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:

"
Ubiquitin Conjugating Enzyme
".

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 34: Ubiquitin-conjugating enzyme E2 S

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 8 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
Ubiquitin-protein transferase activity GO:0004842
Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.
6 B5DFI8 (/ISS) Q1RML1 (/ISS) Q921J4 (/ISS) Q921J4 (/ISS) Q9VX25 (/ISS) Q9VX25 (/ISS)
Ubiquitin-protein transferase activity GO:0004842
Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Anaphase-promoting complex binding GO:0010997
Interacting selectively and non-covalently with an anaphase-promoting complex. A ubiquitin ligase complex that degrades mitotic cyclins and anaphase inhibitory protein, thereby triggering sister chromatid separation and exit from mitosis.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Ubiquitin conjugating enzyme activity GO:0061631
Isoenergetic transfer of ubiquitin from one protein to another via the reaction X-ubiquitin + Y -> Y-ubiquitin + X, where both the X-ubiquitin and Y-ubiquitin linkages are thioester bonds between the C-terminal glycine of ubiquitin and a sulfhydryl side group of a cysteine residue.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Ubiquitin-protein transferase activity GO:0004842
Catalysis of the transfer of ubiquitin from one protein to another via the reaction X-Ub + Y --> Y-Ub + X, where both X-Ub and Y-Ub are covalent linkages.
1 Q16763 (/IDA)
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 Q16763 (/IPI)
Anaphase-promoting complex binding GO:0010997
Interacting selectively and non-covalently with an anaphase-promoting complex. A ubiquitin ligase complex that degrades mitotic cyclins and anaphase inhibitory protein, thereby triggering sister chromatid separation and exit from mitosis.
1 Q16763 (/IPI)
Ubiquitin conjugating enzyme activity GO:0061631
Isoenergetic transfer of ubiquitin from one protein to another via the reaction X-ubiquitin + Y -> Y-ubiquitin + X, where both the X-ubiquitin and Y-ubiquitin linkages are thioester bonds between the C-terminal glycine of ubiquitin and a sulfhydryl side group of a cysteine residue.
1 Q16763 (/IDA)

