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 58: Ubiquitin carboxyl-terminal hydrolase 21

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
Cysteine-type peptidase activity GO:0008234
Catalysis of the hydrolysis of 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.
4 B2GUX4 (/ISS) Q2KJ72 (/ISS) Q9QZL6 (/ISS) Q9UK80 (/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.
4 B2GUX4 (/ISS) Q2KJ72 (/ISS) Q9QZL6 (/ISS) Q9UK80 (/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.
3 B2GUX4 (/ISS) Q2KJ72 (/ISS) Q9UK80 (/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.
3 B2GUX4 (/ISS) Q2KJ72 (/ISS) Q9QZL6 (/ISS)
NEDD8-specific protease activity GO:0019784
Catalysis of the hydrolysis of NEDD8, a small ubiquitin-related modifier, from previously neddylated substrates.
3 B2GUX4 (/ISS) Q2KJ72 (/ISS) Q9QZL6 (/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 Q9QZL6 (/IDA) Q9UK80 (/IDA)
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 Q9QZL6 (/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 Q9UK80 (/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 Q9UK80 (/IMP)
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 Q9QZL6 (/ISO)
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 Q9UK80 (/IPI)
Cysteine-type peptidase activity GO:0008234
Catalysis of the hydrolysis of 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 Q9QZL6 (/IDA)
Cysteine-type peptidase activity GO:0008234
Catalysis of the hydrolysis of 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 Q9UK80 (/IMP)
Cysteine-type peptidase activity GO:0008234
Catalysis of the hydrolysis of 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 Q9QZL6 (/ISO)
NEDD8-specific protease activity GO:0019784
Catalysis of the hydrolysis of NEDD8, a small ubiquitin-related modifier, from previously neddylated substrates.
1 Q9UK80 (/IDA)
NEDD8-specific protease activity GO:0019784
Catalysis of the hydrolysis of NEDD8, a small ubiquitin-related modifier, from previously neddylated substrates.
1 Q9QZL6 (/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.
1 Q9QZL6 (/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.
1 Q9UK80 (/TAS)

There are 9 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
Histone deubiquitination GO:0016578
The modification of histones by removal of ubiquitin groups.
3 B2GUX4 (/ISS) Q2KJ72 (/ISS) Q9UK80 (/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.
3 B2GUX4 (/ISS) Q2KJ72 (/ISS) Q9UK80 (/ISS)
Histone deubiquitination GO:0016578
The modification of histones by removal of ubiquitin groups.
1 Q9QZL6 (/IDA)
Protein deubiquitination GO:0016579
The removal of one or more ubiquitin groups from a protein.
1 Q9UK80 (/TAS)
Central nervous system morphogenesis GO:0021551
The process in which the anatomical structure of the central nervous system is generated and organized. The central nervous system is the core nervous system that serves an integrating and coordinating function. In vertebrates it consists of the brain and spinal cord. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord.
1 E9QFQ5 (/IMP)
Neuron projection development GO:0031175
The process whose specific outcome is the progression of a neuron projection over time, from its formation to the mature structure. A neuron projection is any process extending from a neural cell, such as axons or dendrites (collectively called neurites).
1 B2GUX4 (/IMP)
Neuron projection development GO:0031175
The process whose specific outcome is the progression of a neuron projection over time, from its formation to the mature structure. A neuron projection is any process extending from a neural cell, such as axons or dendrites (collectively called neurites).
1 Q9QZL6 (/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 Q9QZL6 (/IDA)
Cranial skeletal system development GO:1904888
The process whose specific outcome is the progression of a cranial skeletal system over time, from its formation to the mature structure. The cranial skeletal system is the skeletal subdivision of the head, and includes the skull (cranium plus mandible), pharyngeal and/or hyoid apparatus.
1 E9QFQ5 (/IMP)

There are 9 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.
1 Q9QZL6 (/IC)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q9UK80 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q9QZL6 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q9UK80 (/TAS)
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 Q9UK80 (/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.
1 Q9QZL6 (/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.
1 Q9UK80 (/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.
1 Q9UK80 (/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.
1 Q9QZL6 (/ISO)
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