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: 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 151898: Two-component response regulator ARR9

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 11 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).
20 O80365 (/IPI) O80366 (/IPI) O82798 (/IPI) Q29PQ8 (/IPI) Q2HIV3 (/IPI) Q7G8V2 (/IPI) Q8L500 (/IPI) Q8L9Y3 (/IPI) Q940D0 (/IPI) Q948L2 (/IPI)
(10 more)
Phosphorelay response regulator activity GO:0000156
Responds to a phosphorelay sensor to initiate a change in cell state or activity. The activity of the response regulator is regulated by transfer of a phosphate from a histidine residue in the sensor, to an aspartate residue in the response regulator. Many but not all response regulators act as transcriptional regulators to elicit a response.
18 F4II22 (/ISS) O49397 (/ISS) O80365 (/ISS) O80366 (/ISS) O82798 (/ISS) P62598 (/ISS) Q7G8V2 (/ISS) Q8L9Y3 (/ISS) Q940D0 (/ISS) Q9FPR6 (/ISS)
(8 more)
Transcription factor activity, sequence-specific DNA binding GO:0003700
Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
9 O49397 (/ISS) P62598 (/ISS) Q8L9Y3 (/ISS) Q940D0 (/ISS) Q9FJ16 (/ISS) Q9FXD6 (/ISS) Q9LZJ8 (/ISS) Q9M9B9 (/ISS) Q9ZWJ9 (/ISS)
Transcription factor activity, sequence-specific DNA binding GO:0003700
Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
5 O49397 (/IDA) Q940D0 (/IDA) Q9FXD6 (/IDA) Q9LKL2 (/IDA) Q9ZWJ9 (/IDA)
Phosphorelay response regulator activity GO:0000156
Responds to a phosphorelay sensor to initiate a change in cell state or activity. The activity of the response regulator is regulated by transfer of a phosphate from a histidine residue in the sensor, to an aspartate residue in the response regulator. Many but not all response regulators act as transcriptional regulators to elicit a response.
4 Q94LW1 (/IDA) Q9AV93 (/IDA) Q9FRZ1 (/IDA) Q9ZWS9 (/IDA)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
2 Q8L500 (/IPI) Q93WK5 (/IPI)
Phosphorelay response regulator activity GO:0000156
Responds to a phosphorelay sensor to initiate a change in cell state or activity. The activity of the response regulator is regulated by transfer of a phosphate from a histidine residue in the sensor, to an aspartate residue in the response regulator. Many but not all response regulators act as transcriptional regulators to elicit a response.
1 Q9SB04 (/IMP)
DNA binding GO:0003677
Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
1 Q9LKL2 (/IDA)
Protein serine/threonine kinase activity GO:0004674
Catalysis of the reactions: ATP + protein serine = ADP + protein serine phosphate, and ATP + protein threonine = ADP + protein threonine phosphate.
1 O82798 (/IDA)
Identical protein binding GO:0042802
Interacting selectively and non-covalently with an identical protein or proteins.
1 Q8L9Y3 (/IPI)
Sequence-specific DNA binding GO:0043565
Interacting selectively and non-covalently with DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding.
1 Q5SML5 (/IDA)

There are 49 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
Cytokinin-activated signaling pathway GO:0009736
A series of molecular signals generated by the binding of a cytokinin to a receptor, and ending with regulation of a downstream cellular process, e.g. transcription.
18 F4II22 (/TAS) O49397 (/TAS) O80365 (/TAS) O80366 (/TAS) O82798 (/TAS) P62598 (/TAS) Q7G8V2 (/TAS) Q8L9Y3 (/TAS) Q940D0 (/TAS) Q9FPR6 (/TAS)
(8 more)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
16 F4II22 (/TAS) F4JXG7 (/TAS) O80365 (/TAS) O80366 (/TAS) O82798 (/TAS) Q7G8V2 (/TAS) Q8L500 (/TAS) Q93WK5 (/TAS) Q9FPR6 (/TAS) Q9LKL2 (/TAS)
(6 more)
Response to cytokinin GO:0009735
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 cytokinin stimulus.
