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:

"
Rhodopsin 7-helix transmembrane proteins
".

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 100: alpha-2B adrenergic 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 15 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
Alpha2-adrenergic receptor activity GO:0004938
Combining with epinephrine or norepinephrine to initiate a change in cell activity via activation of a G protein, with pharmacological characteristics of alpha2-adrenergic receptors; the activity involves transmitting the signal to the Gi alpha subunit of a heterotrimeric G protein.
6 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA) P19328 (/IDA) P30545 (/IDA) Q90WY5 (/IDA)
Alpha2-adrenergic receptor activity GO:0004938
Combining with epinephrine or norepinephrine to initiate a change in cell activity via activation of a G protein, with pharmacological characteristics of alpha2-adrenergic receptors; the activity involves transmitting the signal to the Gi alpha subunit of a heterotrimeric G protein.
4 P18089 (/TAS) P18825 (/TAS) P18825 (/TAS) Q01337 (/TAS)
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).
4 P18089 (/IPI) P18825 (/IPI) P18825 (/IPI) P30545 (/IPI)
Epinephrine binding GO:0051379
Interacting selectively and non-covalently with epinephrine, a hormone produced by the medulla of the adrenal glands that increases heart activity, improves the power and prolongs the action of muscles, and increases the rate and depth of breathing. It is synthesized by the methylation of norepinephrine.
3 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA)
Alpha2-adrenergic receptor activity GO:0004938
Combining with epinephrine or norepinephrine to initiate a change in cell activity via activation of a G protein, with pharmacological characteristics of alpha2-adrenergic receptors; the activity involves transmitting the signal to the Gi alpha subunit of a heterotrimeric G protein.
2 P30545 (/ISO) Q01337 (/ISO)
Alpha-2A adrenergic receptor binding GO:0031694
Interacting selectively and non-covalently with an alpha-2A adrenergic receptor.
2 P18825 (/IPI) P18825 (/IPI)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
2 P18825 (/IDA) P18825 (/IDA)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
2 P18825 (/IPI) P18825 (/IPI)
Epinephrine binding GO:0051379
Interacting selectively and non-covalently with epinephrine, a hormone produced by the medulla of the adrenal glands that increases heart activity, improves the power and prolongs the action of muscles, and increases the rate and depth of breathing. It is synthesized by the methylation of norepinephrine.
2 P30545 (/ISO) Q01337 (/ISO)
G protein-coupled receptor activity GO:0004930
Combining with an extracellular signal 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 Q01337 (/IDA)
Adrenergic receptor activity GO:0004935
Combining with epinephrine or norepinephrine and transmitting the signal across the membrane by activating the alpha-subunit of an associated heterotrimeric G-protein complex.
1 P30545 (/IMP)
Alpha-adrenergic receptor activity GO:0004936
Combining with epinephrine or norepinephrine to initiate a change in cell activity via activation of a G protein, with pharmacological characteristics of alpha-adrenergic receptors.
1 Q90WY5 (/ISS)
Alpha-2A adrenergic receptor binding GO:0031694
Interacting selectively and non-covalently with an alpha-2A adrenergic receptor.
1 Q01337 (/ISO)
Protein homodimerization activity GO:0042803
Interacting selectively and non-covalently with an identical protein to form a homodimer.
1 Q01337 (/ISO)
Protein heterodimerization activity GO:0046982
Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
1 Q01337 (/ISO)

There are 41 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).
5 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA) P30545 (/IDA) Q01337 (/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).
3 P18089 (/TAS) P18825 (/TAS) P18825 (/TAS)
Cell-cell signaling GO:0007267
Any process that mediates the transfer of information from one cell to another. This process includes signal transduction in the receiving cell and, where applicable, release of a ligand and any processes that actively facilitate its transport and presentation to the receiving cell. Examples include signaling via soluble ligands, via cell adhesion molecules and via gap junctions.
3 P18089 (/TAS) P18825 (/TAS) P18825 (/TAS)
Negative regulation of norepinephrine secretion GO:0010700
Any process that decreases the frequency, rate or extent of the regulated release of norepinephrine.
3 P18089 (/NAS) P18825 (/NAS) P18825 (/NAS)
Negative regulation of norepinephrine secretion GO:0010700
Any process that decreases the frequency, rate or extent of the regulated release of norepinephrine.
3 P18089 (/TAS) P18825 (/TAS) P18825 (/TAS)
Activation of protein kinase B activity GO:0032148
Any process that initiates the activity of the inactive enzyme protein kinase B.
