Annotations: 2CRA

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2craa1	All alpha proteins	DNA/RNA-binding 3-helical bundle	Homeodomain-like	Homeodomain	Homeobox protein hox-b13	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2craa3	Artifacts	Tags	Tags	Tags	C-terminal Tags	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2craa2	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	8002357	4000291	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Homeodomain-like	8057595	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	e2craA2	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: Homeobox	ECOD (1.6)

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	Homeobox protein Hox-B13	DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity DNA-binding transcription repressor activity, RNA polymerase II-specific DNA-binding transcription repressor activity DNA binding sequence-specific DNA binding 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 DNA-binding transcription factor activity, RNA polymerase II-specific transcription regulator activity DNA-binding transcription factor activity DNA-binding transcription repressor activity, RNA polymerase II-specific DNA-binding transcription repressor activity DNA binding sequence-specific DNA binding 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 nucleoside phosphate binding nucleotide binding heterocyclic compound binding methyl-CpG binding small molecule binding	multicellular organismal process prostate gland development reproductive process gland development developmental process involved in reproduction prostate glandular acinus development prostate gland epithelium morphogenesis multicellular organism development gland morphogenesis anatomical structure development reproductive structure development animal organ morphogenesis system development developmental process multicellular organismal process prostate gland development reproductive process gland development developmental process involved in reproduction prostate glandular acinus development prostate gland epithelium morphogenesis multicellular organism development gland morphogenesis anatomical structure development reproductive structure development animal organ morphogenesis system development developmental process epithelium development reproductive system development animal organ development morphogenesis of an epithelium urogenital system development tissue development prostate epithelial cord arborization involved in prostate glandular acinus morphogenesis prostate glandular acinus morphogenesis prostate gland morphogenesis tissue morphogenesis anatomical structure morphogenesis morphogenesis of a branching structure branching involved in prostate gland morphogenesis morphogenesis of a branching epithelium blood vessel morphogenesis tube development angiogenesis vasculature development circulatory system development tube morphogenesis anatomical structure formation involved in morphogenesis blood vessel development response to stimulus response to stress response to wounding response to organic substance response to ketone response to lipid response to chemical response to oxygen-containing compound response to testosterone response to organic cyclic compound regulation of growth regulation of biological process biological regulation growth regulation of cellular process 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 organic substance metabolic process organic substance biosynthetic process 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 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 cellular process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process epidermis development 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 epithelial cell maturation involved in prostate gland development cellular developmental process cell development epithelial cell differentiation cell differentiation cell maturation epithelial cell differentiation involved in prostate gland development developmental maturation epithelial cell development anatomical structure maturation epithelial cell maturation	protein-containing complex transcription regulator complex membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen protein-containing complex transcription regulator complex membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen 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
A	IPR001356	Homeobox domain	Domain
A	IPR009057	Homeobox-like domain superfamily	Homologous Superfamily
A	IPR017970	Homeobox, conserved site	Conserved Site
A	IPR022067	Homeobox protein Hox1A3 N-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q92826	prostate cancer melanoma breast cancer breast carcinoma Neoplasm Invasiveness atypical teratoid rhabdoid tumor Crohn disease interstitial cystitis osteosarcoma prostate cancer, hereditary, 9 psoriasis cutaneous melanoma prostate carcinoma restless legs syndrome familial prostate carcinoma

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.