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:

"
atp-gated p2x4 ion channel
".

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 16: P2X receptor B

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 3 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
Calcium-release channel activity GO:0015278
Enables the transmembrane transfer of a calcium ion from intracellular stores by a channel that opens when a specific intracellular ligand has been bound by the channel complex or one of its constituent parts.
3 Q54J33 (/IGI) Q553Y0 (/IGI) Q553Y1 (/IGI)
ATP binding GO:0005524
Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
1 Q553Y1 (/IC)
ATP-gated ion channel activity GO:0035381
Enables the transmembrane transfer of an ion by a channel that opens when ATP has been bound by the channel complex or one of its constituent parts.
1 Q553Y1 (/IDA)

There are 4 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
Regulation of calcium-mediated signaling GO:0050848
Any process that modulates the frequency, rate or extent of calcium-mediated signaling, the process in which a cell uses calcium ions to convert an extracellular signal into a response.
3 Q54J33 (/IGI) Q553Y0 (/IGI) Q553Y1 (/IGI)
Calcium ion transmembrane transport GO:0070588
A process in which a calcium ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore.
3 Q54J33 (/IGI) Q553Y0 (/IGI) Q553Y1 (/IGI)
Cellular hypotonic response GO:0071476
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 detection of, or exposure to, a hypotonic environment, i.e. an environment with a lower concentration of solutes than the organism or cell.
3 Q54J33 (/IGI) Q553Y0 (/IGI) Q553Y1 (/IGI)
Ion transport GO:0006811
The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
1 Q553Y1 (/IDA)

There are 1 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
Contractile vacuolar membrane GO:0031164
The lipid bilayer surrounding the contractile vacuole.
3 Q54J33 (/IDA) Q553Y0 (/IDA) Q553Y1 (/IDA)