Annotations: 4UYI

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	BTB	e4uyiA1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: BTB	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00651	BTB/POZ domain (BTB)	BTB/POZ domain	The BTB (for BR-C, ttk and bab) [1] or POZ (for Pox virus and Zinc finger) [2] domain is present near the N-terminus of a fraction of zinc finger (Pfam:PF00096) proteins and in proteins that contain the Pfam:PF01344 motif such as Kelch and a family o ...	The BTB (for BR-C, ttk and bab) [1] or POZ (for Pox virus and Zinc finger) [2] domain is present near the N-terminus of a fraction of zinc finger (Pfam:PF00096) proteins and in proteins that contain the Pfam:PF01344 motif such as Kelch and a family of pox virus proteins. The BTB/POZ domain mediates homomeric dimerisation and in some instances heteromeric dimerisation [2]. The structure of the dimerised PLZF BTB/POZ domain has been solved and consists of a tightly intertwined homodimer. The central scaffolding of the protein is made up of a cluster of alpha-helices flanked by short beta-sheets at both the top and bottom of the molecule [3]. POZ domains from several zinc finger proteins have been shown to mediate transcriptional repression and to interact with components of histone deacetylase co-repressor complexes including N-CoR and SMRT [4,5,6]. The POZ or BTB domain is also known as BR-C/Ttk or ZiN.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	STRUCTURE-SPECIFIC ENDONUCLEASE SUBUNIT SLX4	DNA binding binding nucleic acid binding enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity cation binding ion binding metal ion binding small molecule binding	nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process sexual reproduction homologous recombination reproductive process resolution of meiotic recombination intermediates meiotic cell cycle process cellular component organization nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process sexual reproduction homologous recombination reproductive process resolution of meiotic recombination intermediates meiotic cell cycle process cellular component organization meiosis I meiotic nuclear division cell cycle cellular component organization or biogenesis reciprocal homologous recombination cell cycle process meiotic cell cycle DNA recombination organelle fission reciprocal meiotic recombination nuclear division organelle organization meiosis I cell cycle process formation of extrachromosomal circular DNA telomere organization chromosome organization cellular component biogenesis telomere maintenance cellular component assembly telomere maintenance via telomere trimming t-circle formation telomeric loop disassembly telomeric D-loop disassembly positive regulation of organelle organization regulation of telomere maintenance regulation of cellular process regulation of cellular component organization positive regulation of cellular component organization regulation of t-circle formation positive regulation of biological process regulation of primary metabolic process positive regulation of metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of biological process positive regulation of telomere maintenance positive regulation of nucleobase-containing compound metabolic process positive regulation of cellular component biogenesis biological regulation regulation of chromosome organization regulation of macromolecule metabolic process regulation of cellular component biogenesis regulation of organelle organization positive regulation of chromosome organization positive regulation of DNA metabolic process positive regulation of t-circle formation regulation of metabolic process regulation of DNA metabolic process cellular response to stimulus double-strand break repair response to stimulus cellular response to stress DNA damage response response to stress recombinational repair double-strand break repair via homologous recombination DNA repair negative regulation of telomere maintenance negative regulation of telomere maintenance via telomere lengthening negative regulation of biological process telomere maintenance via telomere lengthening negative regulation of chromosome organization negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process negative regulation of macromolecule metabolic process negative regulation of cellular component organization negative regulation of metabolic process regulation of telomere maintenance via telomere lengthening negative regulation of organelle organization negative regulation of DNA metabolic process nucleotide-excision repair DNA double-strand break processing double-strand break repair via single-strand annealing DNA double-strand break processing involved in repair via single-strand annealing response to endogenous stimulus response to intra-S DNA damage checkpoint signaling response to biotic stimulus cellular response to biotic stimulus cellular response to endogenous stimulus response to DNA integrity checkpoint signaling response to DNA damage checkpoint signaling response to cell cycle checkpoint signaling	cellular anatomical structure cell junction membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome intracellular membraneless organelle chromosome intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle cellular anatomical structure cell junction membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome intracellular membraneless organelle chromosome intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle organelle lumen organelle membraneless organelle Slx1-Slx4 complex nuclear lumen cytoplasm cytosol nucleoplasm chromatin chromosome, telomeric region chromosomal region

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000210	BTB/POZ domain	Domain
A	IPR018574	Structure-specific endonuclease subunit Slx4	Family
A	IPR006642	Rad18, zinc finger UBZ4-type	Domain
A	IPR011333	SKP1/BTB/POZ domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q8IY92	Fanconi anemia Fanconi anemia complementation group P aplastic anemia Esophageal atresia with or without tracheoesophageal fistula hereditary breast carcinoma congenital anemia esophageal atresia/tracheoesophageal fistula inherited aplastic anemia neurofibromatosis type 1 hematopoietic and lymphoid system neoplasm intellectual disability osteosarcoma

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.