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:

"
P-loop containing nucleotide triphosphate hydrolases
".

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 138: DNA helicase

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
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).
15 P29469 (/IPI) P29469 (/IPI) P29469 (/IPI) P29469 (/IPI) P29469 (/IPI) P29469 (/IPI) P40377 (/IPI) P49735 (/IPI) P49736 (/IPI) P49736 (/IPI)
(5 more)
Chromatin binding GO:0003682
Interacting selectively and non-covalently with chromatin, the network of fibers of DNA, protein, and sometimes RNA, that make up the chromosomes of the eukaryotic nucleus during interphase.
9 A0A0R4IF65 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) Q7ZUR0 (/IDA) Q8JGR5 (/IDA)
DNA replication origin binding GO:0003688
Interacting selectively and non-covalently with the DNA replication origin, a unique DNA sequence of a replicon at which DNA replication is initiated and proceeds bidirectionally or unidirectionally.
7 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P97310 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
4 P49736 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS)
DNA replication origin binding GO:0003688
Interacting selectively and non-covalently with the DNA replication origin, a unique DNA sequence of a replicon at which DNA replication is initiated and proceeds bidirectionally or unidirectionally.
1 P40377 (/ISO)
Enzyme binding GO:0019899
Interacting selectively and non-covalently with any enzyme.
1 P97310 (/IPI)
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 P97310 (/IDA)