There are 32 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
Exit from mitosis GO:0010458
The cell cycle transition where a cell leaves M phase and enters a new G1 phase. M phase is the part of the mitotic cell cycle during which mitosis and cytokinesis take place.
30 A1L3K1 (/ISS) A1L3K1 (/ISS) A7SE05 (/ISS) B3MQV3 (/ISS) B3NWW9 (/ISS) B4H9W2 (/ISS) B4H9W2 (/ISS) B4IF39 (/ISS) B4IF39 (/ISS) B4JKB7 (/ISS)
(20 more)
Anaphase-promoting complex-dependent catabolic process GO:0031145
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, with ubiquitin-protein ligation catalyzed by the anaphase-promoting complex, and mediated by the proteasome.
30 A1L3K1 (/ISS) A1L3K1 (/ISS) A7SE05 (/ISS) B3MQV3 (/ISS) B3NWW9 (/ISS) B4H9W2 (/ISS) B4H9W2 (/ISS) B4IF39 (/ISS) B4IF39 (/ISS) B4JKB7 (/ISS)
(20 more)
Free ubiquitin chain polymerization GO:0010994
The process of creating free ubiquitin chains, compounds composed of a large number of ubiquitin monomers. These chains are not conjugated to a protein.
15 A1L3K1 (/ISS) A1L3K1 (/ISS) A7SE05 (/ISS) B5DFI8 (/ISS) C1C3R6 (/ISS) C3Z724 (/ISS) Q1RML1 (/ISS) Q28F89 (/ISS) Q4V908 (/ISS) Q76EZ2 (/ISS)
(5 more)
Protein K11-linked ubiquitination GO:0070979
A protein ubiquitination process in which ubiquitin monomers are attached to a protein, and then ubiquitin polymers are formed by linkages between lysine residues at position 11 of the ubiquitin monomers. K11-linked polyubiquitination targets the substrate protein for degradation. The anaphase-promoting complex promotes the degradation of mitotic regulators by assembling K11-linked polyubiquitin chains.
15 A1L3K1 (/ISS) A1L3K1 (/ISS) A7SE05 (/ISS) B5DFI8 (/ISS) C1C3R6 (/ISS) C3Z724 (/ISS) Q1RML1 (/ISS) Q28F89 (/ISS) Q4V908 (/ISS) Q76EZ2 (/ISS)
(5 more)
Positive regulation of ubiquitin protein ligase activity GO:1904668
Any process that activates or increases the frequency, rate or extent of ubiquitin protein ligase activity.
15 A1L3K1 (/ISS) A1L3K1 (/ISS) A7SE05 (/ISS) B5DFI8 (/ISS) C1C3R6 (/ISS) C3Z724 (/ISS) Q1RML1 (/ISS) Q28F89 (/ISS) Q4V908 (/ISS) Q76EZ2 (/ISS)
(5 more)
Protein K29-linked ubiquitination GO:0035519
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 29 of the ubiquitin monomers, is added to a protein. K29-linked ubiquitination targets the substrate protein for degradation.
4 B5DFI8 (/ISS) Q1RML1 (/ISS) Q921J4 (/ISS) Q921J4 (/ISS)
Protein K27-linked ubiquitination GO:0044314
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 27 of the ubiquitin monomers, is added to a protein.
4 B5DFI8 (/ISS) Q1RML1 (/ISS) Q921J4 (/ISS) Q921J4 (/ISS)
Protein K63-linked ubiquitination GO:0070534
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is added to a protein. K63-linked ubiquitination does not target the substrate protein for degradation, but is involved in several pathways, notably as a signal to promote error-free DNA postreplication repair.
4 B5DFI8 (/ISS) Q1RML1 (/ISS) Q921J4 (/ISS) Q921J4 (/ISS)
Protein K6-linked ubiquitination GO:0085020
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 6 of the ubiquitin monomers, is added to a protein. K6-linked ubiquitination is involved in DNA repair.
4 B5DFI8 (/ISS) Q1RML1 (/ISS) Q921J4 (/ISS) Q921J4 (/ISS)
Exit from mitosis GO:0010458
The cell cycle transition where a cell leaves M phase and enters a new G1 phase. M phase is the part of the mitotic cell cycle during which mitosis and cytokinesis take place.
3 Q16763 (/IMP) Q9VX25 (/IMP) Q9VX25 (/IMP)
Exit from mitosis GO:0010458
The cell cycle transition where a cell leaves M phase and enters a new G1 phase. M phase is the part of the mitotic cell cycle during which mitosis and cytokinesis take place.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Free ubiquitin chain polymerization GO:0010994
The process of creating free ubiquitin chains, compounds composed of a large number of ubiquitin monomers. These chains are not conjugated to a protein.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Protein ubiquitination GO:0016567
The process in which one or more ubiquitin groups are added to a protein.
2 Q9VX25 (/ISS) Q9VX25 (/ISS)
Anaphase-promoting complex-dependent catabolic process GO:0031145
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, with ubiquitin-protein ligation catalyzed by the anaphase-promoting complex, and mediated by the proteasome.
2 Q9VX25 (/IMP) Q9VX25 (/IMP)
Anaphase-promoting complex-dependent catabolic process GO:0031145
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, with ubiquitin-protein ligation catalyzed by the anaphase-promoting complex, and mediated by the proteasome.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Protein K29-linked ubiquitination GO:0035519
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 29 of the ubiquitin monomers, is added to a protein. K29-linked ubiquitination targets the substrate protein for degradation.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Protein K27-linked ubiquitination GO:0044314
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 27 of the ubiquitin monomers, is added to a protein.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Protein K63-linked ubiquitination GO:0070534
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is added to a protein. K63-linked ubiquitination does not target the substrate protein for degradation, but is involved in several pathways, notably as a signal to promote error-free DNA postreplication repair.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Protein K11-linked ubiquitination GO:0070979
A protein ubiquitination process in which ubiquitin monomers are attached to a protein, and then ubiquitin polymers are formed by linkages between lysine residues at position 11 of the ubiquitin monomers. K11-linked polyubiquitination targets the substrate protein for degradation. The anaphase-promoting complex promotes the degradation of mitotic regulators by assembling K11-linked polyubiquitin chains.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Protein K6-linked ubiquitination GO:0085020
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 6 of the ubiquitin monomers, is added to a protein. K6-linked ubiquitination is involved in DNA repair.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Positive regulation of ubiquitin protein ligase activity GO:1904668
Any process that activates or increases the frequency, rate or extent of ubiquitin protein ligase activity.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Cellular protein modification process GO:0006464
The covalent alteration of one or more amino acids occurring in proteins, peptides and nascent polypeptides (co-translational, post-translational modifications) occurring at the level of an individual cell. Includes the modification of charged tRNAs that are destined to occur in a protein (pre-translation modification).
1 Q16763 (/TAS)
Exit from mitosis GO:0010458
The cell cycle transition where a cell leaves M phase and enters a new G1 phase. M phase is the part of the mitotic cell cycle during which mitosis and cytokinesis take place.
1 Q16763 (/IDA)
Free ubiquitin chain polymerization GO:0010994
The process of creating free ubiquitin chains, compounds composed of a large number of ubiquitin monomers. These chains are not conjugated to a protein.
1 Q16763 (/IDA)
Protein ubiquitination GO:0016567
The process in which one or more ubiquitin groups are added to a protein.
1 Q16763 (/TAS)
Anaphase-promoting complex-dependent catabolic process GO:0031145
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, with ubiquitin-protein ligation catalyzed by the anaphase-promoting complex, and mediated by the proteasome.
1 Q16763 (/IDA)
Protein K29-linked ubiquitination GO:0035519
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 29 of the ubiquitin monomers, is added to a protein. K29-linked ubiquitination targets the substrate protein for degradation.
1 Q16763 (/IDA)
Protein K27-linked ubiquitination GO:0044314
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 27 of the ubiquitin monomers, is added to a protein.
1 Q16763 (/IDA)
Protein K63-linked ubiquitination GO:0070534
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 63 of the ubiquitin monomers, is added to a protein. K63-linked ubiquitination does not target the substrate protein for degradation, but is involved in several pathways, notably as a signal to promote error-free DNA postreplication repair.
1 Q16763 (/IDA)
Protein K11-linked ubiquitination GO:0070979
A protein ubiquitination process in which ubiquitin monomers are attached to a protein, and then ubiquitin polymers are formed by linkages between lysine residues at position 11 of the ubiquitin monomers. K11-linked polyubiquitination targets the substrate protein for degradation. The anaphase-promoting complex promotes the degradation of mitotic regulators by assembling K11-linked polyubiquitin chains.
1 Q16763 (/IDA)
Protein K6-linked ubiquitination GO:0085020
A protein ubiquitination process in which a polymer of ubiquitin, formed by linkages between lysine residues at position 6 of the ubiquitin monomers, is added to a protein. K6-linked ubiquitination is involved in DNA repair.
1 Q16763 (/IDA)
Positive regulation of ubiquitin protein ligase activity GO:1904668
Any process that activates or increases the frequency, rate or extent of ubiquitin protein ligase activity.
1 Q16763 (/IDA)

