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:

"
Helix-hairpin-Helix base-excision DNA repair enzymes (C-terminal)
".

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 5753: 8-oxoguanine DNA glycosylase isoform

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 17 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
Damaged DNA binding GO:0003684
Interacting selectively and non-covalently with damaged DNA.
2 O15527 (/IDA) O70249 (/IDA)
Oxidized purine nucleobase lesion DNA N-glycosylase activity GO:0008534
Catalysis of the removal of oxidized purine bases by cleaving the N-C1' glycosidic bond between the oxidized purine and the deoxyribose sugar. The reaction involves the formation of a covalent enzyme-substrate intermediate. Release of the enzyme and free base by a beta-elimination or a beta, gamma-elimination mechanism results in the cleavage of the DNA backbone 3' of the apurinic (AP) site.
2 O08760 (/IDA) O70249 (/IDA)
Oxidized base lesion DNA N-glycosylase activity GO:0000702
Catalysis of the removal of oxidized bases by cleaving the N-C1' glycosidic bond between the target damaged DNA base and the deoxyribose sugar. The reaction releases a free base and leaves an apurinic/apyrimidinic (AP) site.
1 O08760 (/TAS)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 O08760 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 O08760 (/ISO)
Damaged DNA binding GO:0003684
Interacting selectively and non-covalently with damaged DNA.
1 O08760 (/ISO)
Damaged DNA binding GO:0003684
Interacting selectively and non-covalently with damaged DNA.
1 O15527 (/TAS)
Endonuclease activity GO:0004519
Catalysis of the hydrolysis of ester linkages within nucleic acids by creating internal breaks.
1 O15527 (/TAS)
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).
1 O15527 (/IPI)
Microtubule binding GO:0008017
Interacting selectively and non-covalently with microtubules, filaments composed of tubulin monomers.
1 O08760 (/IDA)
Oxidized purine nucleobase lesion DNA N-glycosylase activity GO:0008534
Catalysis of the removal of oxidized purine bases by cleaving the N-C1' glycosidic bond between the oxidized purine and the deoxyribose sugar. The reaction involves the formation of a covalent enzyme-substrate intermediate. Release of the enzyme and free base by a beta-elimination or a beta, gamma-elimination mechanism results in the cleavage of the DNA backbone 3' of the apurinic (AP) site.
1 O08760 (/IMP)
Oxidized purine nucleobase lesion DNA N-glycosylase activity GO:0008534
Catalysis of the removal of oxidized purine bases by cleaving the N-C1' glycosidic bond between the oxidized purine and the deoxyribose sugar. The reaction involves the formation of a covalent enzyme-substrate intermediate. Release of the enzyme and free base by a beta-elimination or a beta, gamma-elimination mechanism results in the cleavage of the DNA backbone 3' of the apurinic (AP) site.
1 O15527 (/TAS)
DNA N-glycosylase activity GO:0019104
Catalysis of the removal of damaged bases by cleaving the N-C1' glycosidic bond between the target damaged DNA base and the deoxyribose sugar. The reaction releases a free base and leaves an apurinic/apyrimidinic (AP) site.
1 O70249 (/IDA)
DNA N-glycosylase activity GO:0019104
Catalysis of the removal of damaged bases by cleaving the N-C1' glycosidic bond between the target damaged DNA base and the deoxyribose sugar. The reaction releases a free base and leaves an apurinic/apyrimidinic (AP) site.
1 O08760 (/TAS)
Oxidized purine DNA binding GO:0032357
Interacting selectively and non-covalently with oxidized purine residues in DNA.
1 O15527 (/IDA)
Oxidized purine DNA binding GO:0032357
Interacting selectively and non-covalently with oxidized purine residues in DNA.
1 O08760 (/ISO)
8-oxo-7,8-dihydroguanine DNA N-glycosylase activity GO:0034039
Catalysis of the removal of 8-oxo-7,8-dihydroguanine bases by cleaving the N-C1' glycosidic bond between the oxidized purine and the deoxyribose sugar.
1 O08760 (/IMP)

