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:

"
Bacterial Topoisomerase I, domain 1
".

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: DNA topoisomerase

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 7 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
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
2 O70157 (/ISO) O70157 (/ISO)
DNA topoisomerase type I activity GO:0003917
Catalysis of a DNA topological transformation by transiently cleaving one DNA strand at a time to allow passage of another strand; changes the linking number by +1 per catalytic cycle.
2 O70157 (/ISO) O70157 (/ISO)
DNA topoisomerase type I activity GO:0003917
Catalysis of a DNA topological transformation by transiently cleaving one DNA strand at a time to allow passage of another strand; changes the linking number by +1 per catalytic cycle.
2 O70157 (/ISS) O70157 (/ISS)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 Q13472 (/TAS)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
1 Q13472 (/IDA)
DNA topoisomerase type I activity GO:0003917
Catalysis of a DNA topological transformation by transiently cleaving one DNA strand at a time to allow passage of another strand; changes the linking number by +1 per catalytic cycle.
1 Q13472 (/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 Q13472 (/IPI)

There are 11 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
DNA topological change GO:0006265
The process in which a transformation is induced in the topological structure of a double-stranded DNA helix, resulting in a change in linking number.
2 O70157 (/ISO) O70157 (/ISO)
DNA topological change GO:0006265
The process in which a transformation is induced in the topological structure of a double-stranded DNA helix, resulting in a change in linking number.
2 O70157 (/ISS) O70157 (/ISS)
Mitochondrial DNA metabolic process GO:0032042
The chemical reactions and pathways involving mitochondrial DNA.
2 O70157 (/ISO) O70157 (/ISO)
Chromosome separation GO:0051304
The cell cycle process in which paired chromosomes are detached from each other. Chromosome separation begins with the release of cohesin complexes from chromosomes; in budding yeast, this includes the cleavage of cohesin complexes along the chromosome arms, followed by the separation of the centromeric regions. Chromosome separation also includes formation of chromatid axes mediated by condensins, and ends with the disentangling of inter-sister catenation catalyzed by topoisomerase II (topo II).
2 O70157 (/ISO) O70157 (/ISO)
Chromosome separation GO:0051304
The cell cycle process in which paired chromosomes are detached from each other. Chromosome separation begins with the release of cohesin complexes from chromosomes; in budding yeast, this includes the cleavage of cohesin complexes along the chromosome arms, followed by the separation of the centromeric regions. Chromosome separation also includes formation of chromatid axes mediated by condensins, and ends with the disentangling of inter-sister catenation catalyzed by topoisomerase II (topo II).
2 O70157 (/ISS) O70157 (/ISS)
DNA replication GO:0006260
The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by initiation proteins, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA.
1 Q13472 (/TAS)
DNA topological change GO:0006265
The process in which a transformation is induced in the topological structure of a double-stranded DNA helix, resulting in a change in linking number.
1 Q13472 (/IDA)
Mitochondrial DNA metabolic process GO:0032042
The chemical reactions and pathways involving mitochondrial DNA.
1 Q13472 (/IMP)
Chromosome separation GO:0051304
The cell cycle process in which paired chromosomes are detached from each other. Chromosome separation begins with the release of cohesin complexes from chromosomes; in budding yeast, this includes the cleavage of cohesin complexes along the chromosome arms, followed by the separation of the centromeric regions. Chromosome separation also includes formation of chromatid axes mediated by condensins, and ends with the disentangling of inter-sister catenation catalyzed by topoisomerase II (topo II).
1 Q13472 (/IMP)
Meiotic cell cycle GO:0051321
Progression through the phases of the meiotic cell cycle, in which canonically a cell replicates to produce four offspring with half the chromosomal content of the progenitor cell via two nuclear divisions.
1 Q13472 (/TAS)
Regulation of signal transduction by p53 class mediator GO:1901796
Any process that modulates the frequency, rate or extent of signal transduction by p53 class mediator.
1 Q13472 (/TAS)

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
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
3 O70157 (/TAS) O70157 (/TAS) Q13472 (/TAS)
PML body GO:0016605
A class of nuclear body; they react against SP100 auto-antibodies (PML, promyelocytic leukemia); cells typically contain 10-30 PML bodies per nucleus; alterations in the localization of PML bodies occurs after viral infection.
2 O70157 (/ISO) O70157 (/ISO)
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 Q13472 (/TAS)
PML body GO:0016605
A class of nuclear body; they react against SP100 auto-antibodies (PML, promyelocytic leukemia); cells typically contain 10-30 PML bodies per nucleus; alterations in the localization of PML bodies occurs after viral infection.
1 Q13472 (/IDA)
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