2LKX

NMR structure of the homeodomain of Pitx2 in complex with a TAATCC DNA binding site

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2lkxa1	All alpha proteins	DNA/RNA-binding 3-helical bundle	Homeodomain-like	Homeodomain	Pituitary homeobox 2	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2lkxa3	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2lkxa2	Artifacts	Tags	Tags	Tags	N-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Homeodomain	8017494	4000291	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Homeodomain-like	8057725	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)
A	Homeobox	e2lkxA1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Homeobox	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	PF00046	Homeodomain (Homeodomain)	Homeodomain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Pituitary homeobox 3	DNA-binding transcription factor activity, RNA polymerase II-specific DNA-binding transcription repressor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription repressor activity DNA-binding transcription factor 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 DNA-binding transcription factor activity, RNA polymerase II-specific DNA-binding transcription repressor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription repressor activity DNA-binding transcription factor 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 phosphoprotein binding protein binding transcription factor binding RNA polymerase II-specific DNA-binding transcription factor binding 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 ribonucleoprotein complex binding protein-containing complex binding identical protein binding protein homodimerization activity protein dimerization activity	developmental process multicellular organismal process epithelium development epidermal cell differentiation cellular developmental process epidermis development nervous system development tissue development epithelial cell differentiation hair cell differentiation generation of neurons neurogenesis multicellular organism development neuron differentiation cell differentiation developmental process multicellular organismal process epithelium development epidermal cell differentiation cellular developmental process epidermis development nervous system development tissue development epithelial cell differentiation hair cell differentiation generation of neurons neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development cellular process system development limb development appendage development animal organ development skeletal system development deltoid tuberosity development bone development heart development embryonic heart tube left/right pattern formation tube development pattern specification process embryo development embryonic heart tube development regionalization circulatory system development embryonic organ development left/right pattern formation sensory organ development eye development visual system development camera-type eye development sensory system development anatomical structure morphogenesis left/right axis specification axis specification head development prolactin secreting cell differentiation forebrain development endocrine system development pituitary gland development gland development brain development diencephalon development central nervous system development adenohypophysis development 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 bilateral symmetry determination of left/right symmetry specification of symmetry immune system development spleen development immune system process hematopoietic or lymphoid organ development 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 camera-type eye morphogenesis eye morphogenesis sensory organ morphogenesis iris morphogenesis animal organ morphogenesis odontogenesis heart morphogenesis cardiac neural crest cell development involved in heart development neural crest cell development cell development mesenchyme development mesenchymal cell migration ameboidal-type cell migration cell migration cell motility neural crest cell migration stem cell development cardiac neural crest cell development involved in outflow tract morphogenesis neural crest cell differentiation cell migration involved in heart development cardiocyte differentiation stem cell differentiation cardiac neural crest cell differentiation involved in heart development outflow tract morphogenesis mesenchymal cell differentiation cardiac neural crest cell migration involved in outflow tract morphogenesis 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 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 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	protein-containing complex transcription regulator complex cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle protein-containing complex transcription regulator complex cellular anatomical structure intracellular anatomical structure cytoplasm 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	DNA (5'-D(GPCPTPCPTPAPAPTPCPCPCPCP*G)-3')	-	-	-
C	DNA (5'-D(CPGPGPGPGPAPTPTPAPGPAPGP*C)-3')	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR017970	Homeobox, conserved site	Conserved Site
A	IPR003654	OAR domain	Domain
A	IPR016233	Homeobox protein Pitx/unc30	Family
A	IPR009057	Homedomain-like superfamily	Homologous Superfamily
A	IPR001356	Homeodomain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q99697	Axenfeld-Rieger syndrome ring dermoid of cornea Axenfeld-Rieger syndrome type 1 anterior segment dysgenesis 4 Craniofacial Abnormalities atrial fibrillation cerebrovascular disorder medulloblastoma osteogenesis imperfecta psoriasis ulcerative colitis anterior segment dysgenesis 7 cataract large cell medulloblastoma non-small cell lung carcinoma Axenfeld-Rieger syndrome ring dermoid of cornea Axenfeld-Rieger syndrome type 1 anterior segment dysgenesis 4 Craniofacial Abnormalities atrial fibrillation cerebrovascular disorder medulloblastoma osteogenesis imperfecta psoriasis ulcerative colitis anterior segment dysgenesis 7 cataract large cell medulloblastoma non-small cell lung carcinoma Peters anomaly spina bifida congenital heart disease intellectual disability iridogoniodysgenesis lung cancer pituitary cancer atrial fibrillation, familial, 1 corneal disease interstitial cystitis

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.