Annotations: 1DU6

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1du6a1	All alpha proteins	DNA/RNA-binding 3-helical bundle	Homeodomain-like	Homeodomain	pbx1	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1du6a2	Artifacts	Tags	Tags	Tags	N-terminal Tags	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)
A	SCOP2B Superfamily	Homeodomain-like	8057598	3000001	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	Homeobox_KN	e1du6A2	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Homeobox_KN	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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
A	PF05920	Homeobox KN domain (Homeobox_KN)	Homeobox KN domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	HOMEOBOX PROTEIN PBX1	transcription factor binding transcription coregulator binding transcription corepressor binding protein binding binding DNA binding sequence-specific DNA binding double-stranded DNA binding nucleic acid 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 organic cyclic compound binding transcription factor binding transcription coregulator binding transcription corepressor binding protein binding binding DNA binding sequence-specific DNA binding double-stranded DNA binding nucleic acid 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 organic cyclic compound binding transcription regulatory region nucleic acid binding RNA polymerase II cis-regulatory region sequence-specific DNA binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity DNA-binding transcription factor binding DNA-binding transcription activator activity, RNA polymerase II-specific DNA-binding transcription activator activity	multicellular organismal process regulation of cellular process cellular developmental process regulation of developmental process negative regulation of biological process regulation of cell differentiation neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development negative regulation of cellular process negative regulation of cell differentiation system development multicellular organismal process regulation of cellular process cellular developmental process regulation of developmental process negative regulation of biological process regulation of cell differentiation neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development negative regulation of cellular process negative regulation of cell differentiation system development developmental process regulation of biological process negative regulation of developmental process biological regulation nervous system development generation of neurons cellular process negative regulation of neuron differentiation regulation of neuron differentiation head development central nervous system development animal organ development brain development immune system development gland development hematopoietic or lymphoid organ development thymus development immune system process anatomical structure morphogenesis animal organ morphogenesis biosynthetic process steroid metabolic process lipid biosynthetic process primary metabolic process metabolic process steroid biosynthetic process lipid metabolic process cell population proliferation ossification regulation of multicellular organismal process regulation of ossification urogenital system development regulation of stem cell proliferation positive regulation of cell population proliferation positive regulation of biological process positive regulation of stem cell proliferation stem cell proliferation regulation of cell population proliferation positive regulation of cellular process limb development appendage development embryonic limb morphogenesis embryonic morphogenesis embryonic appendage morphogenesis embryo development appendage morphogenesis limb morphogenesis embryonic organ development hemopoiesis cell development embryonic hemopoiesis spleen development adrenal gland development endocrine system development reproductive process sex differentiation developmental process involved in reproduction embryo development ending in birth or egg hatching skeletal system development chordate embryonic development embryonic skeletal system development sensory organ development eye development visual system development sensory system development cellular biosynthetic process RNA metabolic process regulation of primary metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic 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 regulation of biosynthetic process cellular 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 regulation of gene expression regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process cell activation mononuclear cell differentiation natural killer cell activation lymphocyte differentiation lymphocyte activation leukocyte activation natural killer cell differentiation leukocyte differentiation mesonephric epithelium development kidney epithelium development nephron morphogenesis branching morphogenesis of an epithelial tube nephron tubule morphogenesis nephron epithelium morphogenesis nephron tubule development renal system development ureteric bud morphogenesis tube morphogenesis branching involved in ureteric bud morphogenesis renal tubule development epithelial tube morphogenesis nephron development nephron epithelium development ureteric bud development epithelium development tube development mesonephros development morphogenesis of an epithelium tissue development tissue morphogenesis kidney morphogenesis morphogenesis of a branching structure mesonephric tubule morphogenesis kidney development mesonephric tubule development renal tubule morphogenesis morphogenesis of a branching epithelium cell cycle G2/M phase transition mitotic cell cycle process G2/M transition of mitotic cell cycle cell cycle phase transition cell cycle mitotic cell cycle cell cycle process mitotic cell cycle phase transition positive regulation of DNA-templated transcription positive regulation of cellular metabolic process 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 nucleobase-containing compound metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process anterior/posterior pattern specification pattern specification process regionalization neuron development regulation of cell cycle phase transition regulation of mitotic cell cycle positive regulation of mitotic cell cycle phase transition positive regulation of cell cycle process positive regulation of mitotic cell cycle regulation of cell cycle positive regulation of G2/M transition of mitotic cell cycle regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process regulation of cell cycle G2/M phase transition positive regulation of cell cycle G2/M phase transition positive regulation of cell cycle regulation of mitotic cell cycle phase transition positive regulation of cell cycle phase transition proximal/distal pattern formation	RNA polymerase II transcription regulator complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle organelle cytoplasm membrane-enclosed lumen intracellular organelle lumen RNA polymerase II transcription regulator complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus nuclear protein-containing complex transcription regulator complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle organelle cytoplasm membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR050224	Three Amino acid Loop Extension (TALE) homeobox	Family
A	IPR017970	Homeobox, conserved site	Conserved Site
A	IPR008422	KN homeodomain	Domain
A	IPR005542	PBX, PBC domain	Domain
A	IPR009057	Homedomain-like superfamily	Homologous Superfamily
A	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.