6D6V

CryoEM structure of Tetrahymena telomerase with telomeric DNA at 4.8 Angstrom resolution

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	TERT TR-binding domain-like	8052457	3002119	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Telomerase reverse transcriptase TEN domain-like	8092918	3002644	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)
B [auth D]	Rep_fac-A_C_like	e6d6vD2	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: Rep_fac-A_C_like	ECOD (1.6)
B [auth D]	zf-B_box_like	e6d6vD1	A: few secondary structure elements	X: Rubredoxin-like	H: Rubredoxin-related	T: Rubredoxin-related	F: zf-B_box_like	ECOD (1.6)
C [auth F]	Rep_fac-A_3	e6d6vF1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: Rep_fac-A_3	ECOD (1.6)
H	RRM_3	e6d6vH1	A: a+b two layers	X: Alpha-beta plaits	H: RNA-binding domain, RBD (From Topology)	T: RNA-binding domain, RBD	F: RRM_3	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00078	Reverse transcriptase (RNA-dependent DNA polymerase) (RVT_1)	Reverse transcriptase (RNA-dependent DNA polymerase)	A reverse transcriptase gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. Reverse transcriptases occur in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs ...	A reverse transcriptase gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. Reverse transcriptases occur in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and caulimoviruses.	Domain
A	PF12009	Telomerase ribonucleoprotein complex - RNA binding domain (Telomerase_RBD)	Telomerase ribonucleoprotein complex - RNA binding domain	Telomeres in most organisms are comprised of tandem simple sequence repeats [1]. The total length of telomeric repeat sequence at each chromosome end is determined in a balance of sequence loss and sequence addition [1]. One major influence on telome ...	Telomeres in most organisms are comprised of tandem simple sequence repeats [1]. The total length of telomeric repeat sequence at each chromosome end is determined in a balance of sequence loss and sequence addition [1]. One major influence on telomere length is the enzyme telomerase [1]. It is a reverse transcriptase that adds these simple sequence repeats to chromosome ends by copying a template sequence within the RNA component of the enzyme [1]. The RNA binding domain of telomerase - TRBD - is made up of twelve alpha helices and two short beta sheets [2]. How telomerase and associated regulatory factors physically interact and function with each other to maintain appropriate telomere length is poorly understood. It is known however that TRBD is involved in formation of the holoenzyme (which performs the telomere extension) in addition to recognition and binding of RNA [2].	Domain
B [auth D]	PF08646	Replication factor-A C terminal domain (Rep_fac-A_C)	Replication factor-A C terminal domain	-	Family
C [auth F]	PF08661	Replication factor A protein 3 (Rep_fac-A_3)	Replication factor A protein 3	Replication factor A is involved in eukaryotic DNA replication, recombination and repair.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Telomerase reverse transcriptase	telomerase activity RNA-directed DNA polymerase activity catalytic activity, acting on DNA DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity telomerase RNA reverse transcriptase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups RNA binding binding telomerase RNA binding organic cyclic compound binding telomerase activity RNA-directed DNA polymerase activity catalytic activity, acting on DNA DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity telomerase RNA reverse transcriptase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups RNA binding binding telomerase RNA binding organic cyclic compound binding nucleic acid binding sequence-specific DNA binding DNA binding telomeric DNA binding cation binding ion binding metal ion binding small molecule binding	cellular biosynthetic process telomere organization RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening cellular component organization nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis telomere maintenance via telomerase cellular metabolic process chromosome organization primary metabolic process cellular biosynthetic process telomere organization RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening cellular component organization nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis telomere maintenance via telomerase cellular metabolic process chromosome organization primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process telomere maintenance organic cyclic compound metabolic process organelle organization biosynthetic process organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process DNA biosynthetic process	membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle chromosome membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle chromosome chromosome, telomeric region chromosomal region non-membrane-bounded organelle
B [auth D]	Telomerase-associated protein 82	sequence-specific DNA binding 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 cation binding transition metal ion binding zinc ion binding ion binding metal ion binding sequence-specific DNA binding 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 cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	cellular biosynthetic process telomere organization RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening cellular component organization nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis telomere maintenance via telomerase cellular metabolic process chromosome organization primary metabolic process cellular biosynthetic process telomere organization RNA-templated DNA biosynthetic process nucleobase-containing compound metabolic process telomere maintenance via telomere lengthening cellular component organization nucleic acid biosynthetic process organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis telomere maintenance via telomerase cellular metabolic process chromosome organization primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process telomere maintenance organic cyclic compound metabolic process organelle organization biosynthetic process organic cyclic compound biosynthetic process metabolic process cellular process macromolecule metabolic process DNA biosynthetic process	membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle chromosome membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle chromosome chromosome, telomeric region chromosomal region non-membrane-bounded organelle
