The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was named:

"
SAP domain
".

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 7: X-ray repair cross complementing 6

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 18 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).
6 E9PT85 (/IPI) P12956 (/IPI) P12956 (/IPI) P12956 (/IPI) P23475 (/IPI) Q6AZ64 (/IPI)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
3 P12956 (/NAS) P12956 (/NAS) P12956 (/NAS)
DNA helicase activity GO:0003678
Catalysis of the reaction: ATP + H2O = ADP + phosphate; this reaction drives the unwinding of the DNA helix.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Double-stranded DNA binding GO:0003690
Interacting selectively and non-covalently with double-stranded DNA.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
3 P12956 (/HDA) P12956 (/HDA) P12956 (/HDA)
Protein C-terminus binding GO:0008022
Interacting selectively and non-covalently with a protein C-terminus, the end of any peptide chain at which the 1-carboxyl function of a constituent amino acid is not attached in peptide linkage to another amino-acid residue.
3 P12956 (/IPI) P12956 (/IPI) P12956 (/IPI)
Cyclin binding GO:0030332
Interacting selectively and non-covalently with cyclins, proteins whose levels in a cell varies markedly during the cell cycle, rising steadily until mitosis, then falling abruptly to zero. As cyclins reach a threshold level, they are thought to drive cells into G2 phase and thus to mitosis.
3 P12956 (/IPI) P12956 (/IPI) P12956 (/IPI)
Transcription regulatory region DNA binding GO:0044212
Interacting selectively and non-covalently with a DNA region that regulates the transcription of a region of DNA, which may be a gene, cistron, or operon. Binding may occur as a sequence specific interaction or as an interaction observed only once a factor has been recruited to the DNA by other factors.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
3 P12956 (/IPI) P12956 (/IPI) P12956 (/IPI)
5'-deoxyribose-5-phosphate lyase activity GO:0051575
Catalysis of the beta-elimination of the 5' deoxyribose-5-phosphate at an abasic site in DNA where a DNA-(apurinic or apyrimidinic site) lyase has already cleaved the C-O-P bond 3' to the apurinic or apyrimidinic site.
3 P12956 (/IMP) P12956 (/IMP) P12956 (/IMP)
5'-deoxyribose-5-phosphate lyase activity GO:0051575
Catalysis of the beta-elimination of the 5' deoxyribose-5-phosphate at an abasic site in DNA where a DNA-(apurinic or apyrimidinic site) lyase has already cleaved the C-O-P bond 3' to the apurinic or apyrimidinic site.
2 O93257 (/ISS) P23475 (/ISS)
Double-stranded DNA binding GO:0003690
Interacting selectively and non-covalently with double-stranded DNA.
1 P23475 (/IDA)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
1 O93257 (/ISS)
Protein C-terminus binding GO:0008022
Interacting selectively and non-covalently with a protein C-terminus, the end of any peptide chain at which the 1-carboxyl function of a constituent amino acid is not attached in peptide linkage to another amino-acid residue.
1 P23475 (/ISO)
Cyclin binding GO:0030332
Interacting selectively and non-covalently with cyclins, proteins whose levels in a cell varies markedly during the cell cycle, rising steadily until mitosis, then falling abruptly to zero. As cyclins reach a threshold level, they are thought to drive cells into G2 phase and thus to mitosis.
1 P23475 (/ISO)
Transcription regulatory region DNA binding GO:0044212
Interacting selectively and non-covalently with a DNA region that regulates the transcription of a region of DNA, which may be a gene, cistron, or operon. Binding may occur as a sequence specific interaction or as an interaction observed only once a factor has been recruited to the DNA by other factors.
1 P23475 (/ISO)
Protein-containing complex binding GO:0044877
Interacting selectively and non-covalently with a macromolecular complex.
1 P23475 (/ISO)
5'-deoxyribose-5-phosphate lyase activity GO:0051575
Catalysis of the beta-elimination of the 5' deoxyribose-5-phosphate at an abasic site in DNA where a DNA-(apurinic or apyrimidinic site) lyase has already cleaved the C-O-P bond 3' to the apurinic or apyrimidinic site.
1 P23475 (/ISO)

There are 42 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
Double-strand break repair via nonhomologous end joining GO:0006303
The repair of a double-strand break in DNA in which the two broken ends are rejoined with little or no sequence complementarity. Information at the DNA ends may be lost due to the modification of broken DNA ends. This term covers instances of separate pathways, called classical (or canonical) and alternative nonhomologous end joining (C-NHEJ and A-NHEJ). These in turn may further branch into sub-pathways, but evidence is still unclear.
