The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was named:

"
Neurotransmitter-gated ion-channel transmembrane domain
".

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 56: 5-hydroxytryptamine receptor 3B

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
Serotonin-gated cation-selective channel activity GO:0022850
Enables the transmembrane transfer of a cation by a channel that opens when serotonin has been bound by the channel complex or one of its constituent parts.
1 Q9JHJ5 (/IDA)
Serotonin-gated cation-selective channel activity GO:0022850
Enables the transmembrane transfer of a cation by a channel that opens when serotonin has been bound by the channel complex or one of its constituent parts.
1 O95264 (/IGI)
Serotonin-gated cation-selective channel activity GO:0022850
Enables the transmembrane transfer of a cation by a channel that opens when serotonin has been bound by the channel complex or one of its constituent parts.
1 Q9JHJ5 (/ISO)

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
Chemical synaptic transmission GO:0007268
The vesicular release of classical neurotransmitter molecules from a presynapse, across a chemical synapse, the subsequent activation of neurotransmitter receptors at the postsynapse of a target cell (neuron, muscle, or secretory cell) and the effects of this activation on the postsynaptic membrane potential and ionic composition of the postsynaptic cytosol. This process encompasses both spontaneous and evoked release of neurotransmitter and all parts of synaptic vesicle exocytosis. Evoked transmission starts with the arrival of an action potential at the presynapse.
1 O95264 (/TAS)
Positive regulation of ion transmembrane transporter activity GO:0032414
Any process that activates or increases the activity of an ion transporter.
1 Q9JJ16 (/IDA)
Positive regulation of ion transmembrane transporter activity GO:0032414
Any process that activates or increases the activity of an ion transporter.
1 Q9JHJ5 (/ISO)
Cellular response to growth factor stimulus GO:0071363
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 a growth factor stimulus.
1 Q9JJ16 (/IEP)

There are 10 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 O95264 (/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 Q9JHJ5 (/IDA)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
1 O95264 (/IDA)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
1 Q9JHJ5 (/ISO)
Axon GO:0030424
The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.
1 Q9JJ16 (/IDA)
Axon GO:0030424
The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.
1 Q9JHJ5 (/ISO)
Neuronal cell body GO:0043025
The portion of a neuron that includes the nucleus, but excludes cell projections such as axons and dendrites.
1 Q9JJ16 (/IDA)
Neuronal cell body GO:0043025
The portion of a neuron that includes the nucleus, but excludes cell projections such as axons and dendrites.
1 Q9JHJ5 (/ISO)
Serotonin-activated cation-selective channel complex GO:1904602
A protein complex which is capable of serotonin-activated cation-selective channel activity. Mainly found in pre- and postsynaptic membranes of the brain and gastrointestinal tract. Depending on its location it transports Ca2+, Mg2+, Na+ or K+. It is always a pentamer, containing at least the 5HT3A subunit forming 5HT3A homopentamers or 5HT3A/B heteropentamers. In human, 5HT3A/C, A/D and A/E heteropentamers also exist.
1 O95264 (/IGI)
Serotonin-activated cation-selective channel complex GO:1904602
A protein complex which is capable of serotonin-activated cation-selective channel activity. Mainly found in pre- and postsynaptic membranes of the brain and gastrointestinal tract. Depending on its location it transports Ca2+, Mg2+, Na+ or K+. It is always a pentamer, containing at least the 5HT3A subunit forming 5HT3A homopentamers or 5HT3A/B heteropentamers. In human, 5HT3A/C, A/D and A/E heteropentamers also exist.
1 Q9JHJ5 (/ISO)
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