The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Nucleic acid-binding proteins
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 51493: Protection of telomeres protein 1

Please note: GO annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

There are 20 GO terms relating to "molecular function"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Protein binding GO:0005515
Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
5 E7F0D5 (/IPI) H7BX60 (/IPI) Q91WC1 (/IPI) Q9NUX5 (/IPI) X1WGW8 (/IPI)
Telomeric DNA binding GO:0042162
Interacting selectively and non-covalently with a telomere, a specific structure at the end of a linear chromosome required for the integrity and maintenance of the end.
3 H7BX60 (/IDA) Q91WC1 (/IDA) Q9NUX5 (/IDA)
Single-stranded telomeric DNA binding GO:0043047
Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
3 H7BX60 (/IDA) Q91WC1 (/IDA) Q9NUX5 (/IDA)
Single-stranded telomeric DNA binding GO:0043047
Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
2 Q91WC1 (/ISS) Q95K48 (/ISS)
Telomerase inhibitor activity GO:0010521
Stops, prevents or reduces the activity of a telomerase. Telomerase catalyzes the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1). Catalyzes extension of the 3'- end of a DNA strand by one deoxynucleotide at a time using an internal RNA template that encodes the telomeric repeat sequence.
1 Q9NUX5 (/IDA)
Telomerase inhibitor activity GO:0010521
Stops, prevents or reduces the activity of a telomerase. Telomerase catalyzes the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1). Catalyzes extension of the 3'- end of a DNA strand by one deoxynucleotide at a time using an internal RNA template that encodes the telomeric repeat sequence.
1 Q91WC1 (/ISO)
Rab GTPase binding GO:0017137
Interacting selectively and non-covalently with Rab protein, any member of the Rab subfamily of the Ras superfamily of monomeric GTPases.
1 H7BX60 (/IDA)
DEAD/H-box RNA helicase binding GO:0017151
Interacting selectively and non-covalently with the enzyme DEAD/H-box RNA helicase.
1 Q9NUX5 (/IPI)
DEAD/H-box RNA helicase binding GO:0017151
Interacting selectively and non-covalently with the enzyme DEAD/H-box RNA helicase.
1 Q91WC1 (/ISO)
Oxidized purine DNA binding GO:0032357
Interacting selectively and non-covalently with oxidized purine residues in DNA.
1 Q91WC1 (/ISO)
Telomeric DNA binding GO:0042162
Interacting selectively and non-covalently with a telomere, a specific structure at the end of a linear chromosome required for the integrity and maintenance of the end.
1 Q91WC1 (/ISO)
Single-stranded telomeric DNA binding GO:0043047
Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
1 Q9NUX5 (/IMP)
Single-stranded telomeric DNA binding GO:0043047
Interacting selectively and non-covalently with single-stranded telomere-associated DNA.
1 Q91WC1 (/ISO)
Telomeric D-loop binding GO:0061821
Interacting selectively and non-covalently with a telomeric D-loop. A telomeric D-loop is a three-stranded DNA displacement loop that forms at the site where the telomeric 3' single-stranded DNA overhang (formed of the repeat sequence TTAGGG in mammals) is tucked back inside the double-stranded component of telomeric DNA molecule, thus forming a t-loop or telomeric-loop and protecting the chromosome terminus.
1 Q9NUX5 (/IDA)
Telomeric D-loop binding GO:0061821
Interacting selectively and non-covalently with a telomeric D-loop. A telomeric D-loop is a three-stranded DNA displacement loop that forms at the site where the telomeric 3' single-stranded DNA overhang (formed of the repeat sequence TTAGGG in mammals) is tucked back inside the double-stranded component of telomeric DNA molecule, thus forming a t-loop or telomeric-loop and protecting the chromosome terminus.
1 Q91WC1 (/ISO)
G-rich strand telomeric DNA binding GO:0098505
Interacting selectively and non-covalently with G-rich, single-stranded, telomere-associated DNA.
1 Q9NUX5 (/IDA)
G-rich strand telomeric DNA binding GO:0098505
Interacting selectively and non-covalently with G-rich, single-stranded, telomere-associated DNA.
1 Q91WC1 (/ISO)
8-hydroxy-2'-deoxyguanosine DNA binding GO:1905773
Interacting selectively and non-covalently with 8-hydroxy-2'-deoxyguanosine an oxidized purine residue found in damaged DNA.
1 Q9NUX5 (/IDA)
G-rich single-stranded DNA binding GO:1990955
Interacting selectively and non-covalently with G-rich, single-stranded DNA.
1 Q9NUX5 (/IDA)
G-rich single-stranded DNA binding GO:1990955
Interacting selectively and non-covalently with G-rich, single-stranded DNA.