4 P12956 (/IMP) P12956 (/IMP) P12956 (/IMP) P23475 (/IMP)
Double-strand break repair via nonhomologous end joining GO:0006303
The repair of a double-strand break in DNA in which the two broken ends are rejoined with little or no sequence complementarity. Information at the DNA ends may be lost due to the modification of broken DNA ends. This term covers instances of separate pathways, called classical (or canonical) and alternative nonhomologous end joining (C-NHEJ and A-NHEJ). These in turn may further branch into sub-pathways, but evidence is still unclear.
4 O93257 (/TAS) P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Response to ionizing radiation GO:0010212
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 ionizing radiation stimulus. Ionizing radiation is radiation with sufficient energy to remove electrons from atoms and may arise from spontaneous decay of unstable isotopes, resulting in alpha and beta particles and gamma rays. Ionizing radiation also includes X-rays.
4 A8KC26 (/IMP) F1QZ60 (/IMP) P23475 (/IMP) Q06IS3 (/IMP)
Telomere maintenance GO:0000723
Any process that contributes to the maintenance of proper telomeric length and structure by affecting and monitoring the activity of telomeric proteins, the length of telomeric DNA and the replication and repair of the DNA. These processes includes those that shorten, lengthen, replicate and repair the telomeric DNA sequences.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Activation of innate immune response GO:0002218
Any process that initiates an innate immune response. Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens. Examples of this process include activation of the hypersensitive response of Arabidopsis thaliana and activation of any NOD or TLR signaling pathway in vertebrate species.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
DNA ligation GO:0006266
The re-formation of a broken phosphodiester bond in the DNA backbone, carried out by DNA ligase.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Positive regulation of type I interferon production GO:0032481
Any process that activates or increases the frequency, rate, or extent of type I interferon production. Type I interferons include the interferon-alpha, beta, delta, episilon, zeta, kappa, tau, and omega gene families.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Neutrophil degranulation GO:0043312
The regulated exocytosis of secretory granules containing preformed mediators such as proteases, lipases, and inflammatory mediators by a neutrophil.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Positive regulation of protein kinase activity GO:0045860
Any process that activates or increases the frequency, rate or extent of protein kinase activity.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
3 P12956 (/IMP) P12956 (/IMP) P12956 (/IMP)
Positive regulation of transcription, DNA-templated GO:0045893
Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Positive regulation of transcription, DNA-templated GO:0045893
Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
3 P12956 (/IMP) P12956 (/IMP) P12956 (/IMP)
Positive regulation of transcription by RNA polymerase II GO:0045944
Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
3 P12956 (/IMP) P12956 (/IMP) P12956 (/IMP)
Regulation of smooth muscle cell proliferation GO:0048660
Any process that modulates the frequency, rate or extent of smooth muscle cell proliferation.
3 P12956 (/IMP) P12956 (/IMP) P12956 (/IMP)
Protein heterotetramerization GO:0051290
The formation of a protein heterotetramer, a macromolecular structure consisting of four noncovalently associated subunits, of which not all are identical.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Cellular response to gamma radiation GO:0071480
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 gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Establishment of integrated proviral latency GO:0075713
A process by which the virus integrates into the host genome and establishes as a stable provirus or prophage.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Double-strand break repair via classical nonhomologous end joining GO:0097680
An instance of double-strand break repair via nonhomologous end joining that requires a number of factors important for V(D)J recombination, including the KU70/80 heterodimer (KU), XRCC4, ligase IV, and DNA-PKcs in mammals. It does not produce translocations (as opposed to the alternative nonhomologous end joining).
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Double-strand break repair GO:0006302
The repair of double-strand breaks in DNA via homologous and nonhomologous mechanisms to reform a continuous DNA helix.
2 E9PT85 (/TAS) Q6AZ64 (/TAS)
Double-strand break repair via nonhomologous end joining GO:0006303
The repair of a double-strand break in DNA in which the two broken ends are rejoined with little or no sequence complementarity. Information at the DNA ends may be lost due to the modification of broken DNA ends. This term covers instances of separate pathways, called classical (or canonical) and alternative nonhomologous end joining (C-NHEJ and A-NHEJ). These in turn may further branch into sub-pathways, but evidence is still unclear.