There are 35 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
Base-excision repair GO:0006284
In base excision repair, an altered base is removed by a DNA glycosylase enzyme, followed by excision of the resulting sugar phosphate. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase.
2 O08760 (/IDA) O70249 (/IDA)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
2 O08760 (/ISS) O70249 (/ISS)
Response to oxidative stress GO:0006979
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
2 O08760 (/ISS) O70249 (/ISS)
Response to radiation GO:0009314
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an electromagnetic radiation stimulus. Electromagnetic radiation is a propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation.
2 O08760 (/ISS) O70249 (/ISS)
Regulation of protein import into nucleus, translocation GO:0033158
Any process that modulates the vectorial transfer of a protein from the cytoplasm into the nucleus, across the nuclear membrane.
2 O08760 (/ISS) O70249 (/ISS)
Acute inflammatory response GO:0002526
Inflammation which comprises a rapid, short-lived, relatively uniform response to acute injury or antigenic challenge and is characterized by accumulations of fluid, plasma proteins, and granulocytic leukocytes. An acute inflammatory response occurs within a matter of minutes or hours, and either resolves within a few days or becomes a chronic inflammatory response.
1 O70249 (/IEP)
DNA repair GO:0006281
The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
1 O08760 (/IGI)
DNA repair GO:0006281
The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
1 O08760 (/IMP)
Base-excision repair GO:0006284
In base excision repair, an altered base is removed by a DNA glycosylase enzyme, followed by excision of the resulting sugar phosphate. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase.
1 O08760 (/IMP)
Base-excision repair GO:0006284
In base excision repair, an altered base is removed by a DNA glycosylase enzyme, followed by excision of the resulting sugar phosphate. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase.
1 O15527 (/TAS)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
1 O15527 (/IMP)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
1 O08760 (/ISO)
Cellular response to DNA damage stimulus GO:0006974
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
1 O15527 (/IGI)
Cellular response to DNA damage stimulus GO:0006974
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
1 O08760 (/ISO)
Response to oxidative stress GO:0006979
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
1 O15527 (/IDA)
Response to oxidative stress GO:0006979
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
1 O08760 (/ISO)
Aging GO:0007568
A developmental process that is a deterioration and loss of function over time. Aging includes loss of functions such as resistance to disease, homeostasis, and fertility, as well as wear and tear. Aging includes cellular senescence, but is more inclusive. May precede death and may succeed developmental maturation (GO:0021700).
1 O70249 (/IDA)
Aging GO:0007568
A developmental process that is a deterioration and loss of function over time. Aging includes loss of functions such as resistance to disease, homeostasis, and fertility, as well as wear and tear. Aging includes cellular senescence, but is more inclusive. May precede death and may succeed developmental maturation (GO:0021700).
1 O70249 (/IEP)
Response to radiation GO:0009314
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an electromagnetic radiation stimulus. Electromagnetic radiation is a propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation.
1 O15527 (/IDA)
Response to radiation GO:0009314
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an electromagnetic radiation stimulus. Electromagnetic radiation is a propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other and to the direction of propagation.
1 O08760 (/ISO)
Response to light stimulus GO:0009416
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a light stimulus, electromagnetic radiation of wavelengths classified as infrared, visible or ultraviolet light.
1 O70249 (/IEP)
Response to estradiol GO:0032355
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of stimulus by estradiol, a C18 steroid hormone hydroxylated at C3 and C17 that acts as a potent estrogen.
1 O70249 (/IDA)
Regulation of protein import into nucleus, translocation GO:0033158
Any process that modulates the vectorial transfer of a protein from the cytoplasm into the nucleus, across the nuclear membrane.
1 O15527 (/IDA)
Regulation of protein import into nucleus, translocation GO:0033158
Any process that modulates the vectorial transfer of a protein from the cytoplasm into the nucleus, across the nuclear membrane.
1 O08760 (/ISO)
Nucleotide-excision repair, DNA incision GO:0033683
A process that results in the endonucleolytic cleavage of the damaged strand of DNA. The incision occurs at the junction of single-stranded DNA and double-stranded DNA that is formed when the DNA duplex is unwound.
1 O15527 (/IDA)
Nucleotide-excision repair, DNA incision GO:0033683
A process that results in the endonucleolytic cleavage of the damaged strand of DNA. The incision occurs at the junction of single-stranded DNA and double-stranded DNA that is formed when the DNA duplex is unwound.
1 O08760 (/ISO)
Response to drug GO:0042493
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
1 O70249 (/IEP)
Negative regulation of apoptotic process GO:0043066
Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
1 O70249 (/IMP)
Depurination GO:0045007
The disruption of the bond between the sugar in the backbone and the A or G base, causing the base to be removed and leaving a depurinated sugar.
1 O15527 (/TAS)
Depyrimidination GO:0045008
The disruption of the bond between the sugar in the backbone and the C or T base, causing the base to be removed and leaving a depyrimidinated sugar.
1 O15527 (/TAS)
Response to ethanol GO:0045471
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an ethanol stimulus.
1 O70249 (/IEP)
Response to folic acid GO:0051593
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a folic acid stimulus.
1 O70249 (/IEP)
Cellular response to cadmium ion GO:0071276
Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cadmium (Cd) ion stimulus.
1 O70249 (/IEP)
Negative regulation of double-strand break repair via single-strand annealing GO:1901291
Any process that stops, prevents or reduces the frequency, rate or extent of double-strand break repair via single-strand annealing.
1 O15527 (/IDA)
Negative regulation of double-strand break repair via single-strand annealing GO:1901291
Any process that stops, prevents or reduces the frequency, rate or extent of double-strand break repair via single-strand annealing.
1 O08760 (/ISO)

There are 17 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
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
6 E5KPM5 (/IDA) E5KPM7 (/IDA) E5KPM9 (/IDA) E5KPN0 (/IDA) E5KPN1 (/IDA) O15527 (/IDA)
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 O15527 (/IDA) O70249 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
2 O08760 (/ISS) O70249 (/ISS)
Mitochondrion GO:0005739
A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
2 O08760 (/IDA) O70249 (/IDA)
Nuclear matrix GO:0016363
The dense fibrillar network lying on the inner side of the nuclear membrane.
2 O08760 (/ISS) O70249 (/ISS)
Nuclear speck GO:0016607
A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.
2 O08760 (/ISS) O70249 (/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.
1 O08760 (/IMP)
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 O08760 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 O08760 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 O15527 (/TAS)
Mitochondrion GO:0005739
A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
1 O08760 (/IMP)
Nuclear matrix GO:0016363
The dense fibrillar network lying on the inner side of the nuclear membrane.
1 O15527 (/IDA)
Nuclear matrix GO:0016363
The dense fibrillar network lying on the inner side of the nuclear membrane.
1 O08760 (/ISO)
Nuclear speck GO:0016607
A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.
1 O15527 (/IDA)
Nuclear speck GO:0016607
A discrete extra-nucleolar subnuclear domain, 20-50 in number, in which splicing factors are seen to be localized by immunofluorescence microscopy.
1 O08760 (/ISO)
Protein complex GO:0043234
A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.
1 O15527 (/IDA)
Protein complex GO:0043234
A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.
1 O08760 (/ISO)
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