Annotations: 3NAU

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Homeobox	e3nauA2	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Homeobox	ECOD (1.6)
B	Homeobox	e3nauB1	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)
B	1.10.10.60	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Homeodomain-like	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Zinc fingers and homeoboxes protein 2	DNA binding binding nucleic acid binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity identical protein binding protein binding protein homodimerization activity protein dimerization activity protein heterodimerization activity cation binding ion binding metal ion binding DNA binding binding nucleic acid binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity identical protein binding protein binding protein homodimerization activity protein dimerization activity protein heterodimerization activity cation binding ion binding metal ion binding small molecule binding	regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of cellular process negative regulation of biological process RNA metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of DNA-templated transcription regulation of biological process negative regulation of metabolic process biological regulation 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 negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process cellular process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process multicellular organismal process regulation of developmental process cellular developmental process regulation of cell differentiation neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development negative regulation of cell differentiation system development developmental process negative regulation of developmental process nervous system development generation of neurons negative regulation of neuron differentiation regulation of neuron differentiation catabolic process macromolecule catabolic process RNA catabolic process mRNA catabolic process mRNA metabolic process nucleobase-containing compound catabolic process negative regulation of gene expression nucleic acid catabolic process somatic stem cell population maintenance maintenance of cell number stem cell population maintenance transcription by RNA polymerase II regulation of transcription by RNA polymerase II negative regulation of transcription by RNA polymerase II sensory organ development retina development in camera-type eye visual system development neural retina development eye morphogenesis animal organ morphogenesis sensory system development camera-type eye morphogenesis eye development animal organ development retinal bipolar neuron differentiation glutamatergic neuron differentiation retina morphogenesis in camera-type eye anatomical structure morphogenesis sensory organ morphogenesis camera-type eye development	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR009057	Homedomain-like superfamily	Homologous Superfamily
A, B	IPR013087	Zinc finger C2H2-type	Domain
A, B	IPR036236	Zinc finger C2H2 superfamily	Homologous Superfamily
A, B	IPR041057	ZHX, C2H2 finger domain	Domain
A, B	IPR001356	Homeodomain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q9Y6X8	astrocytic tumor malignant mesothelioma pancreatic intraductal papillary-mucinous carcinoma ulcerative colitis lung cancer oligodendroglioma psoriasis malignant ependymoma osteosarcoma tuberculosis

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.