2 O93257 (/ISS) P23475 (/ISS)
Brain development GO:0007420
The process whose specific outcome is the progression of the brain over time, from its formation to the mature structure. Brain development begins with patterning events in the neural tube and ends with the mature structure that is the center of thought and emotion. The brain is responsible for the coordination and control of bodily activities and the interpretation of information from the senses (sight, hearing, smell, etc.).
2 E9PT85 (/IEP) Q6AZ64 (/IEP)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
2 O93257 (/ISS) P23475 (/ISS)
Cellular hyperosmotic salinity response GO:0071475
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 detection of, or exposure to, an increase in the concentration of salt (particularly but not exclusively sodium and chloride ions) in the environment.
2 E9PT85 (/IDA) Q6AZ64 (/IDA)
Cellular response to gamma radiation GO:0071480
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 gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum.
2 O93257 (/ISS) P23475 (/ISS)
Cellular response to X-ray GO:0071481
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 X-ray radiation. An X-ray is a form of electromagnetic radiation with a wavelength in the range of 10 nanometers to 100 picometers (corresponding to frequencies in the range 30 PHz to 3 EHz).
2 E9PT85 (/IDA) Q6AZ64 (/IDA)
Activation of innate immune response GO:0002218
Any process that initiates an innate immune response. Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens. Examples of this process include activation of the hypersensitive response of Arabidopsis thaliana and activation of any NOD or TLR signaling pathway in vertebrate species.
1 P23475 (/ISO)
Double-strand break repair GO:0006302
The repair of double-strand breaks in DNA via homologous and nonhomologous mechanisms to reform a continuous DNA helix.
1 P23475 (/IMP)
Double-strand break repair via nonhomologous end joining GO:0006303
The repair of a double-strand break in DNA in which the two broken ends are rejoined with little or no sequence complementarity. Information at the DNA ends may be lost due to the modification of broken DNA ends. This term covers instances of separate pathways, called classical (or canonical) and alternative nonhomologous end joining (C-NHEJ and A-NHEJ). These in turn may further branch into sub-pathways, but evidence is still unclear.
1 P23475 (/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 P23475 (/IMP)
V(D)J recombination GO:0033151
The process in which immune receptor V, D, and J, or V and J gene segments, depending on the specific receptor, are recombined within a single locus utilizing the conserved heptamer and nonomer recombination signal sequences (RSS).
1 P23475 (/IMP)
Positive regulation of protein kinase activity GO:0045860
Any process that activates or increases the frequency, rate or extent of protein kinase activity.
1 P23475 (/ISO)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
1 P23475 (/ISO)
Positive regulation of transcription, DNA-templated GO:0045893
Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
1 P23475 (/ISO)
Positive regulation of transcription by RNA polymerase II GO:0045944
Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
1 P23475 (/ISO)
Regulation of smooth muscle cell proliferation GO:0048660
Any process that modulates the frequency, rate or extent of smooth muscle cell proliferation.
1 P23475 (/ISO)
Regulation of smooth muscle cell proliferation GO:0048660
Any process that modulates the frequency, rate or extent of smooth muscle cell proliferation.
1 P23475 (/ISS)
Positive regulation of neurogenesis GO:0050769
Any process that activates or increases the frequency, rate or extent of neurogenesis, the generation of cells within the nervous system.
1 P23475 (/IMP)
Protein heterotetramerization GO:0051290
The formation of a protein heterotetramer, a macromolecular structure consisting of four noncovalently associated subunits, of which not all are identical.
1 P23475 (/ISO)
Cellular hyperosmotic salinity response GO:0071475
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 detection of, or exposure to, an increase in the concentration of salt (particularly but not exclusively sodium and chloride ions) in the environment.
1 P23475 (/ISO)
Cellular response to gamma radiation GO:0071480
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 gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum.
1 P23475 (/ISO)
Cellular response to X-ray GO:0071481
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 X-ray radiation. An X-ray is a form of electromagnetic radiation with a wavelength in the range of 10 nanometers to 100 picometers (corresponding to frequencies in the range 30 PHz to 3 EHz).
1 P23475 (/ISO)
Double-strand break repair via classical nonhomologous end joining GO:0097680
An instance of double-strand break repair via nonhomologous end joining that requires a number of factors important for V(D)J recombination, including the KU70/80 heterodimer (KU), XRCC4, ligase IV, and DNA-PKcs in mammals. It does not produce translocations (as opposed to the alternative nonhomologous end joining).
