1K8G | pdb_00001k8g

Crystal Structure of the N-terminal domain of Oxytricha nova telomere end binding protein alpha subunit both uncomplexed and complexed with telomeric ssDNA

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
E [auth C]	d1k8gc1	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	Telomere end binding protein alpha subunit	(Sterkiella nova ) [TaxId: 200597 ],	SCOPe (2.08)
D [auth B]	d1k8gb1	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	Telomere end binding protein alpha subunit	(Sterkiella nova ) [TaxId: 200597 ],	SCOPe (2.08)
C [auth A]	d1k8ga1	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	Telomere end binding protein alpha subunit	(Sterkiella nova ) [TaxId: 200597 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E [auth C]	SCOP2B Superfamily	Nucleic acid-binding proteins	8034298	3000135	SCOP2B (2022-06-29)
E [auth C]	SCOP2B Superfamily	Nucleic acid-binding proteins	8034296	3000135	SCOP2B (2022-06-29)
D [auth B]	SCOP2B Superfamily	Nucleic acid-binding proteins	8034296	3000135	SCOP2B (2022-06-29)
D [auth B]	SCOP2B Superfamily	Nucleic acid-binding proteins	8034298	3000135	SCOP2B (2022-06-29)
C [auth A]	SCOP2B Superfamily	Nucleic acid-binding proteins	8034296	3000135	SCOP2B (2022-06-29)
C [auth A]	SCOP2B Superfamily	Nucleic acid-binding proteins	8034298	3000135	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E [auth C]	CSD	e1k8gC1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: CSD	ECOD (v294.1)
D [auth B]	CSD	e1k8gB1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: CSD	ECOD (v294.1)
C [auth A]	CSD	e1k8gA1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: CSD	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E [auth C]	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
D [auth B]	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
C [auth A]	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth A], D [auth B], E [auth C]	Telomere-Binding Protein alpha Subunit	sequence-specific DNA binding DNA binding G-rich strand telomeric DNA binding binding sequence-specific single stranded DNA binding single-stranded telomeric DNA binding single-stranded DNA binding nucleic acid binding telomeric DNA binding enzyme regulator activity molecular function inhibitor activity molecular function regulator activity enzyme inhibitor activity telomerase inhibitor activity	regulation of telomere maintenance regulation of cellular component organization regulation of cellular process telomere organization regulation of DNA biosynthetic process regulation of primary metabolic process RNA-templated DNA biosynthetic process telomere maintenance via telomere lengthening cellular component organization nucleobase-containing compound metabolic process nucleic acid biosynthetic process cellular component organization or biogenesis regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of telomere maintenance regulation of cellular component organization regulation of cellular process telomere organization regulation of DNA biosynthetic process regulation of primary metabolic process RNA-templated DNA biosynthetic process telomere maintenance via telomere lengthening cellular component organization nucleobase-containing compound metabolic process nucleic acid biosynthetic process cellular component organization or biogenesis regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of biological process telomere maintenance via telomerase biological regulation chromosome organization primary metabolic process DNA metabolic process regulation of chromosome organization regulation of macromolecule metabolic process regulation of telomere maintenance via telomere lengthening nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process regulation of organelle organization regulation of telomere maintenance via telomerase telomere maintenance organelle organization biosynthetic process cellular process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of metabolic process DNA biosynthetic process regulation of DNA metabolic process telomere capping	membrane-bounded organelle protein-containing complex intracellular anatomical structure protein-DNA complex nucleus intracellular membraneless organelle nuclear protein-containing complex chromosome intracellular membrane-bounded organelle chromosomal region intracellular organelle cellular anatomical structure organelle telomere cap complex membrane-bounded organelle protein-containing complex intracellular anatomical structure protein-DNA complex nucleus intracellular membraneless organelle nuclear protein-containing complex chromosome intracellular membrane-bounded organelle chromosomal region intracellular organelle cellular anatomical structure organelle telomere cap complex membraneless organelle chromosome, telomeric repeat region chromosome, telomeric region nuclear telomere cap complex
A [auth D], B [auth E]	5'-D(TPTPGPGPGP*G)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A], D [auth B], E [auth C]	IPR011564	Telomeric single stranded DNA binding POT1/Cdc13	Domain
C [auth A], D [auth B], E [auth C]	IPR053979	Telomere end-binding protein alpha subunit-like, OB2 domain	Domain
C [auth A], D [auth B], E [auth C]	IPR028389	Protection of telomeres protein 1	Family
C [auth A], D [auth B], E [auth C]	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
C [auth A], D [auth B], E [auth C]	IPR003415	Telomere-binding protein, alpha subunit, Spirotrichea	Family

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.