The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain
".

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 266457: RNA polymerase sigma factor

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 6 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).
4 P0AGB6 (/IPI) P9WGG7 (/IPI) P9WGH7 (/IPI) P9WGH9 (/IPI)
Sigma factor activity GO:0016987
A sigma factor is the promoter specificity subunit of eubacterial-type multisubunit RNA polymerases, those whose core subunit composition is often described as alpha(2)-beta-beta-prime. (This type of multisubunit RNA polymerase complex is known to be found in eubacteria and plant plastids). Although sigma does not bind DNA on its own, when combined with the core to form the holoenzyme, this binds specifically to promoter sequences, with the sigma factor making sequence specific contacts with the promoter elements. The sigma subunit is released from the elongating form of the polymerase and is thus free to act catalytically for multiple RNA polymerase core enzymes.
3 P9WGG7 (/IDA) Q06198 (/IDA) Q7AKG9 (/IDA)
Transcription regulatory region sequence-specific DNA binding GO:0000976
Interacting selectively and non-covalently with a specific sequence of DNA that is part of a regulatory region that controls transcription of that section of the DNA. The transcribed region might be described as a gene, cistron, or operon.
1 Q06198 (/EXP)
Bacterial-type RNA polymerase transcriptional activator activity, sequence-specific DNA binding GO:0001216
Interacting selectively and non-covalently with a specific DNA sequence in order to activate or increase the frequency, rate or extent of transcription by bacterial-type RNA polymerase. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
1 Q06198 (/EXP)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 P9WGG7 (/IDA)
Sigma factor activity GO:0016987
A sigma factor is the promoter specificity subunit of eubacterial-type multisubunit RNA polymerases, those whose core subunit composition is often described as alpha(2)-beta-beta-prime. (This type of multisubunit RNA polymerase complex is known to be found in eubacteria and plant plastids). Although sigma does not bind DNA on its own, when combined with the core to form the holoenzyme, this binds specifically to promoter sequences, with the sigma factor making sequence specific contacts with the promoter elements. The sigma subunit is released from the elongating form of the polymerase and is thus free to act catalytically for multiple RNA polymerase core enzymes.
1 Q9KPA6 (/ISS)

