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:

"
Son of sevenless (SoS) protein Chain: S 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 20: Cell division control protein 25

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 5 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
Ras guanyl-nucleotide exchange factor activity GO:0005088
Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ras superfamily. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.
4 P04821 (/IDA) P04821 (/IDA) P0CF34 (/IDA) P43069 (/IDA)
Ras guanyl-nucleotide exchange factor activity GO:0005088
Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ras superfamily. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.
3 P04821 (/IMP) P04821 (/IMP) Q9USU1 (/IMP)
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).
3 P04821 (/IPI) P04821 (/IPI) P0CF34 (/IPI)
Ras guanyl-nucleotide exchange factor activity GO:0005088
Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ras superfamily. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.
1 P26674 (/EXP)
Ras guanyl-nucleotide exchange factor activity GO:0005088
Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Ras superfamily. Under normal cellular physiological conditions, the concentration of GTP is higher than that of GDP, favoring the replacement of GDP by GTP in association with the GTPase.
1 P43069 (/IGI)

There are 16 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
Replicative cell aging GO:0001302
The process associated with progression of the cell from its inception to the end of its lifespan that occurs as the cell continues cycles of growth and division.
2 P04821 (/IMP) P04821 (/IMP)
Traversing start control point of mitotic cell cycle GO:0007089
A cell cycle process by which a cell commits to entering S phase via a positive feedback mechanism between the regulation of transcription and G1 CDK activity.
2 P04821 (/IMP) P04821 (/IMP)
Ras protein signal transduction GO:0007265
A series of molecular signals within the cell that are mediated by a member of the Ras superfamily of proteins switching to a GTP-bound active state.
2 P04821 (/IDA) P04821 (/IDA)
Ras protein signal transduction GO:0007265
A series of molecular signals within the cell that are mediated by a member of the Ras superfamily of proteins switching to a GTP-bound active state.
2 P0CF34 (/IGI) P43069 (/IGI)
Ras protein signal transduction GO:0007265
A series of molecular signals within the cell that are mediated by a member of the Ras superfamily of proteins switching to a GTP-bound active state.
2 P04821 (/IMP) P04821 (/IMP)
Regulation of cell cycle GO:0051726
Any process that modulates the rate or extent of progression through the cell cycle.
2 P04821 (/IMP) P04821 (/IMP)
Conjugation with cellular fusion GO:0000747
A conjugation process that results in the union of cellular and genetic information from compatible mating types. An example of this process is found in Saccharomyces cerevisiae.
1 P26674 (/IMP)
Pheromone-dependent signal transduction involved in conjugation with cellular fusion GO:0000750
A signal transduction process resulting in the relay, amplification or dampening of a signal generated in response to pheromone exposure in organisms that undergo conjugation with cellular fusion. An example of this process is found in Saccharomyces cerevisiae.
1 P26674 (/IMP)
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 P43069 (/IMP)
CAMP-mediated signaling GO:0019933
Any intracellular signal transduction in which the signal is passed on within the cell via cyclic AMP (cAMP). Includes production of cAMP, and downstream effectors that further transmit the signal within the cell.
1 P43069 (/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 P43069 (/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 P43069 (/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 P43069 (/IMP)
Cellular response to glucose stimulus GO:0071333
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 glucose stimulus.
1 P43069 (/IMP)
Establishment or maintenance of cell polarity regulating cell shape GO:0071963
Any cellular process that results in the specification, formation or maintenance of a polarized intracellular organization or cell growth patterns that regulate the shape of a cell.
1 Q9USU1 (/IGI)
Establishment or maintenance of cell polarity regulating cell shape GO:0071963
Any cellular process that results in the specification, formation or maintenance of a polarized intracellular organization or cell growth patterns that regulate the shape of a cell.
1 Q9USU1 (/IMP)

There are 8 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.
2 P04821 (/IDA) P04821 (/IDA)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 P04821 (/IDA) P04821 (/IDA)
Endoplasmic reticulum membrane GO:0005789
The lipid bilayer surrounding the endoplasmic reticulum.
2 P04821 (/IDA) P04821 (/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 P26674 (/HDA) Q9USU1 (/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.
2 P04821 (/IDA) P04821 (/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.
2 P04821 (/IDA) P04821 (/IDA)
Membrane GO:0016020
A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
1 P0CF34 (/IDA)
Actin fusion focus GO:1990819
A focus at the mating projection tip where the cell wall is degraded during conjugation with cellular fusion. Actin filaments form an aster-like structure from this location.
1 P26674 (/IDA)