Annotations: 1AU7

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
D [auth B]	d1au7b1	All alpha proteins	DNA/RNA-binding 3-helical bundle	Homeodomain-like	Homeodomain	Pit-1 POU homeodomain	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
D [auth B]	d1au7b2	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	POU-specific domain	Pit-1	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
C [auth A]	d1au7a1	All alpha proteins	DNA/RNA-binding 3-helical bundle	Homeodomain-like	Homeodomain	Pit-1 POU homeodomain	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
C [auth A]	d1au7a2	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	POU-specific domain	Pit-1	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D [auth B]	SCOP2B Superfamily	Homeodomain-like	8017638	3000001	SCOP2B (2022-06-29)
D [auth B]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8003751	3000119	SCOP2B (2022-06-29)
C [auth A]	SCOP2 Family	Homeodomain	8002381	4000291	SCOP2 (2022-06-29)
C [auth A]	SCOP2 Family	POU-specific domain	8002382	4000284	SCOP2 (2022-06-29)
C [auth A]	SCOP2 Superfamily	Homeodomain-like	8017638	3000001	SCOP2 (2022-06-29)
C [auth A]	SCOP2 Superfamily	lambda C1 repressor DNA-binding domain-like	8003751	3000119	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)
D [auth B]	Actin	e1au7B3	A: a/b three-layered sandwiches	X: Fusion glycoprotein F2	H: RIFT-related	T: double psi	F: Actin	ECOD (v294.1)
C [auth A]	TetR_N	e1au7A3	A: a/b three-layered sandwiches	X: Fusion glycoprotein F2	H: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase	T: MoeA-I/Ornithine decarboxylase-C/Reverse ferredoxin-like domain in RNA-polymerase	F: TetR_N	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
D [auth B]	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
D [auth B]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)
C [auth A]	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
C [auth A]	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth A], D [auth B]	PF00157	Pou domain - N-terminal to homeobox domain (Pou)	Pou domain - N-terminal to homeobox domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth A], D [auth B]	PROTEIN PIT-1	RNA binding binding lncRNA binding nucleic acid binding transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding protein binding DNA-binding transcription factor binding DNA binding sequence-specific DNA binding double-stranded DNA binding RNA polymerase II transcription regulatory region sequence-specific DNA binding cis-regulatory region sequence-specific DNA binding sequence-specific double-stranded DNA binding RNA binding binding lncRNA binding nucleic acid binding transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding protein binding DNA-binding transcription factor binding DNA binding sequence-specific DNA binding double-stranded DNA binding RNA polymerase II transcription regulatory region sequence-specific DNA binding cis-regulatory region sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding transcription regulatory region nucleic acid binding RNA polymerase II cis-regulatory region sequence-specific DNA binding chromatin binding transcription regulator activity DNA-binding transcription factor activity DNA-binding transcription factor activity, RNA polymerase II-specific DNA-binding transcription activator activity, RNA polymerase II-specific DNA-binding transcription activator activity	developmental process cellular developmental process cell differentiation cellular process cell fate specification cell fate commitment multicellular organismal process head development forebrain development endocrine system development pituitary gland development gland development animal organ development brain development developmental process cellular developmental process cell differentiation cellular process cell fate specification cell fate commitment multicellular organismal process head development forebrain development endocrine system development pituitary gland development gland development animal organ development brain development diencephalon development nervous system development multicellular organism development central nervous system development anatomical structure development adenohypophysis development system development hemopoiesis B cell activation cell activation cell development mononuclear cell differentiation lymphocyte differentiation lymphocyte activation leukocyte activation B cell differentiation immune system process leukocyte differentiation regulation of biological process cell population proliferation regulation of cellular process positive regulation of cell population proliferation regulation of cell population proliferation biological regulation positive regulation of biological process positive regulation of cellular process determination of adult lifespan RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process positive regulation of DNA-templated transcription positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of multicellular organism growth regulation of growth regulation of developmental growth regulation of developmental process developmental growth growth positive regulation of multicellular organism growth positive regulation of developmental process multicellular organism growth positive regulation of growth positive regulation of multicellular organismal process regulation of multicellular organismal process positive regulation of developmental growth cellular response to stimulus regulation of signaling cell surface receptor signaling pathway response to stimulus signaling regulation of signal transduction insulin-like growth factor receptor signaling pathway cell surface receptor protein tyrosine kinase signaling pathway cell communication regulation of response to stimulus regulation of insulin-like growth factor receptor signaling pathway regulation of cell communication signal transduction enzyme-linked receptor protein signaling pathway transcription by RNA polymerase II regulation of transcription by RNA polymerase II somatotropin secreting cell differentiation negative regulation of biological process negative regulation of RNA biosynthetic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process negative regulation of macromolecule metabolic process negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of RNA metabolic process regulation of inositol phosphate biosynthetic process regulation of inositol trisphosphate biosynthetic process alcohol metabolic process inositol phosphate metabolic process positive regulation of phosphate metabolic process positive regulation of inositol trisphosphate biosynthetic process regulation of small molecule metabolic process phosphate-containing compound metabolic process polyol biosynthetic process inositol trisphosphate metabolic process small molecule metabolic process phosphorus metabolic process regulation of carbohydrate metabolic process carbohydrate metabolic process polyol metabolic process regulation of alcohol biosynthetic process positive regulation of phosphorus metabolic process small molecule biosynthetic process inositol trisphosphate biosynthetic process carbohydrate biosynthetic process positive regulation of inositol phosphate biosynthetic process organophosphate metabolic process organophosphate biosynthetic process inositol phosphate biosynthetic process alcohol biosynthetic process regulation of phosphorus metabolic process regulation of carbohydrate biosynthetic process positive regulation of carbohydrate metabolic process positive regulation of small molecule metabolic process positive regulation of alcohol biosynthetic process somatotropin secreting cell development positive regulation of transcription by RNA polymerase II	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen cellular anatomical structure intracellular anatomical structure cytoplasm cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen membraneless organelle intracellular membraneless organelle chromatin chromosome
B [auth D]	DNA (5'-D(CPTPTPCPCPTPCPAPTPGPTPAPTPAPTPAPC PAPTPGPAPGP* GP*A)-3')	-	-	-
A [auth C]	CONSENSUS DNA 25-MER	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A], D [auth B]	IPR000327	POU-specific domain	Domain
C [auth A], D [auth B]	IPR013847	POU domain	Domain
C [auth A], D [auth B]	IPR017970	Homeobox, conserved site	Conserved Site
C [auth A], D [auth B]	IPR009057	Homedomain-like superfamily	Homologous Superfamily
C [auth A], D [auth B]	IPR050255	POU domain transcription factor	Family
C [auth A], D [auth B]	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily
C [auth A], D [auth B]	IPR001356	Homeodomain	Domain

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.