C [auth F]	Telomerase holoenzyme TEB heterotrimer Teb3 subunit	DNA binding binding organic cyclic compound binding nucleic acid binding	nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA replication organic substance metabolic process metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus response to stimulus cellular response to stress DNA damage response response to stress nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA replication organic substance metabolic process metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus response to stimulus cellular response to stress DNA damage response response to stress cellular process DNA repair DNA recombination	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle nuclear replisome replication fork non-membrane-bounded organelle DNA replication factor A complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle nuclear replisome replication fork non-membrane-bounded organelle DNA replication factor A complex protein-DNA complex nuclear replication fork intracellular membrane-bounded organelle cellular anatomical entity organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen replisome catalytic complex telomerase holoenzyme complex ribonucleoprotein complex chromosome, telomeric region chromosomal region
D [auth E]	Telomerase holoenzyme Teb2 subunit	DNA binding binding organic cyclic compound binding nucleic acid binding	-	membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle nuclear replisome replication fork non-membrane-bounded organelle DNA replication factor A complex membrane-bounded organelle protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle nuclear replisome replication fork non-membrane-bounded organelle DNA replication factor A complex protein-DNA complex nuclear replication fork intracellular membrane-bounded organelle cellular anatomical entity organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen replisome catalytic complex telomerase holoenzyme complex ribonucleoprotein complex chromosome, telomeric region chromosomal region
E [auth B]	RNA (159-MER)	-	-	-
F [auth C]	DNA (5'-D(PGPTPTPGPGPGPGPTPTPGPGPGPGPTPTPGPGPGP*G)-3')	-	-	-
G	Telomerase-associated protein 50	-	-	-
H	Telomerase associated protein p65	RNA binding binding telomerase RNA binding organic cyclic compound binding nucleic acid binding	regulation of cellular process negative regulation of biological process regulation of primary metabolic process nucleobase-containing compound metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process organic substance biosynthetic process telomerase RNA stabilization negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological quality RNA catabolic process regulation of biological process negative regulation of metabolic process regulation of cellular process negative regulation of biological process regulation of primary metabolic process nucleobase-containing compound metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process organic substance biosynthetic process telomerase RNA stabilization negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological quality RNA catabolic process regulation of biological process negative regulation of metabolic process cellular metabolic process primary metabolic process regulation of cellular metabolic process nucleobase-containing compound catabolic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process nucleic acid catabolic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of metabolic process negative regulation of RNA metabolic process catabolic process cellular biosynthetic process RNA metabolic process macromolecule catabolic process organic substance metabolic process negative regulation of macromolecule metabolic process negative regulation of catabolic process regulation of biosynthetic process biological regulation negative regulation of RNA catabolic process regulation of macromolecule metabolic process regulation of catabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound catabolic process regulation of cellular biosynthetic process RNA stabilization regulation of RNA stability cellular process organic substance catabolic process telomere organization RNA-templated DNA biosynthetic process telomere maintenance via telomere lengthening cellular component organization nucleic acid biosynthetic process cellular component organization or biogenesis telomere maintenance via telomerase chromosome organization DNA metabolic process nucleobase-containing compound biosynthetic process telomere maintenance organelle organization organic cyclic compound biosynthetic process DNA biosynthetic process ribonucleoprotein complex biogenesis telomerase holoenzyme complex assembly protein-containing complex organization telomerase catalytic core complex assembly protein-RNA complex assembly cellular component biogenesis protein-RNA complex organization cellular component assembly protein-containing complex assembly	membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle chromosome membrane-bounded organelle protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle cellular anatomical entity intracellular organelle telomerase holoenzyme complex organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle chromosome chromosome, telomeric region chromosomal region non-membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000477	Reverse transcriptase domain	Domain
A	IPR021891	Telomerase ribonucleoprotein complex - RNA-binding domain	Domain
A	IPR003545	Telomerase reverse transcriptase	Family
B [auth D]	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
B [auth D]	IPR047192	Replication factor A, C-terminal, eukaryotes	Domain
B [auth D]	IPR013955	Replication factor A, C-terminal	Domain
C [auth F]	IPR013970	Replication factor A protein 3	Family
C [auth F]	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
D [auth E]	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
H	IPR014886	La protein, xRRM domain	Domain
H	IPR000504	RNA recognition motif domain	Domain
H	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
H	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
H	IPR012677	Nucleotide-binding alpha-beta plait domain superfamily	Homologous Superfamily
H	IPR006630	La-type HTH domain	Domain
H	IPR045180	La domain containing protein	Family
H	IPR035979	RNA-binding domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.