Annotations: 8URQ

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D [auth C]	SCOP2B Superfamily	WD40 repeat-like	8039680	3001694	SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth A]	PF04406	Type IIB DNA topoisomerase (TP6A_N)	Type IIB DNA topoisomerase	Type II DNA topoisomerases are ubiquitous enzymes that catalyse the ATP-dependent transport of one DNA duplex through a second DNA segment via a transient double-strand break. Type II DNA topoisomerases are now subdivided into two sub-families, type ...	Type II DNA topoisomerases are ubiquitous enzymes that catalyse the ATP-dependent transport of one DNA duplex through a second DNA segment via a transient double-strand break. Type II DNA topoisomerases are now subdivided into two sub-families, type IIA and IIB DNA topoisomerases. TP6A_N is present in type IIB topoisomerase and is thought to be involved in DNA binding owing to its sequence similarity to E. coli catabolite activator protein (CAP) [1].	Domain
C [auth A]	PF21180	Topoisomerase 6 subunit A/Spo11, Toprim domain (TOP6A-Spo11_Toprim)	Topoisomerase 6 subunit A/Spo11, Toprim domain	This topoisomerase-primase (Toprim) nucleotidyl transferase/hydrolase domain is found in the type II topoisomerase VIA and Spo11, which structurally related. Spo11 is a meiosis-specific protein that is responsible for the initiation of recombination ...	This topoisomerase-primase (Toprim) nucleotidyl transferase/hydrolase domain is found in the type II topoisomerase VIA and Spo11, which structurally related. Spo11 is a meiosis-specific protein that is responsible for the initiation of recombination through the formation of DNA double-strand breaks by a type II DNA topoisomerase-like activity. Topoisomerase VI is a type IIB enzyme that breaks double-stranded DNA and assembles as a heterotetramer, consisting of two A subunits required for DNA cleavage and two B subunits required for ATP hydrolysis [1-3].	Domain
D [auth C]	PF00400	WD domain, G-beta repeat (WD40)	WD domain, G-beta repeat	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth F]	Meiotic recombination protein REC104	-	sexual reproduction reproductive process meiotic cell cycle primary metabolic process DNA metabolic process meiotic cell cycle process nucleic acid metabolic process nucleobase-containing compound metabolic process meiotic DNA double-strand break formation meiosis I cell cycle process cellular process metabolic process cell cycle macromolecule metabolic process sexual reproduction reproductive process meiotic cell cycle primary metabolic process DNA metabolic process meiotic cell cycle process nucleic acid metabolic process nucleobase-containing compound metabolic process meiotic DNA double-strand break formation meiosis I cell cycle process cellular process metabolic process cell cycle macromolecule metabolic process cell cycle process homologous recombination cellular component organization meiosis I meiotic nuclear division cellular component organization or biogenesis reciprocal homologous recombination DNA recombination organelle fission reciprocal meiotic recombination nuclear division organelle organization	membrane-bounded organelle condensed nuclear chromosome intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle membrane-bounded organelle condensed nuclear chromosome intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle condensed chromosome non-membrane-bounded organelle nuclear lumen
B	Meiotic recombination protein REC102	-	sexual reproduction reproductive process meiotic cell cycle primary metabolic process DNA metabolic process meiotic cell cycle process nucleic acid metabolic process nucleobase-containing compound metabolic process meiotic DNA double-strand break formation meiosis I cell cycle process cellular process metabolic process cell cycle macromolecule metabolic process sexual reproduction reproductive process meiotic cell cycle primary metabolic process DNA metabolic process meiotic cell cycle process nucleic acid metabolic process nucleobase-containing compound metabolic process meiotic DNA double-strand break formation meiosis I cell cycle process cellular process metabolic process cell cycle macromolecule metabolic process cell cycle process homologous recombination cellular component organization meiosis I meiotic nuclear division cellular component organization or biogenesis reciprocal homologous recombination DNA recombination organelle fission reciprocal meiotic recombination nuclear division organelle organization	membrane-bounded organelle condensed nuclear chromosome intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle membrane-bounded organelle condensed nuclear chromosome intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle condensed chromosome non-membrane-bounded organelle nuclear lumen