15 O80366 (/IEP) O82798 (/IEP) Q7G8V2 (/IEP) Q948L2 (/IEP) Q94LW1 (/IEP) Q9AV93 (/IEP) Q9FRY8 (/IEP) Q9FRY9 (/IEP) Q9FRZ0 (/IEP) Q9FRZ1 (/IEP)
(5 more)
Circadian rhythm GO:0007623
Any biological process in an organism that recurs with a regularity of approximately 24 hours.
7 O80365 (/IMP) O80366 (/IMP) O82798 (/IMP) Q8L500 (/IMP) Q93WK5 (/IMP) Q9SB04 (/IMP) Q9ZWS9 (/IMP)
Response to cytokinin GO:0009735
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 cytokinin stimulus.
7 Q4GZK2 (/IC) Q4GZK3 (/IC) Q4GZK4 (/IC) Q4GZK7 (/IC) Q4GZK8 (/IC) Q4GZK9 (/IC) Q4GZL0 (/IC)
Cytokinin-activated signaling pathway GO:0009736
A series of molecular signals generated by the binding of a cytokinin to a receptor, and ending with regulation of a downstream cellular process, e.g. transcription.
6 O80365 (/IMP) O80366 (/IMP) O82798 (/IMP) Q9SB04 (/IMP) Q9ZWS6 (/IMP) Q9ZWS7 (/IMP)
Phosphorelay signal transduction system GO:0000160
A conserved series of molecular signals found in prokaryotes and eukaryotes; involves autophosphorylation of a histidine kinase and the transfer of the phosphate group to an aspartate that then acts as a phospho-donor to response regulator proteins.
5 Q5SML5 (/IDA) Q94LW1 (/IDA) Q9AV93 (/IDA) Q9FRZ1 (/IDA) Q9ZWS9 (/IDA)
Response to cytokinin GO:0009735
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 cytokinin stimulus.
5 O49397 (/IGI) P62598 (/IGI) Q940D0 (/IGI) Q9FXD6 (/IGI) Q9ZWJ9 (/IGI)
Regulation of root meristem growth GO:0010082
Any process involved in maintaining the size and shape of a root meristem.
5 O49397 (/IMP) P62598 (/IMP) Q940D0 (/IMP) Q9FXD6 (/IMP) Q9ZWJ9 (/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.
4 O49397 (/IMP) P62598 (/IMP) Q940D0 (/IMP) Q9ZWJ9 (/IMP)
Cellular response to cytokinin stimulus GO:0071368
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 cytokinin stimulus.
4 O49397 (/IMP) P62598 (/IMP) Q940D0 (/IMP) Q9ZWJ9 (/IMP)
Regulation of seed growth GO:0080113
Any process that modulates the frequency, rate or extent of growth of the seed of an plant.
4 O49397 (/IMP) P62598 (/IMP) Q940D0 (/IMP) Q9ZWJ9 (/IMP)
Response to water deprivation GO:0009414
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 water deprivation stimulus, prolonged deprivation of water.
3 O49397 (/IEP) P62598 (/IEP) Q940D0 (/IEP)
Response to water deprivation GO:0009414
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 water deprivation stimulus, prolonged deprivation of water.
3 O49397 (/IGI) P62598 (/IGI) Q940D0 (/IGI)
Cytokinin-activated signaling pathway GO:0009736
A series of molecular signals generated by the binding of a cytokinin to a receptor, and ending with regulation of a downstream cellular process, e.g. transcription.
3 O49397 (/IGI) P62598 (/IGI) Q940D0 (/IGI)
Red or far-red light signaling pathway GO:0010017
The series of molecular signals initiated upon sensing by photoreceptor molecules of red light or far red light. Red light is electromagnetic radiation of wavelength of 580-700nm. Far red light is electromagnetic radiation of wavelength 700-800nm. An example of this response is seen at the beginning of many plant species developmental stages. These include germination, and the point when cotyledon expansion is triggered. In certain species these processes take place in response to absorption of red light by the pigment molecule phytochrome, but the signal can be reversed by exposure to far red light. During the initial phase the phytochrome molecule is only present in the red light absorbing form, but on absorption of red light it changes to a far red light absorbing form, triggering progress through development. An immediate short period of exposure to far red light entirely returns the pigment to its initial state and prevents triggering of the developmental process. A thirty minute break between red and subsequent far red light exposure renders the red light effect irreversible, and development then occurs regardless of whether far red light exposure subsequently occurs.