There are 5 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
Anaphase-promoting complex GO:0005680
A ubiquitin ligase complex that degrades mitotic cyclins and anaphase inhibitory protein, thereby triggering sister chromatid separation and exit from mitosis. Substrate recognition by APC occurs through degradation signals, the most common of which is termed the Dbox degradation motif, originally discovered in cyclin B.
15 A1L3K1 (/ISS) A1L3K1 (/ISS) A7SE05 (/ISS) B5DFI8 (/ISS) C1C3R6 (/ISS) C3Z724 (/ISS) Q1RML1 (/ISS) Q28F89 (/ISS) Q4V908 (/ISS) Q76EZ2 (/ISS)
(5 more)
Anaphase-promoting complex GO:0005680
A ubiquitin ligase complex that degrades mitotic cyclins and anaphase inhibitory protein, thereby triggering sister chromatid separation and exit from mitosis. Substrate recognition by APC occurs through degradation signals, the most common of which is termed the Dbox degradation motif, originally discovered in cyclin B.
2 Q921J4 (/ISO) Q921J4 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 Q16763 (/TAS)
Anaphase-promoting complex GO:0005680
A ubiquitin ligase complex that degrades mitotic cyclins and anaphase inhibitory protein, thereby triggering sister chromatid separation and exit from mitosis. Substrate recognition by APC occurs through degradation signals, the most common of which is termed the Dbox degradation motif, originally discovered in cyclin B.
1 Q16763 (/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 Q16763 (/TAS)