1 Q91WC1 (/ISO)

There are 48 GO terms relating to "biological process"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Telomere maintenance via telomerase GO:0007004
The maintenance of proper telomeric length by the addition of telomeric repeats by telomerase.
2 Q91WC1 (/ISS) Q95K48 (/ISS)
Chromosome organization GO:0051276
A process that is carried out at the cellular level that results in the assembly, arrangement of constituent parts, or disassembly of chromosomes, structures composed of a very long molecule of DNA and associated proteins that carries hereditary information. This term covers covalent modifications at the molecular level as well as spatial relationships among the major components of a chromosome.
2 H7BX60 (/IGI) Q91WC1 (/IGI)
Regulation of cell growth GO:0001558
Any process that modulates the frequency, rate, extent or direction of cell growth.
1 H7BX60 (/IDA)
Telomere maintenance via telomerase GO:0007004
The maintenance of proper telomeric length by the addition of telomeric repeats by telomerase.
1 Q9NUX5 (/IDA)
Telomere maintenance via telomerase GO:0007004
The maintenance of proper telomeric length by the addition of telomeric repeats by telomerase.
1 Q91WC1 (/ISO)
Cell aging GO:0007569
An aging process that has as participant a cell after a cell has stopped dividing. Cell aging may occur when a cell has temporarily stopped dividing through cell cycle arrest (GO:0007050) or when a cell has permanently stopped dividing, in which case it is undergoing cellular senescence (GO:0090398). May precede cell death (GO:0008219) and succeed cell maturation (GO:0048469).
1 H7BX60 (/IDA)
Cell aging GO:0007569
An aging process that has as participant a cell after a cell has stopped dividing. Cell aging may occur when a cell has temporarily stopped dividing through cell cycle arrest (GO:0007050) or when a cell has permanently stopped dividing, in which case it is undergoing cellular senescence (GO:0090398). May precede cell death (GO:0008219) and succeed cell maturation (GO:0048469).
1 H7BX60 (/IGI)
Telomere capping GO:0016233
A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
1 H7BX60 (/IDA)
Telomere capping GO:0016233
A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
1 Q9NUX5 (/IGI)
Telomere capping GO:0016233
A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
1 Q9NUX5 (/IMP)
Telomere capping GO:0016233
A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
1 Q91WC1 (/ISO)
Telomere capping GO:0016233
A process in which telomeres are protected from degradation and fusion, thereby ensuring chromosome stability by protecting the ends from both degradation and from being recognized as damaged DNA. May be mediated by specific single- or double-stranded telomeric DNA binding proteins.
1 Q9NUX5 (/TAS)
Protection from non-homologous end joining at telomere GO:0031848
A process that prevents non-homologous end joining at telomere, thereby ensuring that telomeres do not fuse.
1 H7BX60 (/IDA)
Telomere assembly GO:0032202
A cellular process that results in the aggregation, arrangement and bonding together of a set of components to form a telomere at a non-telomeric double-stranded DNA end. A telomere is a terminal region of a linear chromosome that includes telomeric DNA repeats and associated proteins.
1 Q9NUX5 (/IDA)
Telomere assembly GO:0032202
A cellular process that results in the aggregation, arrangement and bonding together of a set of components to form a telomere at a non-telomeric double-stranded DNA end. A telomere is a terminal region of a linear chromosome that includes telomeric DNA repeats and associated proteins.
1 Q91WC1 (/ISO)
Regulation of telomere maintenance via telomerase GO:0032210
Any process that modulates the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q9NUX5 (/IGI)
Regulation of telomere maintenance via telomerase GO:0032210
Any process that modulates the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q91WC1 (/ISO)
Negative regulation of telomere maintenance via telomerase GO:0032211
Any process that stops, prevents, or reduces the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q9NUX5 (/IGI)
Negative regulation of telomere maintenance via telomerase GO:0032211
Any process that stops, prevents, or reduces the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q91WC1 (/ISO)
Negative regulation of telomere maintenance via telomerase GO:0032211
Any process that stops, prevents, or reduces the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q9NUX5 (/TAS)
Positive regulation of telomere maintenance via telomerase GO:0032212
Any process that activates or increases the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q9NUX5 (/IDA)
Positive regulation of telomere maintenance via telomerase GO:0032212
Any process that activates or increases the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q9NUX5 (/IMP)
Positive regulation of telomere maintenance via telomerase GO:0032212
Any process that activates or increases the frequency, rate or extent of the addition of telomeric repeats by telomerase.
1 Q91WC1 (/ISO)
DNA duplex unwinding GO:0032508
The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating a region of unpaired single strands.
1 Q9NUX5 (/IDA)
DNA duplex unwinding GO:0032508
The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating a region of unpaired single strands.
1 Q91WC1 (/ISO)
Regulation of GTPase activity GO:0043087
Any process that modulates the rate of GTP hydrolysis by a GTPase.