1 P23475 (/ISO)

There are 31 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.
8 A0A024R1N4 (/IDA) A0A024R1N4 (/IDA) A0A024R1N4 (/IDA) B1AHC9 (/IDA) B1AHC9 (/IDA) P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Nucleolus GO:0005730
A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
5 E9PT85 (/IDA) P12956 (/IDA) P12956 (/IDA) P12956 (/IDA) Q6AZ64 (/IDA)
Protein-containing complex GO:0032991
A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which at least one component is a protein and the constituent parts function together.
5 E9PT85 (/IDA) P12956 (/IDA) P12956 (/IDA) P12956 (/IDA) Q6AZ64 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
4 O93257 (/TAS) P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
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 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
3 P12956 (/HDA) P12956 (/HDA) P12956 (/HDA)
Extracellular region GO:0005576
The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
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.
3 E9PT85 (/IDA) P23475 (/IDA) Q6AZ64 (/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.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Transcription factor complex GO:0005667
A protein complex that is capable of associating with DNA by direct binding, or via other DNA-binding proteins or complexes, and regulating transcription.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
3 E9PT85 (/IDA) P23475 (/IDA) Q6AZ64 (/IDA)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
3 P12956 (/HDA) P12956 (/HDA) P12956 (/HDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Protein-DNA complex GO:0032993
A macromolecular complex containing both protein and DNA molecules.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Secretory granule lumen GO:0034774
The volume enclosed by the membrane of a secretory granule.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Ku70:Ku80 complex GO:0043564
Heterodimeric protein complex composed of a 70 kDa and a 80 kDa subunit, binds DNA through a channel formed by the heterodimer. Functions in DNA double stranded break repair, chromosome maintenance, transcription regulation, V(D)J recombination, and activation of DNA-PK.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Nonhomologous end joining complex GO:0070419
A protein complex that plays a role in DNA double-strand break repair via nonhomologous end joining. Such complexes typically contain a specialized DNA ligase (e.g. Lig4 in eukaryotes) and one or more proteins that bind to DNA ends.
3 P12956 (/IDA) P12956 (/IDA) P12956 (/IDA)
Ficolin-1-rich granule lumen GO:1904813
Any membrane-enclosed lumen that is part of a ficolin-1-rich granule.
3 P12956 (/TAS) P12956 (/TAS) P12956 (/TAS)
Ku70:Ku80 complex GO:0043564
Heterodimeric protein complex composed of a 70 kDa and a 80 kDa subunit, binds DNA through a channel formed by the heterodimer. Functions in DNA double stranded break repair, chromosome maintenance, transcription regulation, V(D)J recombination, and activation of DNA-PK.
2 O93257 (/ISS) P23475 (/ISS)
Nonhomologous end joining complex GO:0070419
A protein complex that plays a role in DNA double-strand break repair via nonhomologous end joining. Such complexes typically contain a specialized DNA ligase (e.g. Lig4 in eukaryotes) and one or more proteins that bind to DNA ends.
2 O93257 (/ISS) P23475 (/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 P23475 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 P23475 (/ISO)
Transcription factor complex GO:0005667
A protein complex that is capable of associating with DNA by direct binding, or via other DNA-binding proteins or complexes, and regulating transcription.
1 P23475 (/ISO)
Nucleolus GO:0005730
A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
1 P23475 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 P23475 (/ISO)
Protein-containing complex GO:0032991
A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which at least one component is a protein and the constituent parts function together.
1 P23475 (/ISO)
Protein-DNA complex GO:0032993
A macromolecular complex containing both protein and DNA molecules.
1 P23475 (/ISO)
Ku70:Ku80 complex GO:0043564
Heterodimeric protein complex composed of a 70 kDa and a 80 kDa subunit, binds DNA through a channel formed by the heterodimer. Functions in DNA double stranded break repair, chromosome maintenance, transcription regulation, V(D)J recombination, and activation of DNA-PK.
1 P23475 (/ISO)
Nonhomologous end joining complex GO:0070419
A protein complex that plays a role in DNA double-strand break repair via nonhomologous end joining. Such complexes typically contain a specialized DNA ligase (e.g. Lig4 in eukaryotes) and one or more proteins that bind to DNA ends.
1 P23475 (/ISO)
Ribonucleoprotein complex GO:1990904
A macromolecular complex containing both protein and RNA molecules.
1 O93257 (/ISS)