The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was: waiting to be named.

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 1: Fact complex subunit ssrp1

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 16 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).
21 G0SHK5 (/IPI) O94529 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI)
(11 more)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
13 Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS)
(3 more)
Single-stranded DNA binding GO:0003697
Interacting selectively and non-covalently with single-stranded DNA.
13 Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS) Q8IL56 (/ISS)
(3 more)
DNA-binding transcription factor activity, RNA polymerase II-specific GO:0000981
A protein or a member of a complex that interacts selectively and non-covalently with a specific DNA sequence (sometimes referred to as a motif) within the regulatory region of a RNA polymerase II-transcribed gene to modulate transcription. Regulatory regions include promoters (proximal and distal) and enhancers. Genes are transcriptional units.
5 Q08945 (/ISA) Q08945 (/ISA) Q08945 (/ISA) Q08945 (/ISA) Q08945 (/ISA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
5 Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS)
RNA binding GO:0003723
Interacting selectively and non-covalently with an RNA molecule or a portion thereof.
5 Q08945 (/HDA) Q08945 (/HDA) Q08945 (/HDA) Q08945 (/HDA) Q08945 (/HDA)
DNA-binding transcription factor activity GO:0003700
A protein or a member of a complex that interacts selectively and non-covalently with a specific DNA sequence (sometimes referred to as a motif) within the regulatory region of a gene to modulate transcription. Regulatory regions include promoters (proximal and distal) and enhancers. Genes are transcriptional units, and include bacterial operons.
2 Q05153 (/ISS) Q05153 (/ISS)
Nucleosome binding GO:0031491
Interacting selectively and non-covalently with a nucleosome, a complex comprised of DNA wound around a multisubunit core and associated proteins, which forms the primary packing unit of DNA into higher order structures.
2 Q05344 (/IDA) Q05344 (/IDA)
Nucleosomal DNA binding GO:0031492
Interacting selectively and non-covalently with the DNA portion of a nucleosome.
2 Q05344 (/IDA) Q05344 (/IDA)
Protein self-association GO:0043621
Interacting selectively and non-covalently with a domain within the same polypeptide.
2 Q05344 (/IDA) Q05344 (/IDA)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
2 Q05344 (/IPI) Q05344 (/IPI)
Chromo shadow domain binding GO:0070087
Interacting selectively and non-covalently with a chromo shadow domain, a protein domain that is distantly related, and found in association with, the chromo domain.
2 Q05344 (/IMP) Q05344 (/IMP)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 O94529 (/ISM)
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.
1 Q08943 (/IDA)
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 Q54G78 (/IDA)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 Q54G78 (/IDA)

There are 29 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-dependent DNA replication GO:0006261
A DNA replication process that uses parental DNA as a template for the DNA-dependent DNA polymerases that synthesize the new strands.
9 Q04636 (/IGI) Q04636 (/IGI) Q04636 (/IGI) Q04636 (/IGI) Q04636 (/IGI) Q04636 (/IGI) Q04636 (/IGI) Q04636 (/IGI) Q04636 (/IGI)
DNA-dependent DNA replication GO:0006261
A DNA replication process that uses parental DNA as a template for the DNA-dependent DNA polymerases that synthesize the new strands.
9 Q04636 (/IMP) Q04636 (/IMP) Q04636 (/IMP) Q04636 (/IMP) Q04636 (/IMP) Q04636 (/IMP) Q04636 (/IMP) Q04636 (/IMP) Q04636 (/IMP)
DNA-dependent DNA replication GO:0006261
A DNA replication process that uses parental DNA as a template for the DNA-dependent DNA polymerases that synthesize the new strands.
9 Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI) Q04636 (/IPI)
DNA replication-independent nucleosome organization GO:0034724
The formation or destruction of chromatin structures, occurring outside the context of DNA replication.
9 Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA)
Positive regulation of RNA polymerase II transcriptional preinitiation complex assembly GO:0045899
Any process that activates or increases the frequency, rate or extent of RNA polymerase II transcriptional preinitiation complex assembly.
9 Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA)
Transcription by RNA polymerase II GO:0006366
The synthesis of RNA from a DNA template by RNA polymerase II (RNAP II), originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).
5 Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS)
Transcription elongation from RNA polymerase II promoter GO:0006368
The extension of an RNA molecule after transcription initiation and promoter clearance at an RNA polymerase II promoter by the addition of ribonucleotides catalyzed by RNA polymerase II.
5 Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/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.
