Annotations: 4OWT

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Ints3-like	8051670	4007462	SCOP2 (2022-06-29)
A	SCOP2 Family	Ints3 N-terminal domain-like	8052458	4007592	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ARM repeat-like	8052456	3000116	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ARM repeat-like	8052459	3000116	SCOP2 (2022-06-29)
C	SCOP2 Family	SOSSC-like	8044754	4004117	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	SOSSC C-terminal motif-like	8052447	3002118	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	PF10189	e4owtA1	A: alpha superhelices	X: Repetitive alpha hairpins	H: ARM repeat (From Topology)	T: ARM repeat	F: PF10189	ECOD (1.6)
B	PF01336	e4owtB1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: PF01336	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF10189	Integrator complex subunit 3 N-terminal (Ints3_N)	Integrator complex subunit 3 N-terminal	-	Repeat
B	PF21473	Single-stranded DNA binding protein Ssb-like, OB fold (Ssb-like_OB)	Single-stranded DNA binding protein Ssb-like, OB fold	This entry represents the OB fold of single-stranded DNA binding protein Ssb from archaea and its homologues from mammals and plants. Members of this entry have a simple domain organisation consisting of a single DNA-binding OB fold coupled to a flex ...	This entry represents the OB fold of single-stranded DNA binding protein Ssb from archaea and its homologues from mammals and plants. Members of this entry have a simple domain organisation consisting of a single DNA-binding OB fold coupled to a flexible C-terminal tail [1-3]. The ssDNA recognition is modulated by base-stacking of three key aromatic residues in archaeal Ssb, in contrast with the OB domain of the human homologue hSSB1 [3].	Domain
C	PF15925	SOSS complex subunit C (SOSSC)	SOSS complex subunit C	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Integrator complex subunit 3	-	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process response to ionizing radiation response to radiation response to abiotic stimulus double-strand break repair DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process response to ionizing radiation response to radiation response to abiotic stimulus double-strand break repair DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process recombinational repair metabolic process macromolecule metabolic process double-strand break repair via homologous recombination DNA repair cellular biosynthetic process cellular metabolic process RNA metabolic process gene expression macromolecule biosynthetic process snRNA metabolic process biosynthetic process ncRNA metabolic process snRNA processing organic substance biosynthetic process nucleic acid catabolic process RNA processing regulation of cellular process regulation of cell cycle phase transition signaling G2/M transition of mitotic cell cycle negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction mitotic cell cycle negative regulation of mitotic cell cycle mitotic G2/M transition checkpoint cell communication regulation of mitotic cell cycle negative regulation of cellular process negative regulation of cell cycle phase transition signal transduction cell cycle regulation of cell cycle cell cycle process cell cycle G2/M phase transition regulation of biological process negative regulation of mitotic cell cycle phase transition regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process biological regulation regulation of cell cycle G2/M phase transition negative regulation of cell cycle process cell cycle checkpoint signaling regulation of mitotic cell cycle phase transition mitotic cell cycle checkpoint signaling mitotic cell cycle process negative regulation of cell cycle G2/M phase transition negative regulation of G2/M transition of mitotic cell cycle mitotic cell cycle phase transition transcription elongation by RNA polymerase II regulation of primary metabolic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of DNA-templated transcription elongation regulation of transcription elongation by RNA polymerase II regulation of cellular metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process regulation of cellular biosynthetic process regulation of gene expression DNA-templated transcription elongation organic cyclic compound biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process	membrane-bounded organelle intracellular organelle protein-containing complex SOSS complex intracellular anatomical structure organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity integrator complex cytoplasm site of double-strand break intracellular non-membrane-bounded organelle membrane-bounded organelle intracellular organelle protein-containing complex SOSS complex intracellular anatomical structure organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity integrator complex cytoplasm site of double-strand break intracellular non-membrane-bounded organelle site of DNA damage chromosome non-membrane-bounded organelle membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
B	SOSS complex subunit B1	DNA binding binding organic cyclic compound binding nucleic acid binding sequence-specific DNA binding G-rich strand telomeric DNA binding sequence-specific single stranded DNA binding single-stranded telomeric DNA binding single-stranded DNA binding telomeric DNA binding protein binding DNA polymerase binding enzyme binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process establishment of protein localization to telomere protein localization establishment of protein localization cellular localization protein localization to chromosome, telomeric region establishment of localization localization establishment of protein localization to organelle cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process establishment of protein localization to telomere protein localization establishment of protein localization cellular localization protein localization to chromosome, telomeric region establishment of localization localization establishment of protein localization to organelle protein localization to chromosome cellular macromolecule localization macromolecule localization protein localization to organelle establishment of protein localization to chromosome response to ionizing radiation response to radiation response to abiotic stimulus