C [auth A]	Meiosis-specific protein SPO11	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding DNA binding nucleic acid binding DNA end binding protein-containing complex binding chromatin binding ATP-dependent activity, acting on DNA isomerase activity catalytic activity, acting on DNA catalytic activity, acting on a nucleic acid DNA topoisomerase activity DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity catalytic activity ATP-dependent activity cation binding metal ion binding	sexual reproduction reproductive process meiotic cell cycle primary metabolic process DNA metabolic process meiotic cell cycle process nucleic acid metabolic process nucleobase-containing compound metabolic process meiotic DNA double-strand break formation meiosis I cell cycle process cellular process metabolic process cell cycle macromolecule metabolic process sexual reproduction reproductive process meiotic cell cycle primary metabolic process DNA metabolic process meiotic cell cycle process nucleic acid metabolic process nucleobase-containing compound metabolic process meiotic DNA double-strand break formation meiosis I cell cycle process cellular process metabolic process cell cycle macromolecule metabolic process cell cycle process homologous recombination cellular component organization meiosis I meiotic nuclear division cellular component organization or biogenesis reciprocal homologous recombination DNA recombination organelle fission reciprocal meiotic recombination nuclear division organelle organization meiotic chromosome segregation synaptonemal complex assembly cellular component biogenesis cellular component assembly synaptonemal complex organization chromosome segregation chromosome organization chromosome organization involved in meiotic cell cycle homologous chromosome pairing at meiosis nuclear chromosome segregation homologous chromosome segregation sporulation resulting in formation of a cellular spore developmental process anatomical structure morphogenesis anatomical structure formation involved in morphogenesis anatomical structure development sporulation cellular response to stimulus double-strand break repair response to stimulus DNA double-strand break processing cellular response to stress DNA damage response response to stress meiotic DNA double-strand break processing DNA repair	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle condensed nuclear chromosome condensed chromosome site of double-strand break site of DNA damage nucleoplasm
D [auth C]	Antiviral protein SKI8	-	regulation of cellular process catabolic process cellular biosynthetic process negative regulation of biological process RNA metabolic process negative regulation of cellular metabolic process macromolecule catabolic process nucleobase-containing compound metabolic process negative regulation of cellular process RNA catabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process mRNA catabolic process nuclear-transcribed mRNA catabolic process regulation of cellular process catabolic process cellular biosynthetic process negative regulation of biological process RNA metabolic process negative regulation of cellular metabolic process macromolecule catabolic process nucleobase-containing compound metabolic process negative regulation of cellular process RNA catabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process mRNA catabolic process nuclear-transcribed mRNA catabolic process regulation of biological process cellular metabolic process negative regulation of metabolic process biological regulation regulation of cellular metabolic process primary metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process mRNA metabolic process negative regulation of cellular biosynthetic process nucleic acid metabolic process nucleobase-containing compound catabolic process regulation of cellular biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process nucleic acid catabolic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process nuclear-transcribed mRNA catabolic process, non-stop decay cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular component organization or biogenesis homologous recombination sexual reproduction reproductive process meiotic cell cycle process meiosis I meiotic nuclear division cell cycle reciprocal homologous recombination cell cycle process DNA recombination meiotic cell cycle organelle fission DNA metabolic process reciprocal meiotic recombination nuclear division organelle organization meiosis I cell cycle process biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to virus defense response to other organism response to stress response to external biotic stimulus response to virus protein-DNA complex organization protein-DNA complex assembly nuclear-transcribed mRNA catabolic process, nonsense-mediated decay nuclear-transcribed mRNA catabolic process, 3'-5' exonucleolytic nonsense-mediated decay	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen nuclear chromosome chromosome intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle protein-containing complex cytoplasm Ski complex
E [auth D]	gapped DNA	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth F]	IPR035349	Meiotic recombination protein Rec104	Family
B	IPR048920	Meiotic recombination protein REC102	Family
C [auth A]	IPR034136	Topoisomerase 6 subunit A/Spo11, TOPRIM domain	Domain
C [auth A]	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
C [auth A]	IPR002815	Spo11/DNA topoisomerase VI subunit A	Family
C [auth A]	IPR036078	Spo11/DNA topoisomerase VI subunit A superfamily	Homologous Superfamily
C [auth A]	IPR013049	Spo11/DNA topoisomerase VI, subunit A, N-terminal	Domain
D [auth C]	IPR019775	WD40 repeat, conserved site	Conserved Site
D [auth C]	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
D [auth C]	IPR051510	Superkiller complex protein 8	Family
D [auth C]	IPR001680	WD40 repeat	Repeat
D [auth C]	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily

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 R01GM133198.