptor signaling pathway via STAT cell surface receptor signaling pathway via JAK-STAT cell population proliferation positive regulation of cell population proliferation endothelial cell proliferation positive regulation of epithelial cell proliferation regulation of vascular endothelial cell proliferation regulation of endothelial cell proliferation regulation of cell population proliferation positive regulation of endothelial cell proliferation regulation of epithelial cell proliferation vascular endothelial cell proliferation epithelial cell proliferation positive regulation of vascular endothelial cell proliferation mRNA transcription by RNA polymerase II mRNA transcription mRNA metabolic process transcription by RNA polymerase II interleukin-10 production regulation of interleukin-10 production positive regulation of interleukin-10 production autophagy regulation of autophagy negative regulation of autophagy process utilizing autophagic mechanism somatic stem cell population maintenance maintenance of cell number stem cell population maintenance cellular response to leptin stimulus cellular response to endogenous stimulus response to hormone response to leptin cellular response to hormone stimulus leptin-mediated signaling pathway response to endogenous stimulus cellular response to chemical stimulus regulation of behavior behavior feeding behavior regulation of feeding behavior response to interleukin-9 interleukin-9-mediated signaling pathway cellular response to interleukin-9 cellular response to growth factor stimulus cell surface receptor protein serine/threonine kinase signaling pathway cellular response to transforming growth factor beta stimulus response to transforming growth factor beta transforming growth factor beta receptor signaling pathway response to growth factor transforming growth factor beta receptor superfamily signaling pathway enzyme-linked receptor protein signaling pathway interleukin-23-mediated signaling pathway sexual reproduction reproductive process eating behavior multicellular organismal-level homeostasis homeostatic process energy homeostasis interleukin-6-mediated signaling pathway response to interleukin-6 cellular response to interleukin-6 interleukin-10-mediated signaling pathway positive regulation of locomotion regulation of cell motility positive regulation of cell migration regulation of locomotion positive regulation of cell motility regulation of cell migration cell migration cell motility locomotion temperature homeostasis 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 negative regulation of locomotion negative regulation of neuron migration regulation of neuron migration neurogenesis multicellular organism development anatomical structure development negative regulation of cell migration system development neuron migration nervous system development generation of neurons negative regulation of cell motility regulation of tumor necrosis factor production positive regulation of tumor necrosis factor superfamily cytokine production tumor necrosis factor superfamily cytokine production positive regulation of tumor necrosis factor production tumor necrosis factor production regulation of tumor necrosis factor superfamily cytokine production response to lipid response to estradiol response to oxygen-containing compound cellular response to nitrogen compound response to peptide hormone cellular response to growth hormone stimulus cell surface receptor protein tyrosine kinase signaling pathway growth hormone receptor signaling pathway via JAK-STAT growth hormone receptor signaling pathway cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound response to growth hormone cellular response to interleukin-17 response to interleukin-17 protein localization establishment of protein localization cellular localization nitrogen compound transport nucleocytoplasmic transport transport nuclear transport intracellular transport protein localization to nucleus establishment of localization localization import into nucleus establishment of protein localization to organelle protein transport cellular macromolecule localization macromolecule localization protein localization to organelle establishment of localization in cell protein import into nucleus intracellular protein transport interleukin-1 production regulation of interleukin-1 beta production positive regulation of interleukin-1 beta production positive regulation of interleukin-1 production regulation of interleukin-1 production interleukin-1 beta production acute-phase response acute inflammatory response cell development regulation of cell development positive regulation of developmental process positive regulation of cell differentiation regulation of immune system process myeloid cell homeostasis erythrocyte homeostasis regulation of multicellular organismal development hemopoiesis regulation of myeloid cell differentiation erythrocyte differentiation regulation of erythrocyte differentiation positive regulation of erythrocyte differentiation myeloid cell differentiation immune system process positive regulation of myeloid cell differentiation regulation of hemopoiesis homeostasis of number of cells phosphorylation regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II chemical homeostasis glucose homeostasis carbohydrate homeostasis post-transcriptional regulation of gene expression RNA processing regulation of miRNA processing primary miRNA processing miRNA-mediated post-transcriptional gene silencing negative regulation of gene expression negative regulation of macromolecule biosynthetic process negative regulation of miRNA-mediated gene silencing post-transcriptional gene silencing miRNA processing negative regulation of post-transcriptional gene