1 H7BX60 (/IMP)
Telomere maintenance in response to DNA damage GO:0043247
Any process that occur in response to the presence of critically short or damaged telomeres.
1 H7BX60 (/IDA)
Negative regulation of DNA recombination at telomere GO:0048239
Any process that stops, prevents, or reduces the frequency, rate or extent of genetic recombination within the telomere.
1 H7BX60 (/IDA)
Regulation of phagocytosis GO:0050764
Any process that modulates the frequency, rate or extent of phagocytosis, the process in which phagocytes engulf external particulate material.
1 H7BX60 (/IMP)
Positive regulation of helicase activity GO:0051096
Any process that activates or increases the activity of a helicase.
1 Q9NUX5 (/IDA)
Positive regulation of helicase activity GO:0051096
Any process that activates or increases the activity of a helicase.
1 Q91WC1 (/ISO)
Chromosome organization GO:0051276
A process that is carried out at the cellular level that results in the assembly, arrangement of constituent parts, or disassembly of chromosomes, structures composed of a very long molecule of DNA and associated proteins that carries hereditary information. This term covers covalent modifications at the molecular level as well as spatial relationships among the major components of a chromosome.
1 H7BX60 (/IDA)
Chromosome organization GO:0051276
A process that is carried out at the cellular level that results in the assembly, arrangement of constituent parts, or disassembly of chromosomes, structures composed of a very long molecule of DNA and associated proteins that carries hereditary information. This term covers covalent modifications at the molecular level as well as spatial relationships among the major components of a chromosome.
1 H7BX60 (/IMP)
Positive regulation of telomerase activity GO:0051973
Any process that activates or increases the frequency, rate or extent of telomerase activity, the catalysis of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
1 Q9NUX5 (/IDA)
Positive regulation of telomerase activity GO:0051973
Any process that activates or increases the frequency, rate or extent of telomerase activity, the catalysis of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
1 Q9NUX5 (/IMP)
Positive regulation of telomerase activity GO:0051973
Any process that activates or increases the frequency, rate or extent of telomerase activity, the catalysis of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
1 Q91WC1 (/ISO)
Negative regulation of telomerase activity GO:0051974
Any process that stops or reduces the activity of the enzyme telomerase, which catalyzes of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
1 Q9NUX5 (/IDA)
Negative regulation of telomerase activity GO:0051974
Any process that stops or reduces the activity of the enzyme telomerase, which catalyzes of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
1 Q91WC1 (/ISO)
Positive regulation of DNA strand elongation GO:0060383
Any process that increases the rate, frequency or extent of DNA strand elongation. DNA strand elongation is the DNA metabolic process in which a DNA strand is synthesized by adding nucleotides to the 3' end of an existing DNA stand.
1 Q9NUX5 (/IDA)
Positive regulation of DNA strand elongation GO:0060383
Any process that increases the rate, frequency or extent of DNA strand elongation. DNA strand elongation is the DNA metabolic process in which a DNA strand is synthesized by adding nucleotides to the 3' end of an existing DNA stand.
1 Q91WC1 (/ISO)
Telomeric D-loop disassembly GO:0061820
A telomere loop disassembly process that results in the disassembly of telomeric D-loops. A telomeric D-loop is a three-stranded DNA displacement loop that forms at the site where the telomeric 3' single-stranded DNA overhang (formed of the repeat sequence TTAGGG in mammals) is tucked back inside the double-stranded component of telomeric DNA molecule, thus forming a t-loop or telomeric-loop and protecting the chromosome terminus.
1 Q9NUX5 (/IGI)
Telomeric D-loop disassembly GO:0061820
A telomere loop disassembly process that results in the disassembly of telomeric D-loops. A telomeric D-loop is a three-stranded DNA displacement loop that forms at the site where the telomeric 3' single-stranded DNA overhang (formed of the repeat sequence TTAGGG in mammals) is tucked back inside the double-stranded component of telomeric DNA molecule, thus forming a t-loop or telomeric-loop and protecting the chromosome terminus.
1 Q91WC1 (/ISO)
Establishment of protein localization to telomere GO:0070200
The directed movement of a protein to a specific location in the telomeric region of a chromosome.
1 Q9NUX5 (/IMP)
Establishment of protein localization to telomere GO:0070200
The directed movement of a protein to a specific location in the telomeric region of a chromosome.
1 Q91WC1 (/ISO)
Regulation of DNA helicase activity GO:1905774
Any process that modulates the frequency, rate or extent of DNA helicase activity.
1 Q9NUX5 (/IDA)
Regulation of DNA helicase activity GO:1905774
Any process that modulates the frequency, rate or extent of DNA helicase activity.
1 Q91WC1 (/ISO)
Positive regulation of DNA helicase activity GO:1905776
Any process that activates or increases the frequency, rate or extent of DNA helicase activity.
