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:

"
S15/NS1, RNA-binding
".

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 5: ataxin-3 isoform X1

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 22 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 E2QUQ9 (/IPI) O35815 (/IPI) P54252 (/IPI) Q9CVD2 (/IPI) Q9CVD2 (/IPI)
Thiol-dependent ubiquitin-specific protease activity GO:0004843
Catalysis of the thiol-dependent hydrolysis of a peptide bond formed by the C-terminal glycine of ubiquitin and another protein.
3 Q9CVD2 (/IDA) Q9CVD2 (/IDA) Q9H3M9 (/IDA)
Thiol-dependent ubiquitin-specific protease activity GO:0004843
Catalysis of the thiol-dependent hydrolysis of a peptide bond formed by the C-terminal glycine of ubiquitin and another protein.
3 O35815 (/ISS) P54252 (/ISS) Q9W689 (/ISS)
Ubiquitin protein ligase binding GO:0031625
Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
3 P54252 (/IPI) Q9CVD2 (/IPI) Q9CVD2 (/IPI)
Ubiquitin protein ligase binding GO:0031625
Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
3 O35815 (/ISS) P54252 (/ISS) Q9W689 (/ISS)
Thiol-dependent ubiquitinyl hydrolase activity GO:0036459
Catalysis of the thiol-dependent hydrolysis of an ester, thioester, amide, peptide or isopeptide bond formed by the C-terminal glycine of ubiquitin.
3 O35815 (/ISS) P54252 (/ISS) Q9W689 (/ISS)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
ATPase binding GO:0051117
Interacting selectively and non-covalently with an ATPase, any enzyme that catalyzes the hydrolysis of ATP.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Lys63-specific deubiquitinase activity GO:0061578
Hydrolysis of Lys63-Linked ubiquitin unit(s) from a ubiquitinated protein.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Lys48-specific deubiquitinase activity GO:1990380
Hydrolysis of Lys48-linked ubiquitin unit(s) from a ubiquitinated protein.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
RNA polymerase II regulatory region DNA binding GO:0001012
Interacting selectively and non-covalently with a DNA region that controls the transcription of a region of DNA by RNA polymerase II. 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.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Ubiquitin protein ligase binding GO:0031625
Interacting selectively and non-covalently with a ubiquitin protein ligase enzyme, any of the E3 proteins.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Thiol-dependent ubiquitinyl hydrolase activity GO:0036459
Catalysis of the thiol-dependent hydrolysis of an ester, thioester, amide, peptide or isopeptide bond formed by the C-terminal glycine of ubiquitin.
2 Q9CVD2 (/IDA) Q9CVD2 (/IDA)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
ATPase binding GO:0051117
Interacting selectively and non-covalently with an ATPase, any enzyme that catalyzes the hydrolysis of ATP.
2 E2QUQ9 (/IPI) P54252 (/IPI)
ATPase binding GO:0051117
Interacting selectively and non-covalently with an ATPase, any enzyme that catalyzes the hydrolysis of ATP.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Lys63-specific deubiquitinase activity GO:0061578
Hydrolysis of Lys63-Linked ubiquitin unit(s) from a ubiquitinated protein.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Lys48-specific deubiquitinase activity GO:1990380
Hydrolysis of Lys48-linked ubiquitin unit(s) from a ubiquitinated protein.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
RNA polymerase II regulatory region DNA binding GO:0001012
Interacting selectively and non-covalently with a DNA region that controls the transcription of a region of DNA by RNA polymerase II. 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 O35815 (/IDA)
Thiol-dependent ubiquitinyl hydrolase activity GO:0036459
Catalysis of the thiol-dependent hydrolysis of an ester, thioester, amide, peptide or isopeptide bond formed by the C-terminal glycine of ubiquitin.
1 P54252 (/TAS)
Lys63-specific deubiquitinase activity GO:0061578
Hydrolysis of Lys63-Linked ubiquitin unit(s) from a ubiquitinated protein.
1 P54252 (/IDA)
Lys48-specific deubiquitinase activity GO:1990380
Hydrolysis of Lys48-linked ubiquitin unit(s) from a ubiquitinated protein.
1 P54252 (/IDA)