silencing negative regulation of primary miRNA processing regulation of miRNA-mediated gene silencing negative regulation of post-transcriptional gene silencing by regulatory ncRNA regulation of regulatory ncRNA processing regulation of gene silencing by regulatory ncRNA regulation of post-transcriptional gene silencing by regulatory ncRNA negative regulation of miRNA processing negative regulation of macromolecule metabolic process regulation of primary miRNA processing negative regulation of gene silencing by regulatory ncRNA regulatory ncRNA-mediated post-transcriptional gene silencing regulatory ncRNA processing regulatory ncRNA-mediated gene silencing regulation of post-transcriptional gene silencing negative regulation of biosynthetic process regulation of vascular endothelial growth factor production vascular endothelial growth factor production positive regulation of vascular endothelial growth factor production adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains immune response adaptive immune response T-helper 17 type immune response intracellular signal transduction intracellular signaling cassette phosphatidylinositol 3-kinase/protein kinase B signal transduction interleukin-2-mediated signaling pathway cellular response to interleukin-2 response to interleukin-2 gliogenesis glial cell differentiation radial glial cell differentiation astrocyte differentiation central nervous system development negative regulation of cell population proliferation angiogenesis regulation of vasculature development tube morphogenesis regulation of anatomical structure morphogenesis blood vessel development blood vessel morphogenesis tube development positive regulation of angiogenesis vasculature development circulatory system development anatomical structure morphogenesis positive regulation of vasculature development regulation of angiogenesis anatomical structure formation involved in morphogenesis sensory organ development photoreceptor cell differentiation visual system development retina development in camera-type eye neural retina development eye morphogenesis neuron differentiation eye photoreceptor cell differentiation animal organ morphogenesis sensory system development camera-type eye morphogenesis eye development animal organ development camera-type eye photoreceptor cell differentiation retina morphogenesis in camera-type eye sensory organ morphogenesis camera-type eye development retinal rod cell differentiation positive regulation of cell communication positive regulation of signal transduction regulation of signal transduction positive regulation of response to stimulus regulation of signaling Notch signaling pathway regulation of Notch signaling pathway regulation of cell communication positive regulation of Notch signaling pathway positive regulation of signaling cell cycle regulation of cell cycle interleukin-11-mediated signaling pathway CD4-positive or CD8-positive, alpha-beta T cell lineage commitment mononuclear cell differentiation lymphocyte activation lymphocyte differentiation cell activation involved in immune response CD4-positive, alpha-beta T cell differentiation CD4-positive, alpha-beta T cell differentiation involved in immune response alpha-beta T cell differentiation involved in immune response leukocyte activation alpha-beta T cell differentiation T cell activation involved in immune response alpha-beta T cell activation involved in immune response T cell activation CD4-positive, alpha-beta T cell activation leukocyte activation involved in immune response alpha-beta T cell activation T cell differentiation CD4-positive, alpha-beta T cell lineage commitment lymphocyte activation involved in immune response T-helper cell differentiation alpha-beta T cell lineage commitment cell activation T-helper cell lineage commitment T cell differentiation involved in immune response T cell lineage commitment immune effector process T-helper 17 cell lineage commitment positive T cell selection T cell selection T-helper 17 cell differentiation cell fate commitment leukocyte differentiation	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane protein-containing complex transcription regulator complex intracellular organelle organelle membraneless organelle intracellular membraneless organelle chromatin cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane protein-containing complex transcription regulator complex intracellular organelle organelle membraneless organelle intracellular membraneless organelle chromatin chromosome RNA polymerase II transcription regulator complex membrane-bounded organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth A]	IPR048988	Signal transducer and activator of transcription, linker domain	Domain
B [auth A]	IPR013800	STAT transcription factor, all-alpha domain	Domain
B [auth A]	IPR035855	STAT3, SH2 domain	Domain
B [auth A]	IPR036860	SH2 domain superfamily	Homologous Superfamily
B [auth A]	IPR013799	STAT transcription factor, protein interaction	Domain
B [auth A]	IPR015988	STAT transcription factor, coiled coil	Homologous Superfamily
B [auth A]	IPR036535	STAT transcription factor, N-terminal domain superfamily	Homologous Superfamily
B [auth A]	IPR000980	SH2 domain	Domain
B [auth A]	IPR001217	Transcription factor STAT	Family
B [auth A]	IPR008967	p53-like transcription factor, DNA-binding domain superfamily	Homologous Superfamily
B [auth A]	IPR013801	STAT transcription factor, DNA-binding	Domain
B [auth A]	IPR012345	STAT transcription factor, DNA-binding, N-terminal	Homologous Superfamily

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
B [auth A]	PTR	Parent Component: TYR RESID: AA0039 PSI-MOD : O4'-phospho-L-tyrosine MOD:00048

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.