1 Q9NUX5 (/IDA)
Positive regulation of DNA helicase activity GO:1905776
Any process that activates or increases the frequency, rate or extent of DNA helicase activity.
1 Q91WC1 (/ISO)

There are 14 GO terms relating to "cellular component"

The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.
GO Term Annotations Evidence
Nuclear telomere cap complex GO:0000783
A complex of DNA and protein located at the end of a linear chromosome in the nucleus that protects and stabilizes a linear chromosome.
3 H7BX60 (/IDA) Q91WC1 (/IDA) Q9NUX5 (/IDA)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
3 H7BX60 (/IDA) Q91WC1 (/IDA) Q9NUX5 (/IDA)
Chromosome, telomeric region GO:0000781
The terminal region of a linear chromosome that includes the telomeric DNA repeats and associated proteins.
2 Q91WC1 (/ISS) Q95K48 (/ISS)
Nucleus GO:0005634
A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
2 A0A024R739 (/IDA) Q9NUX5 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
2 Q91WC1 (/TAS) Q9NUX5 (/TAS)
Chromosome, telomeric region GO:0000781
The terminal region of a linear chromosome that includes the telomeric DNA repeats and associated proteins.
1 Q9NUX5 (/IDA)
Chromosome, telomeric region GO:0000781
The terminal region of a linear chromosome that includes the telomeric DNA repeats and associated proteins.
1 Q91WC1 (/ISO)
Nuclear telomere cap complex GO:0000783
A complex of DNA and protein located at the end of a linear chromosome in the nucleus that protects and stabilizes a linear chromosome.
1 Q91WC1 (/ISO)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
1 Q91WC1 (/ISO)
Nucleus GO:0005634
A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
1 Q91WC1 (/ISO)
Shelterin complex GO:0070187
A nuclear telomere cap complex that is formed by the association of telomeric ssDNA- and dsDNA-binding proteins with telomeric DNA, and is involved in telomere protection and recruitment of telomerase. The complex is known to contain TERF1, TERF2, POT1, RAP1, TINF2 and ACD in mammalian cells, and Pot1, Tpz1, Rap1, Rif1, Rif2 and Taz1 in Schizosaccharomyces. Taz1 and Rap1 (or their mammalian equivalents) form a dsDNA-binding subcomplex, Pot1 and Tpz1 form an ssDNA-binding subcomplex, and the two subcomplexes are bridged by Poz1, which acts as an effector molecule along with Ccq1.
1 Q9NUX5 (/IDA)
Shelterin complex GO:0070187
A nuclear telomere cap complex that is formed by the association of telomeric ssDNA- and dsDNA-binding proteins with telomeric DNA, and is involved in telomere protection and recruitment of telomerase. The complex is known to contain TERF1, TERF2, POT1, RAP1, TINF2 and ACD in mammalian cells, and Pot1, Tpz1, Rap1, Rif1, Rif2 and Taz1 in Schizosaccharomyces. Taz1 and Rap1 (or their mammalian equivalents) form a dsDNA-binding subcomplex, Pot1 and Tpz1 form an ssDNA-binding subcomplex, and the two subcomplexes are bridged by Poz1, which acts as an effector molecule along with Ccq1.
1 Q9NUX5 (/IMP)
Shelterin complex GO:0070187
A nuclear telomere cap complex that is formed by the association of telomeric ssDNA- and dsDNA-binding proteins with telomeric DNA, and is involved in telomere protection and recruitment of telomerase. The complex is known to contain TERF1, TERF2, POT1, RAP1, TINF2 and ACD in mammalian cells, and Pot1, Tpz1, Rap1, Rif1, Rif2 and Taz1 in Schizosaccharomyces. Taz1 and Rap1 (or their mammalian equivalents) form a dsDNA-binding subcomplex, Pot1 and Tpz1 form an ssDNA-binding subcomplex, and the two subcomplexes are bridged by Poz1, which acts as an effector molecule along with Ccq1.
1 Q91WC1 (/ISO)
Shelterin complex GO:0070187
A nuclear telomere cap complex that is formed by the association of telomeric ssDNA- and dsDNA-binding proteins with telomeric DNA, and is involved in telomere protection and recruitment of telomerase. The complex is known to contain TERF1, TERF2, POT1, RAP1, TINF2 and ACD in mammalian cells, and Pot1, Tpz1, Rap1, Rif1, Rif2 and Taz1 in Schizosaccharomyces. Taz1 and Rap1 (or their mammalian equivalents) form a dsDNA-binding subcomplex, Pot1 and Tpz1 form an ssDNA-binding subcomplex, and the two subcomplexes are bridged by Poz1, which acts as an effector molecule along with Ccq1.
1 Q9NUX5 (/TAS)