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 5: P2X purinoceptor

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 7 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
Purinergic nucleotide receptor activity GO:0001614
Combining with a purine nucleotide and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
1 A3QK06 (/IC)
Purinergic nucleotide receptor activity GO:0001614
Combining with a purine nucleotide and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
1 Q93086 (/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 Q93086 (/TAS)
Extracellularly ATP-gated cation channel activity GO:0004931
Enables the transmembrane transfer of a cation by a channel that opens when ATP is bound by the channel complex or one of its constituent parts on the extracellular side of the plasma membrane.
1 A3QK06 (/IDA)
Extracellularly ATP-gated cation channel activity GO:0004931
Enables the transmembrane transfer of a cation by a channel that opens when ATP is bound by the channel complex or one of its constituent parts on the extracellular side of the plasma membrane.
1 Q93086 (/NAS)
Ion channel activity GO:0005216
Enables the facilitated diffusion of an ion (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism. May be either selective (it enables passage of a specific ion only) or non-selective (it enables passage of two or more ions of same charge but different size).
1 Q93086 (/TAS)
ATP binding GO:0005524
Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
1 Q93086 (/NAS)

There are 5 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
Signal transduction GO:0007165
The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell.
1 Q93086 (/TAS)
Nervous system development GO:0007399
The process whose specific outcome is the progression of nervous tissue over time, from its formation to its mature state.
1 Q93086 (/TAS)
Blood coagulation GO:0007596
The sequential process in which the multiple coagulation factors of the blood interact, ultimately resulting in the formation of an insoluble fibrin clot; it may be divided into three stages: stage 1, the formation of intrinsic and extrinsic prothrombin converting principle; stage 2, the formation of thrombin; stage 3, the formation of stable fibrin polymers.
1 Q93086 (/TAS)
Positive regulation of calcium ion transport into cytosol GO:0010524
Any process that increases the rate of the directed movement of calcium ions into the cytosol of a cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components.
1 Q93086 (/NAS)
Positive regulation of calcium-mediated signaling GO:0050850
Any process that activates or increases the frequency, rate or extent of calcium-mediated signaling.
1 Q93086 (/NAS)

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
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 K7EQ78 (/IDA) Q93086 (/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 Q93086 (/TAS)
Integral component of plasma membrane GO:0005887
The component of the plasma 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 Q93086 (/TAS)