There are 34 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
Double-strand break repair via break-induced replication GO:0000727
The error-free repair of a double-strand break in DNA in which the centromere-proximal end of a broken chromosome searches for a homologous region in an intact chromosome. DNA synthesis initiates from the 3' end of the invading DNA strand, using the intact chromosome as the template, and progresses to the end of the chromosome.
6 P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP)
Pre-replicative complex assembly involved in nuclear cell cycle DNA replication GO:0006267
The aggregation, arrangement and bonding together of a set of components to form the nuclear pre-replicative complex, a protein-DNA complex that forms at the eukaryotic DNA replication origin and is required for replication initiation.
6 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA)
DNA strand elongation involved in DNA replication GO:0006271
The process in which an existing DNA strand is extended by activities including the addition of nucleotides to the 3' end of the strand, complementary to an existing template, as part of DNA replication.
6 P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP)
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.
6 P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP)
Mitotic DNA replication initiation GO:1902975
Any DNA replication initiation involved in mitotic cell cycle DNA replication.
6 P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP) P29469 (/IMP)
Negative regulation of DNA helicase activity GO:1905775
Any process that stops, prevents or reduces the frequency, rate or extent of ATP-dependent DNA helicase activity.
6 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA)
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.
5 P49735 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS)
G1/S transition of mitotic cell cycle GO:0000082
The mitotic cell cycle transition by which a cell in G1 commits to S phase. The process begins with the build up of G1 cyclin-dependent kinase (G1 CDK), resulting in the activation of transcription of G1 cyclins. The process ends with the positive feedback of the G1 cyclins on the G1 CDK which commits the cell to S phase, in which DNA replication is initiated.
4 P49736 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS)
DNA unwinding involved in DNA replication GO:0006268
The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating unpaired template strands for DNA replication.
4 P55861 (/IDA) P55861 (/IDA) P97310 (/IDA) Q2R482 (/IDA)
DNA replication initiation GO:0006270
The process in which DNA-dependent DNA replication is started; this begins with the ATP dependent loading of an initiator complex onto the DNA, this is followed by DNA melting and helicase activity. In bacteria, the gene products that enable the helicase activity are loaded after the initial melting and in archaea and eukaryotes, the gene products that enable the helicase activity are inactive when they are loaded and subsequently activate.
4 P49736 (/IMP) P49736 (/IMP) P49736 (/IMP) P49736 (/IMP)
Apoptotic process GO:0006915
A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
4 P49736 (/IMP) P49736 (/IMP) P49736 (/IMP) P49736 (/IMP)
Cochlea development GO:0090102
The progression of the cochlea over time from its formation to the mature structure. The cochlea is the snail-shaped portion of the inner ear that is responsible for the detection of sound.
4 P49736 (/IMP) P49736 (/IMP) P49736 (/IMP) P49736 (/IMP)
Thymus development GO:0048538
The process whose specific outcome is the progression of the thymus over time, from its formation to the mature structure. The thymus is a symmetric bi-lobed organ involved primarily in the differentiation of immature to mature T cells, with unique vascular, nervous, epithelial, and lymphoid cell components.
3 A0A0R4IF65 (/IMP) Q7ZUR0 (/IMP) Q8JGR5 (/IMP)
Retina development in camera-type eye GO:0060041
The process whose specific outcome is the progression of the retina over time, from its formation to the mature structure. The retina is the innermost layer or coating at the back of the eyeball, which is sensitive to light and in which the optic nerve terminates.
3 A0A0R4IF65 (/IMP) Q7ZUR0 (/IMP) Q8JGR5 (/IMP)
Regulation of DNA-dependent DNA replication initiation GO:0030174
Any process that modulates the frequency, rate or extent of initiation of DNA-dependent DNA replication; the process in which DNA becomes competent to replicate. In eukaryotes, replication competence is established in early G1 and lost during the ensuing S phase.
2 P55861 (/IDA) P55861 (/IDA)
DNA unwinding involved in DNA replication GO:0006268
The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating unpaired template strands for DNA replication.
1 Q6DIH3 (/ISS)
DNA unwinding involved in DNA replication GO:0006268
The process in which interchain hydrogen bonds between two strands of DNA are broken or 'melted', generating unpaired template strands for DNA replication.
1 Q9LPD9 (/TAS)
DNA replication initiation GO:0006270
The process in which DNA-dependent DNA replication is started; this begins with the ATP dependent loading of an initiator complex onto the DNA, this is followed by DNA melting and helicase activity. In bacteria, the gene products that enable the helicase activity are loaded after the initial melting and in archaea and eukaryotes, the gene products that enable the helicase activity are inactive when they are loaded and subsequently activate.
1 P97310 (/ISO)
DNA replication initiation GO:0006270
The process in which DNA-dependent DNA replication is started; this begins with the ATP dependent loading of an initiator complex onto the DNA, this is followed by DNA melting and helicase activity. In bacteria, the gene products that enable the helicase activity are loaded after the initial melting and in archaea and eukaryotes, the gene products that enable the helicase activity are inactive when they are loaded and subsequently activate.
1 P97310 (/TAS)
Premeiotic DNA replication GO:0006279
The replication of DNA that precedes meiotic cell division.
1 P40377 (/IC)
Nucleosome assembly GO:0006334
The aggregation, arrangement and bonding together of a nucleosome, the beadlike structural units of eukaryotic chromatin composed of histones and DNA.
1 P97310 (/IDA)
Apoptotic process GO:0006915
A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
1 P97310 (/ISO)
Apoptotic process GO:0006915
A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
1 P97310 (/ISS)
Embryo development ending in seed dormancy GO:0009793
The process whose specific outcome is the progression of the embryo over time, from zygote formation to the end of seed dormancy. An example of this process is found in Arabidopsis thaliana.
1 Q9LPD9 (/IMP)
Regulation of root meristem growth GO:0010082
Any process involved in maintaining the size and shape of a root meristem.
1 Q9LPD9 (/IMP)
Regulation of DNA-dependent DNA replication initiation GO:0030174
Any process that modulates the frequency, rate or extent of initiation of DNA-dependent DNA replication; the process in which DNA becomes competent to replicate. In eukaryotes, replication competence is established in early G1 and lost during the ensuing S phase.
1 Q6DIH3 (/ISS)
Chromosome condensation GO:0030261
The progressive compaction of dispersed interphase chromatin into threadlike chromosomes prior to mitotic or meiotic nuclear division, or during apoptosis, in eukaryotic cells.
1 P49735 (/IMP)
Regulation of cell population proliferation GO:0042127
Any process that modulates the frequency, rate or extent of cell proliferation.
1 Q9LPD9 (/IMP)
Root development GO:0048364
The process whose specific outcome is the progression of the root over time, from its formation to the mature structure. The root is the water- and mineral-absorbing part of a plant which is usually underground, does not bear leaves, tends to grow downwards and is typically derived from the radicle of the embryo.
1 Q9LPD9 (/IMP)
Negative regulation of helicase activity GO:0051097
Any process that stops or reduces the activity of a helicase.
1 P40377 (/IDA)
Cellular response to interleukin-4 GO:0071353
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 an interleukin-4 stimulus.
1 P97310 (/IDA)
Cochlea development GO:0090102
The progression of the cochlea over time from its formation to the mature structure. The cochlea is the snail-shaped portion of the inner ear that is responsible for the detection of sound.
1 P97310 (/ISO)
Cochlea development GO:0090102
The progression of the cochlea over time from its formation to the mature structure. The cochlea is the snail-shaped portion of the inner ear that is responsible for the detection of sound.
1 P97310 (/ISS)
Mitotic DNA replication initiation GO:1902975
Any DNA replication initiation involved in mitotic cell cycle DNA replication.
1 P40377 (/IC)