There are 43 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
Microtubule cytoskeleton organization GO:0000226
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising microtubules and their associated proteins.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Protein quality control for misfolded or incompletely synthesized proteins GO:0006515
The chemical reactions and pathways resulting in the breakdown of misfolded or attenuated proteins.
3 O35815 (/ISS) P54252 (/ISS) Q9W689 (/ISS)
Regulation of cell-substrate adhesion GO:0010810
Any process that modulates the frequency, rate or extent of cell-substrate adhesion. Cell-substrate adhesion is the attachment of a cell to the underlying substrate via adhesion molecules.
3 P54252 (/IMP) Q9CVD2 (/IMP) Q9CVD2 (/IMP)
Regulation of cell-substrate adhesion GO:0010810
Any process that modulates the frequency, rate or extent of cell-substrate adhesion. Cell-substrate adhesion is the attachment of a cell to the underlying substrate via adhesion molecules.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Actin cytoskeleton organization GO:0030036
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments and their associated proteins.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Monoubiquitinated protein deubiquitination GO:0035520
The removal of the ubiquitin group from a monoubiquitinated protein.
3 O35815 (/ISS) P54252 (/ISS) Q9W689 (/ISS)
Proteasome-mediated ubiquitin-dependent protein catabolic process GO:0043161
The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.
3 O35815 (/ISS) P54252 (/ISS) Q9W689 (/ISS)
Intermediate filament cytoskeleton organization GO:0045104
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising intermediate filaments and their associated proteins.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Protein K63-linked deubiquitination GO:0070536
A protein deubiquitination process in which a K63-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is removed from a protein.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Protein K48-linked deubiquitination GO:0071108
A protein deubiquitination process in which a K48-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 48 of the ubiquitin monomers, is removed from a protein.
3 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/ISS)
Cellular response to misfolded protein GO:0071218
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 misfolded protein stimulus.
3 O35815 (/ISS) P54252 (/ISS) Q9W689 (/ISS)
Microtubule cytoskeleton organization GO:0000226
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising microtubules and their associated proteins.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Ubiquitin-dependent protein catabolic process GO:0006511
The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of a ubiquitin group, or multiple ubiquitin groups, to the protein.
2 Q9CVD2 (/IMP) Q9CVD2 (/IMP)
Protein quality control for misfolded or incompletely synthesized proteins GO:0006515
The chemical reactions and pathways resulting in the breakdown of misfolded or attenuated proteins.
2 Q9CVD2 (/IMP) Q9CVD2 (/IMP)
Regulation of cell-substrate adhesion GO:0010810
Any process that modulates the frequency, rate or extent of cell-substrate adhesion. Cell-substrate adhesion is the attachment of a cell to the underlying substrate via adhesion molecules.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Protein deubiquitination GO:0016579
The removal of one or more ubiquitin groups from a protein.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Protein deubiquitination GO:0016579
The removal of one or more ubiquitin groups from a protein.
2 P54252 (/TAS) Q9H3M9 (/TAS)
Actin cytoskeleton organization GO:0030036
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments and their associated proteins.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Cellular response to heat GO:0034605
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
2 Q9CVD2 (/IMP) Q9CVD2 (/IMP)
Monoubiquitinated protein deubiquitination GO:0035520
The removal of the ubiquitin group from a monoubiquitinated protein.
2 Q9CVD2 (/IDA) Q9CVD2 (/IDA)
Exploration behavior GO:0035640
The specific behavior of an organism in response to a novel environment or stimulus.
2 Q9CVD2 (/IMP) Q9CVD2 (/IMP)
Proteasome-mediated ubiquitin-dependent protein catabolic process GO:0043161
The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of ubiquitin, and mediated by the proteasome.
2 Q9CVD2 (/IMP) Q9CVD2 (/IMP)
Intermediate filament cytoskeleton organization GO:0045104
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising intermediate filaments and their associated proteins.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Protein K63-linked deubiquitination GO:0070536
A protein deubiquitination process in which a K63-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is removed from a protein.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Protein K48-linked deubiquitination GO:0071108
A protein deubiquitination process in which a K48-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 48 of the ubiquitin monomers, is removed from a protein.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Cellular response to misfolded protein GO:0071218
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 misfolded protein stimulus.
2 Q9CVD2 (/IMP) Q9CVD2 (/IMP)
Positive regulation of ERAD pathway GO:1904294
Any process that activates or increases the frequency, rate or extent of ERAD pathway.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Protein localization to cytosolic proteasome complex involved in ERAD pathway GO:1904379
Any protein localization to cytosolic proteasome complex that is involved in ERAD pathway. Following their retrotranslocation out of the endoplasmic reticulum, protein substrates must be shuttled to the cytosolic proteasome for degradation.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Microtubule cytoskeleton organization GO:0000226
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising microtubules and their associated proteins.
1 P54252 (/IMP)
Nucleotide-excision repair GO:0006289
A DNA repair process in which a small region of the strand surrounding the damage is removed from the DNA helix as an oligonucleotide. The small gap left in the DNA helix is filled in by the sequential action of DNA polymerase and DNA ligase. Nucleotide excision repair recognizes a wide range of substrates, including damage caused by UV irradiation (pyrimidine dimers and 6-4 photoproducts) and chemicals (intrastrand cross-links and bulky adducts).
1 P54252 (/TAS)
Ubiquitin-dependent protein catabolic process GO:0006511
The chemical reactions and pathways resulting in the breakdown of a protein or peptide by hydrolysis of its peptide bonds, initiated by the covalent attachment of a ubiquitin group, or multiple ubiquitin groups, to the protein.
1 P54252 (/ISS)
Chemical synaptic transmission GO:0007268
The vesicular release of classical neurotransmitter molecules from a presynapse, across a chemical synapse, the subsequent activation of neurotransmitter receptors at the postsynapse of a target cell (neuron, muscle, or secretory cell) and the effects of this activation on the postsynaptic membrane potential and ionic composition of the postsynaptic cytosol. This process encompasses both spontaneous and evoked release of neurotransmitter and all parts of synaptic vesicle exocytosis. Evoked transmission starts with the arrival of an action potential at the presynapse.
1 P54252 (/TAS)
Nervous system development GO:0007399
The process whose specific outcome is the progression of nervous tissue over time, from its formation to its mature state.
1 P54252 (/TAS)
Protein deubiquitination GO:0016579
The removal of one or more ubiquitin groups from a protein.
1 Q9H3M9 (/IDA)
Protein deubiquitination GO:0016579
The removal of one or more ubiquitin groups from a protein.
1 P54252 (/IMP)
Actin cytoskeleton organization GO:0030036
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments and their associated proteins.
1 P54252 (/IMP)
Cellular response to heat GO:0034605
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
1 P54252 (/ISS)
Intermediate filament cytoskeleton organization GO:0045104
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising intermediate filaments and their associated proteins.
1 P54252 (/IMP)
Protein K63-linked deubiquitination GO:0070536
A protein deubiquitination process in which a K63-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is removed from a protein.
1 P54252 (/IDA)
Histone H3 deacetylation GO:0070932
The modification of histone H3 by the removal of one or more acetyl groups.
1 O35815 (/IEP)
Protein K48-linked deubiquitination GO:0071108
A protein deubiquitination process in which a K48-linked ubiquitin chain, i.e. a polymer of ubiquitin formed by linkages between lysine residues at position 48 of the ubiquitin monomers, is removed from a protein.
1 P54252 (/IDA)
Positive regulation of ERAD pathway GO:1904294
Any process that activates or increases the frequency, rate or extent of ERAD pathway.
1 P54252 (/IMP)
Protein localization to cytosolic proteasome complex involved in ERAD pathway GO:1904379
Any protein localization to cytosolic proteasome complex that is involved in ERAD pathway. Following their retrotranslocation out of the endoplasmic reticulum, protein substrates must be shuttled to the cytosolic proteasome for degradation.
1 P54252 (/IMP)

