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 30: Ras guanine nucleotide exchange factor A

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.
2 Q54PQ4 (/IDA) Q8SSQ0 (/IDA)
Guanyl-nucleotide exchange factor activity GO:0005085
Stimulates the exchange of guanyl nucleotides associated with a GTPase. 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 Q8IS21 (/IGI)
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 Q54PQ4 (/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).
1 Q54PQ4 (/IPI)
Guanylate cyclase activator activity GO:0030250
Binds to and increases the activity of guanylate cyclase.
1 Q54PQ4 (/IMP)

There are 25 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
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 Q54PQ4 (/IDA) Q8SSQ0 (/IDA)
Aggregation involved in sorocarp development GO:0031152
The process whose specific outcome is the progression of the aggregate over time, from its formation to the point when a slug is formed. Aggregate development begins in response to starvation and continues by the chemoattractant-mediated movement of cells toward each other. The aggregate is a multicellular structure that gives rise to the slug.
2 Q54PQ4 (/IMP) Q8IS21 (/IMP)
Positive regulation of protein kinase B signaling GO:0051897
Any process that activates or increases the frequency, rate or extent of protein kinase B signaling, a series of reactions mediated by the intracellular serine/threonine kinase protein kinase B.
2 Q54PQ4 (/IMP) Q8IS21 (/IMP)
Phagocytosis GO:0006909
A vesicle-mediated transport process that results in the engulfment of external particulate material by phagocytes and their delivery to the lysosome. The particles are initially contained within phagocytic vacuoles (phagosomes), which then fuse with primary lysosomes to effect digestion of the particles.
1 Q8IS21 (/IMP)
Chemotaxis GO:0006935
The directed movement of a motile cell or organism, or the directed growth of a cell guided by a specific chemical concentration gradient. Movement may be towards a higher concentration (positive chemotaxis) or towards a lower concentration (negative chemotaxis).
1 Q54PQ4 (/IMP)
Actin filament organization GO:0007015
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments. Includes processes that control the spatial distribution of actin filaments, such as organizing filaments into meshworks, bundles, or other structures, as by cross-linking.
1 Q8IS21 (/IMP)
Activation of adenylate cyclase activity GO:0007190
Any process that initiates the activity of the inactive enzyme adenylate cyclase.
1 Q54PQ4 (/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.
1 Q8IS21 (/ISS)
Multicellular organism development GO:0007275
The biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote or a young adult) to a later condition (e.g. a multicellular animal or an aged adult).
1 Q8IS21 (/IMP)
Positive regulation of gene expression GO:0010628
Any process that increases 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 or circRNA (for protein-coding genes) and the translation of that mRNA or circRNA into protein. Protein maturation is included when required to form an active form of a product from an inactive precursor form.
1 Q54PQ4 (/IMP)
Sexual reproduction GO:0019953
A reproduction process that creates a new organism by combining the genetic material of two gametes, which may come from two organisms or from a single organism, in the case of self-fertilizing hermaphrodites, e.g. C. elegans, or self-fertilization in plants. It occurs both in eukaryotes and prokaryotes: in multicellular eukaryotic organisms, an individual is created anew; in prokaryotes, the initial cell has additional or transformed genetic material. In a process called genetic recombination, genetic material (DNA) originating from two gametes join up so that homologous sequences are aligned with each other, and this is followed by exchange of genetic information. After the new recombinant chromosome is formed, it is passed on to progeny.
1 Q8IS21 (/IEP)
Sorocarp development GO:0030587
The process whose specific outcome is the progression of the sorocarp over time, from its formation to the mature structure. The process begins with the aggregation of individual cells and ends with the mature sorocarp. The sorocarp is a structure containing a spore-bearing sorus that sits on top of a stalk. An example of this process is found in Dictyostelium discoideum.
1 Q54PQ4 (/HMP)
Cortical actin cytoskeleton organization GO:0030866
A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of actin-based cytoskeletal structures in the cell cortex, i.e. just beneath the plasma membrane.
1 Q8IS21 (/IMP)
Chemotaxis to cAMP GO:0043327
The directed movement of a motile cell or organism in response to the presence of 3',5'-cAMP.
1 Q54PQ4 (/IMP)
Negative regulation of MAP kinase activity GO:0043407
Any process that stops, prevents, or reduces the frequency, rate or extent of MAP kinase activity.
1 Q54PQ4 (/IMP)
Positive regulation of GTPase activity GO:0043547
Any process that activates or increases the activity of a GTPase.
1 Q54PQ4 (/IMP)
Positive regulation of endocytosis GO:0045807
Any process that activates or increases the frequency, rate or extent of endocytosis.
1 Q8IS21 (/IMP)
Positive regulation of Ras protein signal transduction GO:0046579
Any process that activates or increases the frequency, rate or extent of Ras protein signal transduction.
1 Q54PQ4 (/IMP)
Cell motility GO:0048870
Any process involved in the controlled self-propelled movement of a cell that results in translocation of the cell from one place to another.
1 Q8IS21 (/IMP)
Positive regulation of phagocytosis GO:0050766
Any process that activates or increases the frequency, rate or extent of phagocytosis.
1 Q8IS21 (/IMP)
Negative regulation of cellular component movement GO:0051271
Any process that stops, prevents, or reduces the frequency, rate or extent of the movement of a cellular component.
1 Q8IS21 (/IMP)
Positive regulation of protein serine/threonine kinase activity GO:0071902
Any process that increases the rate, frequency, or extent of protein serine/threonine kinase activity.
1 Q54PQ4 (/IMP)
Activation of GTPase activity GO:0090630
Any process that initiates the activity of an inactive GTPase through the replacement of GDP by GTP.
1 Q54PQ4 (/IMP)
Regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway GO:0106070
Any process that modulates the frequency, rate or extent of an adenylate cyclase-activating G protein-coupled receptor signaling pathway
1 Q8IS21 (/IMP)
Response to differentiation-inducing factor 1 GO:1903013
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 1-(3,5-dichloro-2,6-dihydroxy-4-methoxyphenyl)hexan-1-one stimulus.
1 Q8SSQ0 (/HDA)

There are 3 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
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q8IS21 (/TAS)
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 Q54PQ4 (/IDA)
Ras guanyl-nucleotide exchange factor complex GO:1905742
A protein complex which is capable of Ras guanyl-nucleotide exchange factor activity.
1 Q54PQ4 (/IDA)