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: 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 2: Interleukin-2 receptor subunit alpha

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
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 P01589 (/IPI) P01590 (/IPI) P01590 (/IPI)
Interleukin-2 receptor activity GO:0004911
Combining with interleukin-2 and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
2 P01590 (/IMP) P01590 (/IMP)
Interleukin-2 receptor activity GO:0004911
Combining with interleukin-2 and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
2 P01590 (/ISO) P01590 (/ISO)
Interleukin-2 receptor activity GO:0004911
Combining with interleukin-2 and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
1 P26897 (/IPI)
Interleukin-2 receptor activity GO:0004911
Combining with interleukin-2 and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
1 P01589 (/TAS)

There are 27 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
Inflammatory response to antigenic stimulus GO:0002437
An inflammatory response to an antigenic stimulus, which can be include any number of T cell or B cell epitopes.
2 P01590 (/ISO) P01590 (/ISO)
Regulation of T cell tolerance induction GO:0002664
Any process that modulates the frequency, rate, or extent of T cell tolerance induction.
2 P01590 (/ISO) P01590 (/ISO)
Activation-induced cell death of T cells GO:0006924
A T cell apoptotic process that occurs towards the end of the expansion phase following the initial activation of mature T cells by antigen and is triggered by T cell receptor stimulation and signals transmitted via various surface-expressed members of the TNF receptor family such as Fas ligand, Fas, and TNF and the p55 and p75 TNF receptors.
2 P01590 (/IMP) P01590 (/IMP)
Notch signaling pathway GO:0007219
A series of molecular signals initiated by the binding of an extracellular ligand to the receptor Notch on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
2 P01590 (/IGI) P01590 (/IGI)
Positive regulation of T cell proliferation GO:0042102
Any process that activates or increases the rate or extent of T cell proliferation.
2 P01590 (/ISO) P01590 (/ISO)
Positive regulation of activated T cell proliferation GO:0042104
Any process that activates or increases the rate or extent of activated T cell proliferation.
2 P01590 (/IMP) P01590 (/IMP)
Negative regulation of T cell proliferation GO:0042130
Any process that stops, prevents or reduces the rate or extent of T cell proliferation.
2 P01590 (/IMP) P01590 (/IMP)
T cell homeostasis GO:0043029
The process of regulating the proliferation and elimination of T cells such that the total number of T cells within a whole or part of an organism is stable over time in the absence of an outside stimulus.
2 P01590 (/IMP) P01590 (/IMP)
Positive regulation of T cell differentiation GO:0045582
Any process that activates or increases the frequency, rate or extent of T cell differentiation.
2 P01590 (/ISO) P01590 (/ISO)
Regulation of T cell homeostatic proliferation GO:0046013
Any process that modulates the frequency, rate or extent of resting T cell proliferation.
2 P01590 (/IMP) P01590 (/IMP)
Negative regulation of lymphocyte proliferation GO:0050672
Any process that stops, prevents or reduces the rate or extent of lymphocyte proliferation.
2 P01590 (/IMP) P01590 (/IMP)
Negative regulation of defense response to virus GO:0050687
Any process that stops, prevents or reduces the rate or extent of antiviral mechanisms, thereby facilitating viral replication.
2 P01590 (/ISO) P01590 (/ISO)
Negative regulation of inflammatory response GO:0050728
Any process that stops, prevents, or reduces the frequency, rate or extent of the inflammatory response.
2 P01590 (/IMP) P01590 (/IMP)
Negative regulation of immune response GO:0050777
Any process that stops, prevents, or reduces the frequency, rate or extent of the immune response, the immunological reaction of an organism to an immunogenic stimulus.
2 P01590 (/ISO) P01590 (/ISO)
MAPK cascade GO:0000165
An intracellular protein kinase cascade containing at least a MAPK, a MAPKK and a MAP3K. The cascade can also contain an additional tiers: the upstream MAP4K. The kinases in each tier phosphorylate and activate the kinase in the downstream tier to transmit a signal within a cell.
1 P01589 (/TAS)
Inflammatory response to antigenic stimulus GO:0002437
An inflammatory response to an antigenic stimulus, which can be include any number of T cell or B cell epitopes.
1 P26897 (/IMP)
Regulation of T cell tolerance induction GO:0002664
Any process that modulates the frequency, rate, or extent of T cell tolerance induction.
1 P01589 (/IMP)
Apoptotic process GO:0006915
A programmed cell death process which begins when a cell receives an internal (e.g. DNA damage) or external signal (e.g. an extracellular death ligand), and proceeds through a series of biochemical events (signaling pathway phase) which trigger an execution phase. The execution phase is the last step of an apoptotic process, and is typically characterized by rounding-up of the cell, retraction of pseudopodes, reduction of cellular volume (pyknosis), chromatin condensation, nuclear fragmentation (karyorrhexis), plasma membrane blebbing and fragmentation of the cell into apoptotic bodies. When the execution phase is completed, the cell has died.
1 P01589 (/TAS)
Immune response GO:0006955
Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
1 P01589 (/TAS)
Cell surface receptor signaling pathway GO:0007166
A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription.
1 P01589 (/TAS)
Cytokine-mediated signaling pathway GO:0019221
A series of molecular signals initiated by the binding of a cytokine to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.
1 P01589 (/TAS)
Interleukin-2-mediated signaling pathway GO:0038110
A series of molecular signals initiated by the binding of interleukin-2 to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.
1 P01589 (/TAS)
Positive regulation of T cell proliferation GO:0042102
Any process that activates or increases the rate or extent of T cell proliferation.
1 P26897 (/IMP)
Positive regulation of T cell differentiation GO:0045582
Any process that activates or increases the frequency, rate or extent of T cell differentiation.
1 P26897 (/IMP)
Regulation of regulatory T cell differentiation GO:0045589
Any process that modulates the frequency, rate or extent of differentiation of regulatory T cells.
1 P01589 (/TAS)
Negative regulation of defense response to virus GO:0050687
Any process that stops, prevents or reduces the rate or extent of antiviral mechanisms, thereby facilitating viral replication.
1 P26897 (/IMP)
Negative regulation of immune response GO:0050777
Any process that stops, prevents, or reduces the frequency, rate or extent of the immune response, the immunological reaction of an organism to an immunogenic stimulus.
1 P26897 (/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
External side of plasma membrane GO:0009897
The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
2 P01590 (/IDA) P01590 (/IDA)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
2 P01590 (/ISO) P01590 (/ISO)
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 P01589 (/TAS)
Interleukin-2 receptor complex GO:0005893
A protein complex that binds interleukin-2; comprises alpha, beta, and gamma subunits.
1 P01589 (/TAS)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
1 P26897 (/IDA)