double-strand break repair DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process recombinational repair metabolic process macromolecule metabolic process double-strand break repair via homologous recombination DNA repair regulation of cellular process regulation of cell cycle phase transition signaling G2/M transition of mitotic cell cycle negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction mitotic cell cycle negative regulation of mitotic cell cycle mitotic G2/M transition checkpoint cell communication regulation of mitotic cell cycle negative regulation of cellular process negative regulation of cell cycle phase transition signal transduction cell cycle regulation of cell cycle cell cycle process cell cycle G2/M phase transition regulation of biological process negative regulation of mitotic cell cycle phase transition regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process biological regulation regulation of cell cycle G2/M phase transition negative regulation of cell cycle process cell cycle checkpoint signaling regulation of mitotic cell cycle phase transition mitotic cell cycle checkpoint signaling mitotic cell cycle process negative regulation of cell cycle G2/M phase transition negative regulation of G2/M transition of mitotic cell cycle mitotic cell cycle phase transition positive regulation of organelle organization regulation of telomere maintenance regulation of cellular component organization positive regulation of cellular component organization positive regulation of biological process telomere organization regulation of primary metabolic process cellular component organization positive regulation of metabolic process positive regulation of macromolecule metabolic process cellular component organization or biogenesis regulation of nucleobase-containing compound metabolic process positive regulation of telomere capping positive regulation of cellular process positive regulation of telomere maintenance positive regulation of nucleobase-containing compound metabolic process chromosome organization regulation of chromosome organization regulation of macromolecule metabolic process regulation of organelle organization positive regulation of chromosome organization telomere maintenance organelle organization positive regulation of DNA metabolic process telomere capping regulation of telomere capping regulation of metabolic process regulation of DNA metabolic process	membrane-bounded organelle intracellular organelle protein-containing complex SOSS complex intracellular anatomical structure organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity cytoplasm cytosol site of double-strand break intracellular non-membrane-bounded organelle membrane-bounded organelle intracellular organelle protein-containing complex SOSS complex intracellular anatomical structure organelle nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity cytoplasm cytosol site of double-strand break intracellular non-membrane-bounded organelle site of DNA damage chromosome non-membrane-bounded organelle chromosome, telomeric region chromosomal region membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen
C	SOSS complex subunit C	-	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process response to ionizing radiation response to radiation response to abiotic stimulus regulation of cellular process regulation of cell cycle phase transition signaling G2/M transition of mitotic cell cycle negative regulation of biological process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process response to ionizing radiation response to radiation response to abiotic stimulus regulation of cellular process regulation of cell cycle phase transition signaling G2/M transition of mitotic cell cycle negative regulation of biological process negative regulation of cell cycle cell cycle phase transition intracellular signal transduction mitotic cell cycle negative regulation of mitotic cell cycle mitotic G2/M transition checkpoint cell communication regulation of mitotic cell cycle negative regulation of cellular process negative regulation of cell cycle phase transition signal transduction cell cycle regulation of cell cycle cell cycle process cell cycle G2/M phase transition regulation of biological process negative regulation of mitotic cell cycle phase transition regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process biological regulation regulation of cell cycle G2/M phase transition negative regulation of cell cycle process cell cycle checkpoint signaling regulation of mitotic cell cycle phase transition mitotic cell cycle checkpoint signaling mitotic cell cycle process negative regulation of cell cycle G2/M phase transition negative regulation of G2/M transition of mitotic cell cycle mitotic cell cycle phase transition double-strand break repair DNA recombination primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process recombinational repair metabolic process macromolecule metabolic process double-strand break repair via homologous recombination DNA repair	intracellular organelle site of double-strand break intracellular anatomical structure organelle intracellular non-membrane-bounded organelle site of DNA damage chromosome cellular anatomical entity non-membrane-bounded organelle membrane-bounded organelle protein-containing complex SOSS complex nucleus nuclear protein-containing complex intracellular organelle site of double-strand break intracellular anatomical structure organelle intracellular non-membrane-bounded organelle site of DNA damage chromosome cellular anatomical entity non-membrane-bounded organelle membrane-bounded organelle protein-containing complex SOSS complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR045334	Integrator complex subunit 3	Family
A	IPR019333	Integrator complex subunit 3, N-terminal	Domain
B	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
B	IPR048970	Single-stranded DNA binding protein Ssb-like, OB fold	Domain
C	IPR031821	SOSS complex subunit C	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	Pharos: Q9BQ15	atypical teratoid rhabdoid tumor psoriasis glioblastoma skin disease large cell medulloblastoma
C	Pharos: Q9NRY2	astrocytic tumor osteosarcoma atypical teratoid rhabdoid tumor tuberculosis large cell medulloblastoma

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.