3 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA)
Negative regulation of epinephrine secretion GO:0032811
Any process that stops, prevents, or reduces the frequency, rate or extent of the regulated release of epinephrine.
3 A0A060X9D7 (/IMP) A0A060XV00 (/IMP) A0A060Y7B7 (/IMP)
Negative regulation of epinephrine secretion GO:0032811
Any process that stops, prevents, or reduces the frequency, rate or extent of the regulated release of epinephrine.
3 P18089 (/NAS) P18825 (/NAS) P18825 (/NAS)
Receptor transactivation GO:0035624
The process in which a receptor is activated by another receptor. Receptor transactivation can occur through different mechanisms and includes cross-talk between signaling pathways where one receptor activates a receptor for a different ligand, and also activation of subunits within a receptor oligomer.
3 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA)
Positive regulation of MAPK cascade GO:0043410
Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the MAPK cascade.
3 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA)
Positive regulation of neuron differentiation GO:0045666
Any process that activates or increases the frequency, rate or extent of neuron differentiation.
3 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA)
Response to electrical stimulus GO:0051602
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 an electrical stimulus.
3 A0A060X9D7 (/IDA) A0A060XV00 (/IDA) A0A060Y7B7 (/IDA)
Adrenergic receptor signaling pathway GO:0071875
A series of molecular signals generated as a consequence of an adrenergic receptor binding to one of its physiological ligands.
3 P18089 (/IDA) P18825 (/IDA) P18825 (/IDA)
Adrenergic receptor signaling pathway GO:0071875
A series of molecular signals generated as a consequence of an adrenergic receptor binding to one of its physiological ligands.
3 A0A060X9D7 (/IMP) A0A060XV00 (/IMP) A0A060Y7B7 (/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).
2 P30545 (/ISO) Q01337 (/ISO)
Female pregnancy GO:0007565
The set of physiological processes that allow an embryo or foetus to develop within the body of a female animal. It covers the time from fertilization of a female ovum by a male spermatozoon until birth.
2 P19328 (/IMP) P22086 (/IMP)
Female pregnancy GO:0007565
The set of physiological processes that allow an embryo or foetus to develop within the body of a female animal. It covers the time from fertilization of a female ovum by a male spermatozoon until birth.
2 P30545 (/ISO) Q01337 (/ISO)
Activation of protein kinase B activity GO:0032148
Any process that initiates the activity of the inactive enzyme protein kinase B.
2 P30545 (/ISO) Q01337 (/ISO)
Receptor transactivation GO:0035624
The process in which a receptor is activated by another receptor. Receptor transactivation can occur through different mechanisms and includes cross-talk between signaling pathways where one receptor activates a receptor for a different ligand, and also activation of subunits within a receptor oligomer.
2 P30545 (/ISO) Q01337 (/ISO)
Positive regulation of MAPK cascade GO:0043410
Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the MAPK cascade.
2 P30545 (/ISO) Q01337 (/ISO)
Positive regulation of neuron differentiation GO:0045666
Any process that activates or increases the frequency, rate or extent of neuron differentiation.
2 P30545 (/ISO) Q01337 (/ISO)
Regulation of insulin secretion GO:0050796
Any process that modulates the frequency, rate or extent of the regulated release of insulin.
2 P18825 (/TAS) P18825 (/TAS)
Adrenergic receptor signaling pathway GO:0071875
A series of molecular signals generated as a consequence of an adrenergic receptor binding to one of its physiological ligands.
2 P30545 (/ISO) Q01337 (/ISO)
MAPK cascade GO:0000165
An intracellular protein kinase cascade containing at least a MAPK, a MAPKK and a MAP3K. The cascade can also contain an additional tiers: the upstream MAP4K. The kinases in each tier phosphorylate and activate the kinase in the downstream tier to transmit a signal within a cell.
1 P30545 (/IMP)
Activation of MAPK activity GO:0000187
The initiation of the activity of the inactive enzyme MAP kinase (MAPK).
1 P19328 (/IMP)
Activation of MAPK activity GO:0000187
The initiation of the activity of the inactive enzyme MAP kinase (MAPK).
1 P30545 (/ISO)
Angiogenesis GO:0001525
Blood vessel formation when new vessels emerge from the proliferation of pre-existing blood vessels.
1 P30545 (/IMP)
Regulation of vascular smooth muscle contraction GO:0003056
Any process that increases the frequency, rate or extent of vascular smooth muscle contraction.
1 P19328 (/IMP)
Regulation of vascular smooth muscle contraction GO:0003056
Any process that increases the frequency, rate or extent of vascular smooth muscle contraction.