There are 36 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.
14 D3ZP96 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P40377 (/IDA) P49736 (/IDA) P49736 (/IDA)
(4 more)
MCM complex GO:0042555
A hexameric protein complex required for the initiation and regulation of DNA replication.
13 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P40377 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA)
(3 more)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
10 P29469 (/TAS) P29469 (/TAS) P29469 (/TAS) P29469 (/TAS) P29469 (/TAS) P29469 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
10 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA)
Chromatin GO:0000785
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
6 P49736 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA) P55861 (/IDA) P55861 (/IDA)
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.
6 P29469 (/HDA) P29469 (/HDA) P29469 (/HDA) P29469 (/HDA) P29469 (/HDA) P29469 (/HDA)
Nuclear pre-replicative complex GO:0005656
A protein-DNA complex assembled at eukaryotic DNA replication origins during late mitosis and G1, allowing the origin to become competent, or 'licensed', for replication. The complex normally includes the origin recognition complex (ORC), Cdc6, Cdt1 and the MiniChromosome Maintenance (Mcm2-7) proteins.
6 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
6 P29469 (/HDA) P29469 (/HDA) P29469 (/HDA) P29469 (/HDA) P29469 (/HDA) P29469 (/HDA)
DNA replication preinitiation complex GO:0031261
A protein-DNA complex assembled at eukaryotic DNA replication origins immediately prior to the initiation of DNA replication. The preinitiation complex is formed by the assembly of additional proteins onto an existing prereplicative complex. In budding yeast, the additional proteins might include Cdc45p, Sld2p, Sld3p, Dpb11p, DNA polymerases, and others; in fission yeast the GINS complex is present.
6 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA)
Replication fork protection complex GO:0031298
A protein complex conserved in eukaryotes and associated with the replication fork; the complex stabilizes stalled replication forks and is thought to be involved in coordinating leading- and lagging-strand synthesis and in replication checkpoint signaling.
6 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA)
CMG complex GO:0071162
A protein complex that contains the GINS complex, Cdc45p, and the heterohexameric MCM complex, and that is involved in unwinding DNA during replication.
6 P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA) P29469 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
5 H0Y8E6 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA)
Microtubule cytoskeleton GO:0015630
The part of the cytoskeleton (the internal framework of a cell) composed of microtubules and associated proteins.
5 H0Y8E6 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA) P49736 (/IDA)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
4 P49736 (/HDA) P49736 (/HDA) P49736 (/HDA) P49736 (/HDA)
Chromatin GO:0000785
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
4 P49736 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS)
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.
4 P49736 (/TAS) P49736 (/TAS) P49736 (/TAS) P49736 (/TAS)
MCM complex GO:0042555
A hexameric protein complex required for the initiation and regulation of DNA replication.
4 P97310 (/ISS) Q54LI2 (/ISS) Q6DIH3 (/ISS) Q9XXI9 (/ISS)
MCM complex GO:0042555
A hexameric protein complex required for the initiation and regulation of DNA replication.
2 P55861 (/IPI) P55861 (/IPI)
THO complex GO:0000347
The THO complex is a nuclear complex that is required for transcription elongation through genes containing tandemly repeated DNA sequences. The THO complex is also part of the TREX (TRanscription EXport) complex that is involved in coupling transcription to export of mRNAs to the cytoplasm. In S. cerevisiae, it is composed of four subunits: Hpr1p, Tho2p, Thp1p, and Mft1p, while the human complex is composed of 7 subunits.
1 Q9LPD9 (/IDA)
Nuclear chromosome, telomeric region GO:0000784
The terminal region of a linear nuclear chromosome that includes the telomeric DNA repeats and associated proteins.
1 P40377 (/IDA)
Chromatin GO:0000785
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
1 P97310 (/ISO)
Chromatin GO:0000785
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome.
1 Q6DIH3 (/ISS)
Nuclear chromatin GO:0000790
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome in the nucleus.
1 P40377 (/IDA)
Condensed chromosome GO:0000793
A highly compacted molecule of DNA and associated proteins resulting in a cytologically distinct structure.
1 Q9XXI9 (/IDA)
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 P97310 (/ISO)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
1 P97310 (/ISO)
Nuclear pre-replicative complex GO:0005656
A protein-DNA complex assembled at eukaryotic DNA replication origins during late mitosis and G1, allowing the origin to become competent, or 'licensed', for replication. The complex normally includes the origin recognition complex (ORC), Cdc6, Cdt1 and the MiniChromosome Maintenance (Mcm2-7) proteins.
1 P40377 (/IC)
Nuclear origin of replication recognition complex GO:0005664
A multisubunit complex that is located at the replication origins of a chromosome in the nucleus.
1 P97310 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 P97310 (/ISO)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 P97310 (/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 Q9LPD9 (/IDA)
Microtubule cytoskeleton GO:0015630
The part of the cytoskeleton (the internal framework of a cell) composed of microtubules and associated proteins.
1 P97310 (/ISO)
DNA replication preinitiation complex GO:0031261
A protein-DNA complex assembled at eukaryotic DNA replication origins immediately prior to the initiation of DNA replication. The preinitiation complex is formed by the assembly of additional proteins onto an existing prereplicative complex. In budding yeast, the additional proteins might include Cdc45p, Sld2p, Sld3p, Dpb11p, DNA polymerases, and others; in fission yeast the GINS complex is present.
1 P40377 (/IC)
MCM complex GO:0042555
A hexameric protein complex required for the initiation and regulation of DNA replication.
1 P97310 (/ISO)
Nuclear replication fork GO:0043596
The Y-shaped region of a nuclear replicating DNA molecule, resulting from the separation of the DNA strands and in which the synthesis of new strands takes place. Also includes associated protein complexes.
1 P40377 (/IC)
Pronucleus GO:0045120
The nucleus of either the ovum or the spermatozoon following fertilization. Thus, in the fertilized ovum, there are two pronuclei, one originating from the ovum, the other from the spermatozoon that brought about fertilization; they approach each other, but do not fuse until just before the first cleavage, when each pronucleus loses its membrane to release its contents.
1 Q9XXI9 (/IDA)