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.
« Back to all FunFams

FunFam 63: Gamma-aminobutyric acid type B receptor subunit

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 8 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
G protein-coupled GABA receptor activity GO:0004965
Combining with the amino acid gamma-aminobutyric acid (GABA, 4-aminobutyrate) and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex.
8 A0A0B4LHR4 (/ISS) Q058U9 (/ISS) Q8IN24 (/ISS) Q9BML5 (/ISS) Q9BML6 (/ISS) Q9VPS7 (/ISS) Q9Y133 (/ISS) X2J962 (/ISS)
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).
7 O75899 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI) O88871 (/IPI) Q80T41 (/IPI)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
6 A0A0B4LHR4 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI)
G protein-coupled GABA receptor activity GO:0004965
Combining with the amino acid gamma-aminobutyric acid (GABA, 4-aminobutyrate) and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex.
5 O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS)
G protein-coupled GABA receptor activity GO:0004965
Combining with the amino acid gamma-aminobutyric acid (GABA, 4-aminobutyrate) and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex.
2 A0A0B4LHR4 (/IDA) O88871 (/IDA)
G protein-coupled GABA receptor activity GO:0004965
Combining with the amino acid gamma-aminobutyric acid (GABA, 4-aminobutyrate) and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex.
1 H2L0Q3 (/IMP)
G protein-coupled GABA receptor activity GO:0004965
Combining with the amino acid gamma-aminobutyric acid (GABA, 4-aminobutyrate) and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex.
1 Q80T41 (/ISO)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
1 Q80T41 (/ISO)

There are 19 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
G protein-coupled receptor signaling pathway GO:0007186
A series of molecular signals that proceeds with an activated receptor promoting the exchange of GDP for GTP on the alpha-subunit of an associated heterotrimeric G-protein complex. The GTP-bound activated alpha-G-protein then dissociates from the beta- and gamma-subunits to further transmit the signal within the cell. The pathway begins with receptor-ligand interaction, or for basal GPCR signaling the pathway begins with the receptor activating its G protein in the absence of an agonist, and ends with regulation of a downstream cellular process, e.g. transcription. The pathway can start from the plasma membrane, Golgi or nuclear membrane (PMID:24568158 and PMID:16902576).
8 A0A0B4LHR4 (/ISS) Q058U9 (/ISS) Q8IN24 (/ISS) Q9BML5 (/ISS) Q9BML6 (/ISS) Q9VPS7 (/ISS) Q9Y133 (/ISS) X2J962 (/ISS)
Gamma-aminobutyric acid signaling pathway GO:0007214
The series of molecular signals generated by the binding of gamma-aminobutyric acid (GABA, 4-aminobutyrate), an amino acid which acts as a neurotransmitter in some organisms, to a cell surface receptor.
7 A0A0B4LHR4 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA) O88871 (/IDA)
G protein-coupled receptor signaling pathway GO:0007186
A series of molecular signals that proceeds with an activated receptor promoting the exchange of GDP for GTP on the alpha-subunit of an associated heterotrimeric G-protein complex. The GTP-bound activated alpha-G-protein then dissociates from the beta- and gamma-subunits to further transmit the signal within the cell. The pathway begins with receptor-ligand interaction, or for basal GPCR signaling the pathway begins with the receptor activating its G protein in the absence of an agonist, and ends with regulation of a downstream cellular process, e.g. transcription. The pathway can start from the plasma membrane, Golgi or nuclear membrane (PMID:24568158 and PMID:16902576).
5 O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS)
Negative regulation of adenylate cyclase activity GO:0007194
Any process that stops, prevents, or reduces the frequency, rate or extent of adenylate cyclase activity.
5 O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS)
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.
5 O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS)
Neuron-glial cell signaling GO:0150099
Cell-cell signaling that mediates the transfer of information from a neuron to a glial cell. This signalling has been shown to be mediated by various molecules released by different types of neurons, e.g. glutamate, gamma-amino butyric acid (GABA), noradrenaline, acetylcholine, dopamine and adenosine.
