1KXL | pdb_00001kxl

Solution Structure of the Cdc13 DNA-binding Domain in a Complex with Single-Stranded Telomeric DNA (DNA structure not modeled)

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
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)
A	d1kxla_	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	CDC13 ssDNA-binding domain	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Nucleic acid-binding proteins	8041323	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)
A	POT1	e1kxlA1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: POT1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.2.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02765	Telomeric single stranded DNA binding POT1/CDC13 (POT1)	Telomeric single stranded DNA binding POT1/CDC13	This domain binds single stranded telomeric DNA and adopts an OB fold [1]. It includes the proteins POT1 and CDC13 which have been shown to regulate telomere length, replication and capping [2-4]. POT1 is one component of the shelterin complex that ...	This domain binds single stranded telomeric DNA and adopts an OB fold [1]. It includes the proteins POT1 and CDC13 which have been shown to regulate telomere length, replication and capping [2-4]. POT1 is one component of the shelterin complex that protects telomere-ends from attack by DNA-repair mechanisms [5,6].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CELL DIVISION CONTROL PROTEIN 13	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 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 protein binding translation elongation factor binding identical protein binding	telomere maintenance via telomerase telomere organization chromosome organization primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening telomere maintenance cellular component organization nucleic acid biosynthetic process organelle organization telomere maintenance via telomerase telomere organization chromosome organization primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening telomere maintenance cellular component organization nucleic acid biosynthetic process organelle organization biosynthetic process metabolic process cellular process macromolecule metabolic process cellular component organization or biogenesis DNA biosynthetic process regulation of telomere maintenance regulation of cellular component organization regulation of cellular process regulation of DNA biosynthetic process regulation of primary metabolic process regulation of nucleobase-containing compound metabolic process regulation of biosynthetic process regulation of biological process biological regulation regulation of chromosome organization regulation of macromolecule metabolic process regulation of telomere maintenance via telomere lengthening regulation of organelle organization regulation of telomere maintenance via telomerase regulation of macromolecule biosynthetic process regulation of metabolic process regulation of DNA metabolic process localization cellular localization ribonucleoprotein complex localization cell division 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 CST complex chromosome, telomeric region nuclear telomere cap complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR031749	Cell division control protein 13, N-terminal	Domain
A	IPR011564	Telomeric single stranded DNA binding POT1/Cdc13	Domain
A	IPR028389	Protection of telomeres protein 1	Family
A	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A	IPR041028	Cdc13, OB4 dimerization domain	Domain
A	IPR040650	Cell division control protein 13, OB2 domain	Domain

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.