5 Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS)
Regulation of cell cycle GO:0051726
Any process that modulates the rate or extent of progression through the cell cycle.
4 A0A2R8QK93 (/IMP) A0A2R8RPN8 (/IMP) F1QEB4 (/IMP) Q7SZP7 (/IMP)
Karyogamy GO:0000741
The creation of a single nucleus from multiple nuclei as a result of fusing the lipid bilayers that surround each nuclei.
2 Q05153 (/IMP) Q05153 (/IMP)
Regulation of chromatin assembly or disassembly GO:0001672
Any process that modulates the frequency, rate or extent of chromatin assembly or disassembly.
2 Q05344 (/IMP) Q05344 (/IMP)
Negative regulation of protein phosphorylation GO:0001933
Any process that stops, prevents or reduces the rate of addition of phosphate groups to amino acids within a protein.
2 Q05344 (/IMP) Q05344 (/IMP)
Polar nucleus fusion GO:0010197
The merging of the polar nuclei, the two nuclei contained within the same cell that are created from the mitotic division of the megaspore during angiosperm reproduction. Polar nuclear fusion takes place in the ovule, forming in the fusion nucleus and giving rise to the endosperm when fertilized.
2 Q05153 (/IMP) Q05153 (/IMP)
Vegetative to reproductive phase transition of meristem GO:0010228
The process involved in transforming a meristem that produces vegetative structures, such as leaves, into a meristem that produces reproductive structures, such as a flower or an inflorescence.
2 Q05153 (/IMP) Q05153 (/IMP)
Ovarian follicle cell development GO:0030707
The process that occurs during oogenesis involving the ovarian follicle cells, somatic cells which surround the germ cells of an ovary. An example of this is found in Drosophila melanogaster.
2 Q05344 (/IMP) Q05344 (/IMP)
Positive regulation of actin filament polymerization GO:0030838
Any process that activates or increases the frequency, rate or extent of actin polymerization.
2 Q05344 (/IMP) Q05344 (/IMP)
Regulation of embryonic development GO:0045995
Any process that modulates the frequency, rate or extent of embryonic development.
2 O01683 (/IGI) P41848 (/IGI)
Regulation of DNA binding GO:0051101
Any process that modulates the frequency, rate or extent of DNA binding. DNA binding is any process in which a gene product interacts selectively with DNA (deoxyribonucleic acid).
2 Q05344 (/IMP) Q05344 (/IMP)
Pharynx development GO:0060465
The biological process whose specific outcome is the progression of a pharynx from an initial condition to its mature state. The pharynx is the part of the digestive system immediately posterior to the mouth.
2 O01683 (/IGI) P41848 (/IGI)
Regulation of chromatin assembly or disassembly GO:0001672
Any process that modulates the frequency, rate or extent of chromatin assembly or disassembly.
1 Q54G78 (/ISS)
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 O94529 (/ISO)
Cellular response to starvation GO:0009267
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 deprivation of nourishment.
1 Q5ALL8 (/IMP)
Filamentous growth GO:0030447
The process in which a multicellular organism, a unicellular organism or a group of unicellular organisms grow in a threadlike, filamentous shape.
1 Q5ALL8 (/IMP)
Chromatin silencing at silent mating-type cassette GO:0030466
Repression of transcription at silent mating-type loci by alteration of the structure of chromatin.
1 O94529 (/IMP)
Chromatin silencing at centromere GO:0030702
Repression of transcription of centromeric DNA by altering the structure of chromatin.
1 O94529 (/IMP)
Cellular protein localization GO:0034613
Any process in which a protein is transported to, and/or maintained in, a specific location at the level of a cell. Localization at the cellular level encompasses movement within the cell, from within the cell to the cell surface, or from one location to another at the surface of a cell.
1 O94529 (/IMP)
Filamentous growth of a population of unicellular organisms in response to starvation GO:0036170
The process in which a group of unicellular organisms grow in a threadlike, filamentous shape in response to deprivation of nourishment.
1 Q5ALL8 (/IMP)
Filamentous growth of a population of unicellular organisms in response to biotic stimulus GO:0036180
The process in which a group of unicellular organisms grow in a threadlike, filamentous shape in response to a biotic (living) stimulus.
1 Q5ALL8 (/IMP)
Histone exchange GO:0043486
The replacement, within chromatin, of resident histones or histone subunits with alternative, sometimes variant, histones or subunits.
