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:

"
SH3 Domains
".

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 19130: Intersectin 1 isoform ITSN-l (Predicted)

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 10 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).
3 Q15811 (/IPI) Q9WVE9 (/IPI) Q9Z0R4 (/IPI)
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 Q15811 (/NAS)
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 Q15811 (/TAS)
Rho guanyl-nucleotide exchange factor activity GO:0005089
Stimulates the exchange of guanyl nucleotides associated with a GTPase of the Rho family. 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 Q15811 (/TAS)
Calcium ion binding GO:0005509
Interacting selectively and non-covalently with calcium ions (Ca2+).
1 Q15811 (/NAS)
Kinase activator activity GO:0019209
Binds to and increases the activity of a kinase, an enzyme which catalyzes of the transfer of a phosphate group, usually from ATP, to a substrate molecule.
1 Q9Z0R4 (/IDA)
Protein complex scaffold GO:0032947
A structural molecule activity that provides a physical support for the assembly of a multiprotein complex. The scaffold may or may not be part of the final complex.
1 Q15811 (/IDA)
Protein complex scaffold GO:0032947
A structural molecule activity that provides a physical support for the assembly of a multiprotein complex. The scaffold may or may not be part of the final complex.
1 Q9Z0R4 (/ISO)
Proline-rich region binding GO:0070064
Interacting selectively and non-covalently with a proline-rich region, i.e. a region that contains a high proportion of proline residues, in a protein.
1 Q15811 (/IPI)
Proline-rich region binding GO:0070064
Interacting selectively and non-covalently with a proline-rich region, i.e. a region that contains a high proportion of proline residues, in a protein.
1 Q9Z0R4 (/ISO)

There are 9 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
Ephrin receptor signaling pathway GO:0048013
The series of molecular signals generated as a consequence of an ephrin receptor binding to an ephrin.
2 Q15811 (/TAS) Q9Z0R4 (/TAS)
Exocytosis GO:0006887
A process of secretion by a cell that results in the release of intracellular molecules (e.g. hormones, matrix proteins) contained within a membrane-bounded vesicle by fusion of the vesicle with the plasma membrane of a cell. This process begins with steps that prepare vesicles for fusion with the membrane (tethering and docking) and ends when vesicle fusion is complete. This is the process in which most molecules are secreted from eukaryotic cells.
1 Q9WVE9 (/TAS)
Small GTPase mediated signal transduction GO:0007264
Any series of molecular signals in which a small monomeric GTPase relays one or more of the signals.
1 Q9Z0R4 (/IDA)
Positive regulation of apoptotic process GO:0043065
Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
1 Q15811 (/TAS)
Negative regulation of neuron apoptotic process GO:0043524
Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process in neurons.
1 Q9Z0R4 (/IMP)
Synaptic vesicle endocytosis GO:0048488
Clathrin-mediated endocytosis of presynaptic membrane that recycles synaptic vesicle membrane and its components following synaptic vesicle exocytosis. This process starts with coating of the membrane with adaptor proteins and clathrin prior to invagination and ends when uncoating has finished.
1 Q15811 (/TAS)
Regulation of small GTPase mediated signal transduction GO:0051056
Any process that modulates the frequency, rate or extent of small GTPase mediated signal transduction.
1 Q15811 (/TAS)
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.
1 Q9Z0R4 (/IDA)
Membrane organization GO:0061024
A process which results in the assembly, arrangement of constituent parts, or disassembly of a membrane. A membrane is a double layer of lipid molecules that encloses all cells, and, in eukaryotes, many organelles; may be a single or double lipid bilayer; also includes associated proteins.
1 Q15811 (/TAS)

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
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 Q15811 (/TAS) Q9Z0R4 (/TAS)
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 Q15811 (/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 Q9Z0R4 (/ISO)
Clathrin-coated pit GO:0005905
A part of the endomembrane system in the form of an invagination of a membrane upon which a clathrin coat forms, and that can be converted by vesicle budding into a clathrin-coated vesicle. Coated pits form on the plasma membrane, where they are involved in receptor-mediated selective transport of many proteins and other macromolecules across the cell membrane, in the trans-Golgi network, and on some endosomes.
1 Q15811 (/IDA)
Clathrin-coated pit GO:0005905
A part of the endomembrane system in the form of an invagination of a membrane upon which a clathrin coat forms, and that can be converted by vesicle budding into a clathrin-coated vesicle. Coated pits form on the plasma membrane, where they are involved in receptor-mediated selective transport of many proteins and other macromolecules across the cell membrane, in the trans-Golgi network, and on some endosomes.
1 Q9Z0R4 (/ISO)
Lamellipodium GO:0030027
A thin sheetlike process extended by the leading edge of a migrating cell or extending cell process; contains a dense meshwork of actin filaments.
1 Q9Z0R4 (/IDA)
Endocytic vesicle GO:0030139
A membrane-bounded intracellular vesicle formed by invagination of the plasma membrane around an extracellular substance. Endocytic vesicles fuse with early endosomes to deliver the cargo for further sorting.
1 Q9Z0R4 (/IDA)
Terminal bouton GO:0043195
Terminal inflated portion of the axon, containing the specialized apparatus necessary to release neurotransmitters. The axon terminus is considered to be the whole region of thickening and the terminal bouton is a specialized region of it.
1 Q9WVE9 (/IDA)