Annotations: 1LFU

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth P]	d1lfup_	All alpha proteins	DNA/RNA-binding 3-helical bundle	Homeodomain-like	Homeodomain	pbx1	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)
C [auth P]	SCOP2 Family	Homeodomain	8002361	4000291	SCOP2 (2022-06-29)
C [auth P]	SCOP2 Superfamily	Homeodomain-like	8057598	3000001	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)
C [auth P]	PF05920	e1lfuP1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: PF05920	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth P]	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 P]	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	5'-D(GPCPGPCPAPTPGPAPTPTPGPCPCPC)-3'	-	-	-
B	5'-D(GPGPGPCPAPAPTPCPAPTPGPCPGPC)-3'	-	-	-
C [auth P]	homeobox protein PBX1	DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding transcription regulatory region nucleic acid binding transcription factor binding transcription coregulator binding protein binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding transcription regulatory region nucleic acid binding transcription factor binding transcription coregulator binding protein binding 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 transcription corepressor 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 DNA-binding transcription factor binding	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 cell population proliferation 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 embryonic organ development embryo development hemopoiesis cell development embryonic hemopoiesis immune system development spleen development immune system process hematopoietic or lymphoid organ development embryo development ending in birth or egg hatching skeletal system development chordate embryonic development embryonic skeletal system development 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 animal organ morphogenesis 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 anatomical structure 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 macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of transcription by RNA polymerase II positive regulation of nucleobase-containing compound metabolic process cellular metabolic process primary metabolic process regulation of cellular metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of DNA-templated transcription cellular biosynthetic process RNA metabolic process positive regulation of cellular metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process positive regulation of biosynthetic process regulation of RNA biosynthetic process regulation of biosynthetic 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 positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process gland development thymus development steroid metabolic process lipid biosynthetic process steroid biosynthetic process lipid metabolic process ossification regulation of multicellular organismal process regulation of ossification urogenital system development limb development appendage development embryonic limb morphogenesis embryonic morphogenesis embryonic appendage morphogenesis appendage morphogenesis limb morphogenesis adrenal gland development endocrine system development reproductive process sex differentiation developmental process involved in reproduction sensory organ development eye development visual system development sensory system development 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	protein-containing complex transcription regulator complex intracellular anatomical structure cytoplasm cellular anatomical entity RNA polymerase II transcription regulator complex membrane-bounded organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle organelle membrane-enclosed lumen intracellular organelle lumen protein-containing complex transcription regulator complex intracellular anatomical structure cytoplasm cellular anatomical entity RNA polymerase II transcription regulator complex membrane-bounded organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle organelle membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth P]	IPR009057	Homeobox-like domain superfamily	Homologous Superfamily
C [auth P]	IPR005542	PBX, PBC domain	Domain
C [auth P]	IPR008422	Homeobox KN domain	Domain
C [auth P]	IPR001356	Homeobox domain	Domain
C [auth P]	IPR017970	Homeobox, conserved site	Conserved Site

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.