1 O94529 (/IC)

There are 14 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
FACT complex GO:0035101
An abundant nuclear complex, which was originally identified in mammalian systems as a factor required for transcription elongation on chromatin templates. The FACT complex has been shown to destablilize the interaction between the H2A/H2B dimer and the H3/H4 tetramer of the nucleosome, thus reorganizing the structure of the nucleosome. In this way, the FACT complex may play a role in DNA replication and other processes that traverse the chromatin, as well as in transcription elongation. FACT is composed of two proteins that are evolutionarily conserved in all eukaryotes and homologous to mammalian Spt16 and SSRP1. In metazoans, the SSRP1 homolog contains an HMG domain; however in fungi and protists, it does not. For example, in S. cerevisiae the Pob3 protein is homologous to SSRP1, but lacks the HMG chromatin binding domain. Instead, the yFACT complex of Spt16p and Pob3p, binds to nucleosomes where multiple copies of the HMG-domain containing protein Nhp6p have already bound, but Nhp6p does not form a stable complex with the Spt16p/Pob3p heterodimer.
14 O94529 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA)
(4 more)
Nuclear chromatin GO:0000790
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome in the nucleus.
9 Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/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.
9 Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/IDA) Q04636 (/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.
7 O01683 (/IDA) O94529 (/IDA) P41848 (/IDA) Q05153 (/IDA) Q05153 (/IDA) Q05344 (/IDA) Q05344 (/IDA)
Nucleoplasm GO:0005654
That part of the nuclear content other than the chromosomes or the nucleolus.
5 Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS) Q08945 (/TAS)
Nuclear euchromatin GO:0005719
The dispersed less dense form of chromatin in the interphase nucleus. It exists in at least two forms, a some being in the form of transcriptionally active chromatin which is the least condensed, while the rest is inactive euchromatin which is more condensed than active chromatin but less condensed than heterochromatin.
2 Q05153 (/IDA) Q05153 (/IDA)
Nucleolus GO:0005730
A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
2 Q05344 (/IDA) Q05344 (/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.
2 Q05344 (/IDA) Q05344 (/IDA)
FACT complex GO:0035101
An abundant nuclear complex, which was originally identified in mammalian systems as a factor required for transcription elongation on chromatin templates. The FACT complex has been shown to destablilize the interaction between the H2A/H2B dimer and the H3/H4 tetramer of the nucleosome, thus reorganizing the structure of the nucleosome. In this way, the FACT complex may play a role in DNA replication and other processes that traverse the chromatin, as well as in transcription elongation. FACT is composed of two proteins that are evolutionarily conserved in all eukaryotes and homologous to mammalian Spt16 and SSRP1. In metazoans, the SSRP1 homolog contains an HMG domain; however in fungi and protists, it does not. For example, in S. cerevisiae the Pob3 protein is homologous to SSRP1, but lacks the HMG chromatin binding domain. Instead, the yFACT complex of Spt16p and Pob3p, binds to nucleosomes where multiple copies of the HMG-domain containing protein Nhp6p have already bound, but Nhp6p does not form a stable complex with the Spt16p/Pob3p heterodimer.
2 Q05344 (/TAS) Q05344 (/TAS)
Nuclear chromatin GO:0000790
The ordered and organized complex of DNA, protein, and sometimes RNA, that forms the chromosome in the nucleus.
1 O94529 (/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 O94529 (/HDA)
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 O94529 (/HDA)
FACT complex GO:0035101
An abundant nuclear complex, which was originally identified in mammalian systems as a factor required for transcription elongation on chromatin templates. The FACT complex has been shown to destablilize the interaction between the H2A/H2B dimer and the H3/H4 tetramer of the nucleosome, thus reorganizing the structure of the nucleosome. In this way, the FACT complex may play a role in DNA replication and other processes that traverse the chromatin, as well as in transcription elongation. FACT is composed of two proteins that are evolutionarily conserved in all eukaryotes and homologous to mammalian Spt16 and SSRP1. In metazoans, the SSRP1 homolog contains an HMG domain; however in fungi and protists, it does not. For example, in S. cerevisiae the Pob3 protein is homologous to SSRP1, but lacks the HMG chromatin binding domain. Instead, the yFACT complex of Spt16p and Pob3p, binds to nucleosomes where multiple copies of the HMG-domain containing protein Nhp6p have already bound, but Nhp6p does not form a stable complex with the Spt16p/Pob3p heterodimer.
1 Q54G78 (/ISS)
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 O94529 (/ISS)
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