1 P30545 (/ISO)
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 Q90WY5 (/ISS)
Positive regulation of blood pressure GO:0045777
Any process in which the force of blood traveling through the circulatory system is increased.
1 P19328 (/IMP)
Positive regulation of blood pressure GO:0045777
Any process in which the force of blood traveling through the circulatory system is increased.
1 P30545 (/ISO)
Positive regulation of vasoconstriction GO:0045907
Any process that activates or increases the frequency, rate or extent of vasoconstriction.
1 P22086 (/IMP)
Positive regulation of vasoconstriction GO:0045907
Any process that activates or increases the frequency, rate or extent of vasoconstriction.
1 Q01337 (/ISO)
Regulation of sensory perception of pain GO:0051930
Any process that modulates the frequency, rate or extent of the sensory perception of pain, the series of events required for an organism to receive a painful stimulus, convert it to a molecular signal, and recognize and characterize the signal.
1 P22086 (/IMP)
Regulation of sensory perception of pain GO:0051930
Any process that modulates the frequency, rate or extent of the sensory perception of pain, the series of events required for an organism to receive a painful stimulus, convert it to a molecular signal, and recognize and characterize the signal.
1 Q01337 (/ISO)
Negative regulation of uterine smooth muscle contraction GO:0070473
Any process that decreases the frequency, rate or extent of uterine smooth muscle contraction.
1 P22086 (/IMP)
Negative regulation of uterine smooth muscle contraction GO:0070473
Any process that decreases the frequency, rate or extent of uterine smooth muscle contraction.
1 Q01337 (/ISO)
Positive regulation of uterine smooth muscle contraction GO:0070474
Any process that increases the frequency, rate or extent of uterine smooth muscle contraction.
1 P19328 (/IMP)
Positive regulation of uterine smooth muscle contraction GO:0070474
Any process that increases the frequency, rate or extent of uterine smooth muscle contraction.
1 P30545 (/ISO)
Adenylate cyclase-inhibiting adrenergic receptor signaling pathway GO:0071881
The series of molecular signals generated as a consequence of an adrenergic receptor binding to its physiological ligand, where the pathway proceeds with inhibition of adenylyl cyclase and a subsequent decrease in the concentration of cyclic AMP (cAMP).
1 Q90WY5 (/IDA)

There are 26 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.
3 P18089 (/TAS) P18825 (/TAS) P18825 (/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.
3 P18089 (/TAS) P18825 (/TAS) P18825 (/TAS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
2 P18825 (/IDA) P18825 (/IDA)
Endosome GO:0005768
A vacuole to which materials ingested by endocytosis are delivered.
2 P18825 (/TAS) P18825 (/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.
2 P18825 (/IDA) P18825 (/IDA)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
2 P19328 (/ISS) P30545 (/ISS)
Cytoplasm GO:0005737
All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
1 Q01337 (/ISO)
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 Q90WY5 (/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.
1 Q01337 (/ISO)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
1 P18089 (/IDA)
Cell surface GO:0009986
The external part of the cell wall and/or plasma membrane.
1 P30545 (/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 P19328 (/TAS)
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 P22086 (/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 Q01337 (/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 P22086 (/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 Q01337 (/ISO)
Axon terminus GO:0043679
Terminal inflated portion of the axon, containing the specialized apparatus necessary to release neurotransmitters. The axon terminus is considered to be the whole region of thickening and the terminal button is a specialized region of it.
1 P22086 (/IDA)
Axon terminus GO:0043679
Terminal inflated portion of the axon, containing the specialized apparatus necessary to release neurotransmitters. The axon terminus is considered to be the whole region of thickening and the terminal button is a specialized region of it.
1 Q01337 (/ISO)
Glutamatergic synapse GO:0098978
A synapse that uses glutamate as a neurotransmitter.
1 P22086 (/EXP)
Glutamatergic synapse GO:0098978
A synapse that uses glutamate as a neurotransmitter.
1 P22086 (/IDA)
Glutamatergic synapse GO:0098978
A synapse that uses glutamate as a neurotransmitter.
1 Q01337 (/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 P22086 (/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 Q01337 (/ISO)
Integral component of postsynaptic density membrane GO:0099061
The component of the postsynaptic density 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 P22086 (/EXP)
Integral component of postsynaptic density membrane GO:0099061
The component of the postsynaptic density 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 P22086 (/IDA)
Integral component of postsynaptic density membrane GO:0099061
The component of the postsynaptic density 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 Q01337 (/ISO)
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