Annotations: 1AU7

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
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)
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)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
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)
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)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth A]	Homeobox	e1au7A4	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Homeobox	ECOD (1.6)
C [auth A]	Pou	e1au7A3	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: Pou	ECOD (1.6)
D [auth B]	Homeobox	e1au7B4	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Homeobox	ECOD (1.6)
D [auth B]	Pou	e1au7B3	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: Pou	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)
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)

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
A [auth C]	CONSENSUS DNA 25-MER	-	-	-
B [auth D]	DNA (5'-D(CPTPTPCPCPTPCPAPTPGPTPAPTPAPTPAPC PAPTPGPAPGP* GP*A)-3')	-	-	-
C [auth A], D [auth B]	PROTEIN PIT-1	RNA binding binding organic cyclic compound 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 RNA binding binding organic cyclic compound 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 protein-containing complex 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 animal organ development gland 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 animal organ development gland 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 cell population proliferation regulation of biological process 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 cellular biosynthetic process 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 organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process cellular metabolic process primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of macromolecule metabolic process positive regulation of nucleobase-containing compound metabolic process positive regulation of RNA metabolic process positive regulation of DNA-templated transcription positive regulation of cellular metabolic process positive regulation of biosynthetic process positive regulation of RNA biosynthetic process positive regulation of cellular 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 cellular metabolic process negative regulation of RNA biosynthetic process negative regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription negative regulation of transcription by RNA polymerase II negative regulation of metabolic process negative regulation of cellular biosynthetic process negative regulation of macromolecule biosynthetic process negative regulation of RNA metabolic process negative regulation of cellular process negative regulation of macromolecule metabolic process negative regulation of biosynthetic process polyol metabolic process small molecule biosynthetic process inositol trisphosphate biosynthetic process organic hydroxy compound metabolic process alcohol metabolic process inositol phosphate metabolic process organophosphate metabolic process organophosphate biosynthetic process inositol phosphate biosynthetic process organic hydroxy compound biosynthetic process phosphate-containing compound metabolic process polyol biosynthetic process alcohol biosynthetic process inositol trisphosphate metabolic process small molecule metabolic process phosphorus metabolic process regulation of inositol phosphate biosynthetic process positive regulation of phosphate metabolic process positive regulation of inositol trisphosphate biosynthetic process regulation of small molecule metabolic process regulation of phosphate metabolic process regulation of alcohol biosynthetic process positive regulation of phosphorus metabolic process carbohydrate biosynthetic process positive regulation of inositol phosphate biosynthetic process regulation of phosphorus metabolic process positive regulation of carbohydrate metabolic process regulation of inositol trisphosphate biosynthetic process regulation of carbohydrate metabolic process carbohydrate metabolic process regulation of carbohydrate biosynthetic 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	intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen intracellular anatomical structure cytoplasm cellular anatomical entity cytosol membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen protein-containing complex protein-DNA complex intracellular non-membrane-bounded organelle chromatin chromosome non-membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A], D [auth B]	IPR001356	Homeobox domain	Domain
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]	IPR009057	Homeobox-like domain superfamily	Homologous Superfamily
C [auth A], D [auth B]	IPR017970	Homeobox, conserved site	Conserved Site
C [auth A], D [auth B]	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.