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:

"
Cysteine proteinases
".

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 82: Ubiquitin carboxyl-terminal hydrolase 16

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
Transcription coactivator activity GO:0003713
A protein or a member of a complex that interacts specifically and non-covalently with a DNA-bound DNA-binding transcription factor to activate the transcription of specific genes. Coactivators often act by altering chromatin structure and modifications. For example, one class of transcription coregulators modifies chromatin structure through covalent modification of histones. A second ATP-dependent class modifies the conformation of chromatin. Another type of coregulator activity is the bridging of a DNA-binding transcription factor to the basal transcription machinery. The Mediator complex, which bridges transcription factors and RNA polymerase, is also a transcription coactivator.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Cysteine-type endopeptidase activity GO:0004197
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
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.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Zinc ion binding GO:0008270
Interacting selectively and non-covalently with zinc (Zn) ions.
2 Q08DA3 (/ISS) Q4R6X7 (/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.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Histone binding GO:0042393
Interacting selectively and non-covalently with a histone, any of a group of water-soluble proteins found in association with the DNA of eukaroytic chromosomes. They are involved in the condensation and coiling of chromosomes during cell division and have also been implicated in nonspecific suppression of gene activity.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Ubiquitin binding GO:0043130
Interacting selectively and non-covalently with ubiquitin, a protein that when covalently bound to other cellular proteins marks them for proteolytic degradation.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Transcription coactivator activity GO:0003713
A protein or a member of a complex that interacts specifically and non-covalently with a DNA-bound DNA-binding transcription factor to activate the transcription of specific genes. Coactivators often act by altering chromatin structure and modifications. For example, one class of transcription coregulators modifies chromatin structure through covalent modification of histones. A second ATP-dependent class modifies the conformation of chromatin. Another type of coregulator activity is the bridging of a DNA-binding transcription factor to the basal transcription machinery. The Mediator complex, which bridges transcription factors and RNA polymerase, is also a transcription coactivator.
1 Q9Y5T5 (/IDA)
Cysteine-type endopeptidase activity GO:0004197
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
1 Q9Y5T5 (/IMP)
Cysteine-type endopeptidase activity GO:0004197
Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which the sulfhydryl group of a cysteine residue at the active center acts as a nucleophile.
1 Q9Y5T5 (/TAS)
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.
1 Q9Y5T5 (/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.
1 Q9Y5T5 (/TAS)
Zinc ion binding GO:0008270
Interacting selectively and non-covalently with zinc (Zn) ions.
1 Q9Y5T5 (/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 Q9Y5T5 (/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 Q9Y5T5 (/TAS)
Histone binding GO:0042393
Interacting selectively and non-covalently with a histone, any of a group of water-soluble proteins found in association with the DNA of eukaroytic chromosomes. They are involved in the condensation and coiling of chromosomes during cell division and have also been implicated in nonspecific suppression of gene activity.
1 Q9Y5T5 (/IDA)
Ubiquitin binding GO:0043130
Interacting selectively and non-covalently with ubiquitin, a protein that when covalently bound to other cellular proteins marks them for proteolytic degradation.
1 Q9Y5T5 (/IDA)

There are 18 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
Regulation of transcription by RNA polymerase II GO:0006357
Any process that modulates the frequency, rate or extent of transcription mediated by RNA polymerase II.
3 Q08DA3 (/ISS) Q4R6X7 (/ISS) Q9Y5T5 (/ISS)
Monoubiquitinated histone H2A deubiquitination GO:0035522
The removal of the ubiquitin group from a monoubiquitinated histone H2A protein.
3 Q08DA3 (/ISS) Q4R6X7 (/ISS) Q9Y5T5 (/ISS)
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 Q08DA3 (/ISS) Q4R6X7 (/ISS) Q9Y5T5 (/ISS)
Mitotic cell cycle GO:0000278
Progression through the phases of the mitotic cell cycle, the most common eukaryotic cell cycle, which canonically comprises four successive phases called G1, S, G2, and M and includes replication of the genome and the subsequent segregation of chromosomes into daughter cells. In some variant cell cycles nuclear replication or nuclear division may not be followed by cell division, or G1 and G2 phases may be absent.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Histone deubiquitination GO:0016578
The modification of histones by removal of ubiquitin groups.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Positive regulation of transcription, DNA-templated GO:0045893
Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Protein homotetramerization GO:0051289
The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.
2 Q08DA3 (/ISS) Q4R6X7 (/ISS)
Mitotic cell cycle GO:0000278
Progression through the phases of the mitotic cell cycle, the most common eukaryotic cell cycle, which canonically comprises four successive phases called G1, S, G2, and M and includes replication of the genome and the subsequent segregation of chromosomes into daughter cells. In some variant cell cycles nuclear replication or nuclear division may not be followed by cell division, or G1 and G2 phases may be absent.
1 Q9Y5T5 (/IDA)
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 Q9Y5T5 (/IDA)
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 Q4R6X7 (/ISS)
Histone deubiquitination GO:0016578
The modification of histones by removal of ubiquitin groups.
1 Q9Y5T5 (/IDA)
Protein deubiquitination GO:0016579
The removal of one or more ubiquitin groups from a protein.
1 Q9Y5T5 (/TAS)
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 Q9Y5T5 (/IMP)
Positive regulation of translational elongation GO:0045901
Any process that activates or increases the frequency, rate or extent of translational elongation.
1 Q9Y5T5 (/IMP)
Positive regulation of translational elongation GO:0045901
Any process that activates or increases the frequency, rate or extent of translational elongation.
1 Q4R6X7 (/ISS)
Protein homotetramerization GO:0051289
The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.
1 Q9Y5T5 (/IPI)
Histone H2A K63-linked deubiquitination GO:0070537
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 lysine residue in histone H2A or the variant H2AX.
1 Q9Y5T5 (/IMP)
Histone H2A K63-linked deubiquitination GO:0070537
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 lysine residue in histone H2A or the variant H2AX.
1 Q4R6X7 (/ISS)

There are 4 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.
2 Q08DA3 (/ISS) Q4R6X7 (/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 Q9Y5T5 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q9Y5T5 (/TAS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q9Y5T5 (/TAS)
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