5 O75899 (/ISS) O75899 (/ISS) O75899 (/ISS) O75899 (/ISS) O75899 (/ISS)
Sleep GO:0030431
Any process in which an organism enters and maintains a periodic, readily reversible state of reduced awareness and metabolic activity. Usually accompanied by physical relaxation, the onset of sleep in humans and other mammals is marked by a change in the electrical activity of the brain.
4 Q058U9 (/IMP) Q9BML5 (/IMP) Q9VPS7 (/IMP) X2J962 (/IMP)
Negative regulation of synaptic vesicle fusion to presynaptic active zone membrane GO:0031631
Any process that stops, prevents, or reduces the frequency, rate or extent of synaptic vesicle fusion to the presynaptic membrane.
4 A0A0B4LHR4 (/IDA) Q8IN24 (/IDA) Q9BML6 (/IDA) Q9Y133 (/IDA)
Olfactory behavior GO:0042048
The behavior of an organism in response to an odor.
4 A0A0B4LHR4 (/IDA) Q8IN24 (/IDA) Q9BML6 (/IDA) Q9Y133 (/IDA)
Negative regulation of insulin secretion GO:0046676
Any process that stops, prevents, or reduces the frequency, rate or extent of the regulated release of insulin.
4 A0A0B4LHR4 (/IMP) Q8IN24 (/IMP) Q9BML6 (/IMP) Q9Y133 (/IMP)
Cellular response to mechanical stimulus GO:0071260
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 mechanical stimulus.
4 A0A0B4LHR4 (/IMP) Q8IN24 (/IMP) Q9BML6 (/IMP) Q9Y133 (/IMP)
G protein-coupled receptor signaling pathway GO:0007186
A series of molecular signals that proceeds with an activated receptor promoting the exchange of GDP for GTP on the alpha-subunit of an associated heterotrimeric G-protein complex. The GTP-bound activated alpha-G-protein then dissociates from the beta- and gamma-subunits to further transmit the signal within the cell. The pathway begins with receptor-ligand interaction, or for basal GPCR signaling the pathway begins with the receptor activating its G protein in the absence of an agonist, and ends with regulation of a downstream cellular process, e.g. transcription. The pathway can start from the plasma membrane, Golgi or nuclear membrane (PMID:24568158 and PMID:16902576).
1 H2L0Q3 (/IMP)
Adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway GO:0007193
The series of molecular signals generated as a consequence of a G protein-coupled receptor binding to its physiological ligand, where the pathway proceeds through inhibition of adenylyl cyclase activity and a subsequent decrease in the concentration of cyclic AMP (cAMP).
1 A0A0B4LHR4 (/IDA)
Gamma-aminobutyric acid signaling pathway GO:0007214
The series of molecular signals generated by the binding of gamma-aminobutyric acid (GABA, 4-aminobutyrate), an amino acid which acts as a neurotransmitter in some organisms, to a cell surface receptor.
1 Q80T41 (/ISO)
Gamma-aminobutyric acid signaling pathway GO:0007214
The series of molecular signals generated by the binding of gamma-aminobutyric acid (GABA, 4-aminobutyrate), an amino acid which acts as a neurotransmitter in some organisms, to a cell surface receptor.
1 Q80T41 (/ISS)
Negative regulation of synaptic transmission, cholinergic GO:0032223
Any process that stops, prevents, or reduces the frequency, rate or extent of cholinergic synaptic transmission, the process of communication from a neuron to another neuron across a synapse using the neurotransmitter acetylcholine.
1 H2L0Q3 (/IMP)
Response to drug GO:0042493
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a drug stimulus. A drug is a substance used in the diagnosis, treatment or prevention of a disease.
1 H2L0Q3 (/IMP)
Neuron-glial cell signaling GO:0150099
Cell-cell signaling that mediates the transfer of information from a neuron to a glial cell. This signalling has been shown to be mediated by various molecules released by different types of neurons, e.g. glutamate, gamma-amino butyric acid (GABA), noradrenaline, acetylcholine, dopamine and adenosine.
