Annotations: 5W2L

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF15489	e5w2lA1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: PF15489	ECOD (1.6)
B	PF15489	e5w2lB1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: PF15489	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF15489	CST, telomere maintenance, complex subunit CTC1 (CTC1)	CST, telomere maintenance, complex subunit CTC1	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	CST complex subunit CTC1	sequence-specific DNA binding DNA binding G-rich strand telomeric DNA binding binding organic cyclic compound binding sequence-specific single stranded DNA binding single-stranded telomeric DNA binding single-stranded DNA binding nucleic acid binding telomeric DNA binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process developmental process stem cell proliferation cell population proliferation cellular developmental process hemopoiesis cell differentiation anatomical structure development hematopoietic stem cell proliferation cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process developmental process stem cell proliferation cell population proliferation cellular developmental process hemopoiesis cell differentiation anatomical structure development hematopoietic stem cell proliferation cell development immune system development multicellular organism development multicellular organismal process spleen development immune system process animal organ development hematopoietic or lymphoid organ development system development tissue development bone marrow development skeletal system development bone development gland development thymus development cell cycle G2/M phase transition regulation of biological process regulation of cell cycle phase transition regulation of cellular process regulation of G2/M transition of mitotic cell cycle regulation of cell cycle process G2/M transition of mitotic cell cycle biological regulation regulation of cell cycle G2/M phase transition cell cycle phase transition mitotic cell cycle regulation of mitotic cell cycle phase transition regulation of mitotic cell cycle mitotic cell cycle process cell cycle regulation of cell cycle cell cycle process mitotic cell cycle phase transition fibroblast proliferation positive regulation of cell population proliferation positive regulation of biological process regulation of fibroblast proliferation regulation of cell population proliferation positive regulation of fibroblast proliferation positive regulation of cellular process replicative senescence cellular metabolic process metabolic process positive regulation of DNA replication regulation of primary metabolic process nucleobase-containing compound metabolic process positive regulation of metabolic process organic substance metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of nucleobase-containing compound metabolic process primary metabolic process DNA metabolic process regulation of macromolecule metabolic process nucleic acid metabolic process organic cyclic compound metabolic process DNA replication positive regulation of DNA metabolic process macromolecule metabolic process regulation of metabolic process regulation of DNA metabolic process regulation of DNA replication telomere organization chromosome organization telomere maintenance cellular component organization organelle organization telomere capping cellular component organization or biogenesis multicellular organism growth developmental growth growth telomere maintenance via telomere lengthening negative regulation of telomere maintenance negative regulation of biological process negative regulation of telomere maintenance via telomerase regulation of DNA biosynthetic process negative regulation of cellular metabolic process RNA-templated DNA biosynthetic process negative regulation of chromosome organization organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process negative regulation of cellular component organization negative regulation of metabolic process regulation of cellular metabolic process regulation of chromosome organization regulation of telomere maintenance via telomere lengthening regulation of organelle organization negative regulation of cellular biosynthetic process biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound biosynthetic process regulation of macromolecule biosynthetic process DNA biosynthetic process negative regulation of DNA biosynthetic process regulation of telomere maintenance regulation of cellular component organization negative regulation of telomere maintenance via telomere lengthening cellular biosynthetic process nucleic acid biosynthetic process negative regulation of cellular process negative regulation of macromolecule metabolic process regulation of biosynthetic process telomere maintenance via telomerase nucleobase-containing compound biosynthetic process macromolecule biosynthetic process regulation of telomere maintenance via telomerase regulation of cellular biosynthetic process negative regulation of organelle organization negative regulation of biosynthetic process negative regulation of DNA metabolic process	membrane-bounded organelle protein-containing complex intracellular anatomical structure protein-DNA complex nucleus nuclear protein-containing complex chromosome cellular anatomical entity intracellular membrane-bounded organelle chromosomal region intracellular organelle organelle telomere cap complex intracellular non-membrane-bounded organelle membrane-bounded organelle protein-containing complex intracellular anatomical structure protein-DNA complex nucleus nuclear protein-containing complex chromosome cellular anatomical entity intracellular membrane-bounded organelle chromosomal region intracellular organelle organelle telomere cap complex intracellular non-membrane-bounded organelle chromosome, telomeric repeat region CST complex chromosome, telomeric region non-membrane-bounded organelle nuclear telomere cap complex cytoplasm cytosol membrane-enclosed lumen intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR042617	CST complex subunit CTC1-like	Family
A, B	IPR029156	CST complex subunit CTC1	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q2NKJ3	dyskeratosis congenita Coats disease gastric antral vascular ectasia brain disease cerebroretinal microangiopathy with calcifications and cysts 1 calcinosis Bone Diseases, Metabolic Coats plus syndrome hematopoietic and lymphoid system neoplasm osteosarcoma congenital anemia endogenous depression intellectual disability 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.