There are 31 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
Pathogenesis GO:0009405
The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
3 D0ZSY9 (/IMP) P9WGG7 (/IMP) Q06198 (/IMP)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
2 P0AGB6 (/IDA) P9WGH9 (/IDA)
Response to heat GO:0009408
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a heat stimulus, a temperature stimulus above the optimal temperature for that organism.
2 P9WGG7 (/IEP) P9WGH9 (/IEP)
DNA-templated transcription, initiation GO:0006352
Any process involved in the assembly of the RNA polymerase preinitiation complex (PIC) at the core promoter region of a DNA template, resulting in the subsequent synthesis of RNA from that promoter. The initiation phase includes PIC assembly and the formation of the first few bonds in the RNA chain, including abortive initiation, which occurs when the first few nucleotides are repeatedly synthesized and then released. The initiation phase ends just before and does not include promoter clearance, or release, which is the transition between the initiation and elongation phases of transcription.
1 Q9KPA6 (/ISS)
Response to stress GO:0006950
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a disturbance in organismal or cellular homeostasis, usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
1 P9WGH9 (/IEP)
Response to osmotic stress GO:0006970
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating an increase or decrease in the concentration of solutes outside the organism or cell.
1 P0AGB6 (/IDA)
Response to oxidative stress GO:0006979
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
1 Q7AKG9 (/IDA)
Response to oxidative stress GO:0006979
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.
1 P9WGH9 (/IMP)
Response to temperature stimulus GO:0009266
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a temperature stimulus.
1 P0AGB6 (/IDA)
Response to temperature stimulus GO:0009266
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a temperature stimulus.
1 D0ZSY9 (/IEP)
Response to heat GO:0009408
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a heat stimulus, a temperature stimulus above the optimal temperature for that organism.
1 P9WGH9 (/IMP)
Response to xenobiotic stimulus GO:0009410
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a xenobiotic compound stimulus. Xenobiotic compounds are compounds foreign to living organisms.
1 P9WGG7 (/IEP)
Regulation of gene expression GO:0010468
Any process that modulates the frequency, rate or extent of gene expression. Gene expression is the process in which a gene's coding sequence is converted into a mature gene product or products (proteins or RNA). This includes the production of an RNA transcript as well as any processing to produce a mature RNA product or an mRNA (for protein-coding genes) and the translation of that mRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
1 P9WGH7 (/IDA)
Regulation of fatty acid metabolic process GO:0019217
Any process that modulates the frequency, rate or extent of the chemical reactions and pathways involving fatty acids.
1 P9WGH7 (/IDA)
Regulation of polysaccharide biosynthetic process GO:0032885
Any process that modulates the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of polysaccharides.
1 Q06198 (/IMP)
Cellular response to heat GO:0034605
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 heat stimulus, a temperature stimulus above the optimal temperature for that organism.
1 P9WGH9 (/IMP)
Cellular response to cell envelope stress GO:0036460
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 stress acting at the cell envelope.
1 Q06198 (/IDA)
Response to hydrogen peroxide GO:0042542
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a hydrogen peroxide (H2O2) stimulus.
1 P9WGG7 (/IEP)
Growth of symbiont in host cell GO:0044119
The increase in size or mass of symbiont, occurring in its host's cell. The host is defined as the larger of the organisms involved in a symbiotic interaction.
1 P9WGG7 (/IMP)
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 Q9KPA6 (/EXP)
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 Q06198 (/IEP)
Response to nitrosative stress GO:0051409
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a nitrosative stress stimulus. Nitrosative stress is a state often resulting from exposure to high levels of nitric oxide (NO) or the highly reactive oxidant peroxynitrite, which is produced following interaction of NO with superoxide anions.
1 P9WGH9 (/IMP)
Response to host immune response GO:0052572
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of detecting the immune response of the host organism. The host is defined as the larger of the organisms involved in a symbiotic interaction.
1 P9WGG7 (/IEP)
Cellular response to antibiotic GO:0071236
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 antibiotic stimulus. An antibiotic is a chemical substance produced by a microorganism which has the capacity to inhibit the growth of or to kill other microorganisms.
1 Q06198 (/IMP)
Regulation of chaperone-mediated protein complex assembly GO:0090034
Any process that modulates the frequency, rate, or extent of chaperone-mediated protein complex assembly. Chaperone-mediated protein complex assembly is the aggregation, arrangement and bonding together of a set of components to form a protein complex, mediated by chaperone molecules that do not form part of the finished complex.
1 P9WGG7 (/IDA)
Cellular stress response to acid chemical GO:0097533
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 disturbance in cellular homeostasis caused by the chemical structure of the anion portion of a dissociated acid (rather than the acid acting as a proton donor). The acid chemical may be in gaseous, liquid or solid form.
1 D0ZSY9 (/IMP)
Positive regulation of cellular response to heat GO:1900036
Any process that activates or increases the frequency, rate or extent of cellular response to heat.
1 Q06198 (/IDA)
Positive regulation of cell adhesion involved in single-species biofilm formation GO:1900189
Any process that activates or increases the frequency, rate or extent of cell adhesion involved in single-species biofilm formation.
1 Q06198 (/IMP)
Positive regulation of single-species biofilm formation on inanimate substrate GO:1900233
Any process that activates or increases the frequency, rate or extent of single-species biofilm formation on inanimate substrate.
1 Q06198 (/IMP)
Negative regulation of bacterial-type flagellum-dependent cell motility GO:1902201
Any process that stops, prevents or reduces the frequency, rate or extent of bacterial-type flagellum-dependent cell motility.
1 Q06198 (/IMP)
Positive regulation of response to oxidative stress GO:1902884
Any process that activates or increases the frequency, rate or extent of response to oxidative stress.
1 Q06198 (/IMP)

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
Cell wall GO:0005618
The rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, most prokaryotic cells and some protozoan parasites, maintaining their shape and protecting them from osmotic lysis. In plants it is made of cellulose and, often, lignin; in fungi it is composed largely of polysaccharides; in bacteria it is composed of peptidoglycan; in protozoan parasites such as Giardia species, it's made of carbohydrates and proteins.
2 P9WGH7 (/IDA) P9WGH9 (/IDA)
Cytosolic DNA-directed RNA polymerase complex GO:0000345
The eubacterial DNA-directed RNA polymerase is a multisubunit complex with a core composed of the essential subunits beta-prime, beta, and two copies of alpha and a fifth nonessential subunit called omega. An additional subunit, a sigma factor, is required for promoter recognition and specificity.
1 Q06198 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 P0AGB6 (/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 P9WGH7 (/IDA)
Protein-DNA complex GO:0032993
A macromolecular complex containing both protein and DNA molecules.
1 Q06198 (/EXP)