1 O88871 (/IGI)
Neuron-glial cell signaling GO:0150099
Cell-cell signaling that mediates the transfer of information from a neuron to a glial cell. This signalling has been shown to be mediated by various molecules released by different types of neurons, e.g. glutamate, gamma-amino butyric acid (GABA), noradrenaline, acetylcholine, dopamine and adenosine.
1 Q80T41 (/ISO)

There are 23 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
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.
8 A0A0B4LHR4 (/ISS) Q058U9 (/ISS) Q8IN24 (/ISS) Q9BML5 (/ISS) Q9BML6 (/ISS) Q9VPS7 (/ISS) Q9Y133 (/ISS) X2J962 (/ISS)
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.
6 A0A0B4LHR4 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA)
G protein-coupled receptor heterodimeric complex GO:0038039
A protein complex that contains two G protein-coupled receptors (GPCRs) of different subtypes. Formation of a GPCR heterodimer may alter the functional property of the GPCR.
6 A0A0B4LHR4 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI) O75899 (/IPI)
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.
5 O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/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.
5 O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS) O75899 (/TAS)
GABA receptor complex GO:1902710
A protein complex which is capable of GABA receptor activity. Upon binding of gamma-aminobutyric acid (GABA) it transmits the signal from one side of the membrane to the other to initiate a change in cell activity. Major inhibitory receptor in vertebrate brain. Also found in other vertebrate tissues, invertebrates and possibly in plants. Effective benzodiazepine receptor.
5 O75899 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA) O75899 (/IDA)
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.
2 O88871 (/ISS) Q80T41 (/ISS)
G protein-coupled receptor heterodimeric complex GO:0038039
A protein complex that contains two G protein-coupled receptors (GPCRs) of different subtypes. Formation of a GPCR heterodimer may alter the functional property of the GPCR.
2 O88871 (/ISS) Q80T41 (/ISS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q80T41 (/IDA)
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 Q80T41 (/ISO)
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 O88871 (/TAS)
G protein-coupled receptor heterodimeric complex GO:0038039
A protein complex that contains two G protein-coupled receptors (GPCRs) of different subtypes. Formation of a GPCR heterodimer may alter the functional property of the GPCR.
1 Q80T41 (/ISO)
Neuron projection GO:0043005
A prolongation or process extending from a nerve cell, e.g. an axon or dendrite.
1 Q80T41 (/IDA)
Glutamatergic synapse GO:0098978
A synapse that uses glutamate as a neurotransmitter.
1 O88871 (/IDA)
Glutamatergic synapse GO:0098978
A synapse that uses glutamate as a neurotransmitter.
1 Q80T41 (/ISO)
GABA-ergic synapse GO:0098982
A synapse that uses GABA as a neurotransmitter. These synapses are typically inhibitory.
1 O88871 (/IDA)
GABA-ergic synapse GO:0098982
A synapse that uses GABA as a neurotransmitter. These synapses are typically inhibitory.
1 Q80T41 (/ISO)
Integral component of postsynaptic membrane GO:0099055
The component of the postsynaptic 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 O88871 (/IDA)
Integral component of postsynaptic membrane GO:0099055
The component of the postsynaptic 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 Q80T41 (/ISO)
Integral component of presynaptic membrane GO:0099056
The component of the presynaptic 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 O88871 (/IDA)
Integral component of presynaptic membrane GO:0099056
The component of the presynaptic 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 Q80T41 (/ISO)
GABA receptor complex GO:1902710
A protein complex which is capable of GABA receptor activity. Upon binding of gamma-aminobutyric acid (GABA) it transmits the signal from one side of the membrane to the other to initiate a change in cell activity. Major inhibitory receptor in vertebrate brain. Also found in other vertebrate tissues, invertebrates and possibly in plants. Effective benzodiazepine receptor.
1 Q80T41 (/ISO)
G protein-coupled GABA receptor complex GO:1902712
A protein complex which is capable of G protein-coupled GABA receptor activity. In human, it is usually a heterodimer composed of GABA-B receptor subunits 1 and 2.
1 H2L0Q3 (/TAS)