3 O82798 (/IMP) Q8L500 (/IMP) Q93WK5 (/IMP)
Response to red light GO:0010114
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 red light stimulus. Red light is electromagnetic radiation of wavelength of 580-700nm. An example of this response is seen at the beginning of many plant species developmental stages. These include germination, and the point when cotyledon expansion is triggered. In certain species these processes take place in response to absorption of red light by the pigment molecule phytochrome, but the signal can be reversed by exposure to far red light. During the initial phase the phytochrome molecule is only present in the red light absorbing form, but on absorption of red light it changes to a far red light absorbing form, triggering progress through development. An immediate short period of exposure to far red light entirely returns the pigment to its initial state and prevents triggering of the developmental process. A thirty minute break between red and subsequent far red light exposure renders the red light effect irreversible, and development then occurs regardless of whether far red light exposure subsequently occurs.
3 O82798 (/IMP) Q9SB04 (/IMP) Q9ZWS9 (/IMP)
Regulation of chlorophyll biosynthetic process GO:0010380
Any process that modulates the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of chlorophyll, any compound of magnesium complexed in a porphyrin (tetrapyrrole) ring and which functions as a photosynthetic pigment, from less complex precursors.
3 O49397 (/IGI) P62598 (/IGI) Q940D0 (/IGI)
Regulation of anthocyanin metabolic process GO:0031537
Any process that modulates the frequency, rate or extent of chemical reactions and pathways involving anthocyanins.
3 O49397 (/IGI) P62598 (/IGI) Q940D0 (/IGI)
Shoot system development GO:0048367
The process whose specific outcome is the progression of the shoot system over time, from its formation to the mature structure.
3 O49397 (/IGI) P62598 (/IGI) Q940D0 (/IGI)
Primary root development GO:0080022
The process whose specific outcome is the progression of the primary root over time, from its formation to the mature structure. The primary root develops directly from the embryonic radicle.
3 O49397 (/IGI) P62598 (/IGI) Q940D0 (/IGI)
Regulation of cytokinin-activated signaling pathway GO:0080036
Any process that modulates the frequency, rate or extent of cytokinin signaling.
3 O49397 (/IMP) P62598 (/IMP) Q940D0 (/IMP)
Response to cytokinin GO:0009735
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 cytokinin stimulus.
2 Q9FRY8 (/TAS) Q9FRZ1 (/TAS)
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.
2 O82798 (/IMP) Q9LZJ8 (/IMP)
Negative regulation of transcription, DNA-templated GO:0045892
Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
2 Q8L500 (/IDA) Q93WK5 (/IDA)
Phosphorelay signal transduction system GO:0000160
A conserved series of molecular signals found in prokaryotes and eukaryotes; involves autophosphorylation of a histidine kinase and the transfer of the phosphate group to an aspartate that then acts as a phospho-donor to response regulator proteins.
1 O80366 (/IPI)
Phosphorelay signal transduction system GO:0000160
A conserved series of molecular signals found in prokaryotes and eukaryotes; involves autophosphorylation of a histidine kinase and the transfer of the phosphate group to an aspartate that then acts as a phospho-donor to response regulator proteins.
1 O80365 (/ISS)
Transcription, DNA-templated GO:0006351
The cellular synthesis of RNA on a template of DNA.
1 Q9LKL2 (/TAS)
Regulation of transcription, DNA-templated GO:0006355
Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
1 Q9LKL2 (/ISS)
Circadian rhythm GO:0007623
Any biological process in an organism that recurs with a regularity of approximately 24 hours.
1 Q9LKL2 (/IEP)
Circadian rhythm GO:0007623
Any biological process in an organism that recurs with a regularity of approximately 24 hours.
1 Q8L500 (/TAS)
Response to water deprivation GO:0009414
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 water deprivation stimulus, prolonged deprivation of water.
1 Q940D0 (/IMP)
Response to ethylene GO:0009723
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 an ethylene (ethene) stimulus.
1 Q9ZWJ9 (/IMP)
Response to cytokinin GO:0009735
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 cytokinin stimulus.