There are 19 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
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.
11 A0A087WXY4 (/IDA) A0A087X1A8 (/IDA) A0A0A0MS38 (/IDA) D3VVH9 (/IDA) F5H211 (/IDA) G3V3R7 (/IDA) G3V4U9 (/IDA) O35815 (/IDA) P54252 (/IDA) Q9CVD2 (/IDA)
(1 more)
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.
8 A0A087WXY4 (/IDA) A0A087X1A8 (/IDA) A0A0A0MS38 (/IDA) D3VVH9 (/IDA) F5H211 (/IDA) G3V3R7 (/IDA) G3V4U9 (/IDA) P54252 (/IDA)
Plasma membrane GO:0005886
The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
8 A0A087WXY4 (/IDA) A0A087X1A8 (/IDA) A0A0A0MS38 (/IDA) D3VVH9 (/IDA) F5H211 (/IDA) G3V3R7 (/IDA) G3V4U9 (/IDA) P54252 (/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 O35815 (/ISS) Q9CVD2 (/ISS) Q9CVD2 (/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 Q9CVD2 (/ISO) Q9CVD2 (/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.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 Q9CVD2 (/IDA) Q9CVD2 (/IDA)
Mitochondrial matrix GO:0005759
The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
2 Q9CVD2 (/IDA) Q9CVD2 (/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.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
2 P54252 (/TAS) Q9H3M9 (/TAS)
Plasma membrane GO:0005886
The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
2 Q9CVD2 (/ISO) Q9CVD2 (/ISO)
Mitochondrial membrane GO:0031966
Either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope.
2 Q9CVD2 (/IDA) Q9CVD2 (/IDA)
Nuclear inclusion body GO:0042405
An intranuclear focus at which aggregated proteins have been sequestered.
2 Q9CVD2 (/IDA) Q9CVD2 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 P54252 (/TAS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 P54252 (/TAS)
Mitochondrial matrix GO:0005759
The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
1 P54252 (/ISS)
Cytosol GO:0005829
The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
1 P54252 (/IDA)
Mitochondrial membrane GO:0031966
Either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope.
1 P54252 (/ISS)
Nuclear inclusion body GO:0042405
An intranuclear focus at which aggregated proteins have been sequestered.
1 P54252 (/ISS)
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