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:

"
Immunoglobulins
".

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 1829: Interleukin-21 receptor

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
Cytokine receptor activity GO:0004896
Combining with a cytokine and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
3 Q9HBE5 (/IDA) Q9JHX3 (/IDA) Q9JHX3 (/IDA)
Transmembrane signaling receptor activity GO:0004888
Combining with an extracellular or intracellular signal and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity or state as part of signal transduction.
2 Q9JHX3 (/ISO) Q9JHX3 (/ISO)
Cytokine receptor activity GO:0004896
Combining with a cytokine and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
2 Q9JHX3 (/ISO) Q9JHX3 (/ISO)
Interleukin-21 receptor activity GO:0001532
Combining with interleukin-21 and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
1 Q9HBE5 (/NAS)
Transmembrane signaling receptor activity GO:0004888
Combining with an extracellular or intracellular signal and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity or state as part of signal transduction.
1 Q9HBE5 (/IDA)

There are 2 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
Natural killer cell activation GO:0030101
The change in morphology and behavior of a natural killer cell in response to a cytokine, chemokine, cellular ligand, or soluble factor.
1 Q9HBE5 (/NAS)
Interleukin-21-mediated signaling pathway GO:0038114
A series of molecular signals initiated by the binding of interleukin-21 to a receptor on the surface of a cell, and ending with regulation of a downstream cellular process, e.g. transcription.
1 Q9HBE5 (/TAS)

There are 2 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
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 Q9HBE5 (/TAS)
Integral component of membrane GO:0016021
The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
1 Q9HBE5 (/NAS)