1 Q940D0 (/IMP)
Cytokinin-activated signaling pathway GO:0009736
A series of molecular signals generated by the binding of a cytokinin to a receptor, and ending with regulation of a downstream cellular process, e.g. transcription.
1 Q5SML5 (/IDA)
Ethylene-activated signaling pathway GO:0009873
A series of molecular signals generated by the reception of ethylene (ethene, C2H4) by a receptor and ending with modulation of a cellular process, e.g. transcription.
1 Q9ZWJ9 (/IMP)
Circumnutation GO:0010031
The organismal movement by which the tip of a plant organ follows a spiral pattern as a consequence of growth.
1 Q9LKL2 (/IMP)
Regulation of stomatal movement GO:0010119
Any process that modulates the frequency, rate or extent of stomatal movement.
1 Q9ZWJ9 (/IMP)
Leaf senescence GO:0010150
The process that occurs in a leaf near the end of its active life that is associated with the dismantling of cell components and membranes, loss of functional chloroplasts, and an overall decline in metabolism.
1 Q9ZWJ9 (/IMP)
Red light signaling pathway GO:0010161
The series of molecular signals initiated upon sensing of red light by a photoreceptor molecule. Red light is electromagnetic radiation of wavelength of 580-700nm. An example of this response is seen at the beginning of many plant species developmental stages. These include germination, and the point when cotyledon expansion is triggered. In certain species these processes take place in response to absorption of red light by the pigment molecule phytochrome, but the signal can be reversed by exposure to far red light. During the initial phase the phytochrome molecule is only present in the red light absorbing form, but on absorption of red light it changes to a far red light absorbing form, triggering progress through development. An immediate short period of exposure to far red light entirely returns the pigment to its initial state and prevents triggering of the developmental process. A thirty minute break between red and subsequent far red light exposure renders the red light effect irreversible, and development then occurs regardless of whether far red light exposure subsequently occurs.
1 Q9ZWS9 (/IMP)
Response to chitin GO:0010200
A 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 chitin stimulus.
1 Q9ZWS7 (/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 Q9LKL2 (/IMP)
Negative regulation of gene expression GO:0010629
Any process that decreases 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 Q9LKL2 (/IDA)
Stem cell population maintenance GO:0019827
The process by which an organism or tissue maintains a population of stem cells of a single type. This can be achieved by a number of mechanisms: stem cell asymmetric division maintains stem cell numbers; stem cell symmetric division increases them; maintenance of a stem cell niche maintains the conditions for commitment to the stem cell fate for some types of stem cell; stem cells may arise de novo from other cell types.
1 Q9ZWS7 (/IMP)
Negative regulation of protein binding GO:0032091
Any process that stops, prevents, or reduces the frequency, rate or extent of protein binding.
1 F4JXG7 (/IDA)
Regulation of circadian rhythm GO:0042752
Any process that modulates the frequency, rate or extent of a circadian rhythm. A circadian rhythm is a biological process in an organism that recurs with a regularity of approximately 24 hours.
1 F4JXG7 (/IEP)
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 Q5SML5 (/IDA)
Protein autophosphorylation GO:0046777
The phosphorylation by a protein of one or more of its own amino acid residues (cis-autophosphorylation), or residues on an identical protein (trans-autophosphorylation).
1 O82798 (/IDA)
Negative regulation of long-day photoperiodism, flowering GO:0048579
Any process that stops, prevents or reduces long-day photoperiodism, where the response associated with the photoperiodism is flowering. Flowering is defined by the switch from the vegetative to the reproductive phase.
1 Q0D3B6 (/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
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.
29 F4JXG7 (/IDA) O49397 (/IDA) O80365 (/IDA) O80366 (/IDA) O82798 (/IDA) P62598 (/IDA) Q0D3B6 (/IDA) Q2HWH1 (/IDA) Q2QXY3 (/IDA) Q5SML5 (/IDA)
(19 more)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
5 F4II22 (/IDA) O82798 (/IDA) Q7G8V2 (/IDA) Q9SB04 (/IDA) Q9ZWS9 (/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.
4 Q2HWH1 (/IDA) Q6K9T0 (/IDA) Q6YVX7 (/IDA) Q9FXQ7 (/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 Q9LKL2 (/TAS)
Mitochondrion GO:0005739
A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
1 Q93WK5 (/IDA)