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This intronless gene encodes a seven-pass transmembrane protein. This protein is a member of a subfamily of G protein-coupled receptors that regulate neurotransmitter release from sympathetic nerves and from adrenergic neurons in the central nervous system. [provided by RefSeq, Apr 2014]
ADRA2B (Adrenoceptor Alpha 2B) is a Protein Coding gene. Diseases associated with ADRA2B include Familial Adult Myoclonic Epilepsy and Epilepsy, Familial Adult Myoclonic, 2. Among its related pathways are Signaling by GPCR and Activation of cAMP-Dependent PKA. Gene Ontology (GO) annotations related to this gene include G protein-coupled receptor activity and alpha2-adrenergic receptor activity. An important paralog of this gene is ADRA2A.
Adrenergic alpha2 receptors (alpha2-adrenoceptors) are members of the adrenergic receptor group of G-protein-coupled receptors that also includes alpha1A, alpha1B, alpha1D, beta1, beta2 and beta3. Adrenergic alpha2 receptors are divided into three subtypes in humans: alpha2A, alpha2B and alpha2C.
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0004930 | G protein-coupled receptor activity | IEA,IBA | 21873635 |
GO:0004935 | adrenergic receptor activity | IBA | -- |
GO:0004938 | alpha2-adrenergic receptor activity | TAS,IDA | 17215105 |
GO:0005515 | protein binding | IPI | 16531006 |
GO:0051379 | epinephrine binding | IDA | 17215105 |
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0005886 | plasma membrane | TAS | -- |
GO:0005887 | integral component of plasma membrane | TAS,IBA | 21873635 |
GO:0009986 | cell surface | IDA | 27901063 |
GO:0016020 | membrane | IEA | -- |
GO:0016021 | integral component of membrane | IEA | -- |
SuperPathway | Contained pathways | ||
---|---|---|---|
1 | Peptide ligand-binding receptors | ||
2 | Monoamine GPCRs |
.75
|
.01
|
3 | Activation of cAMP-Dependent PKA |
Activation of cAMP-Dependent PKA
.77
cAMP Pathway
.77
|
Activation of PKA through GPCR
.71
|
4 | Signaling by GPCR | ||
5 | Response to elevated platelet cytosolic Ca2+ |
.44
|
GO ID | Qualified GO term | Evidence | PubMed IDs |
---|---|---|---|
GO:0000187 | activation of MAPK activity | IEA | -- |
GO:0003056 | regulation of vascular smooth muscle contraction | IEA | -- |
GO:0006940 | regulation of smooth muscle contraction | IEA | -- |
GO:0007165 | signal transduction | IEA | -- |
GO:0007186 | G protein-coupled receptor signaling pathway | IDA,TAS | -- |
Name | Status | Disease Links | Group | Role | Mechanism of Action | Clinical Trials |
---|---|---|---|---|---|---|
Yohimbine | Approved, Investigational, Vet_approved | Pharma | Antagonist, Target, antagonist | 36 | ||
Apomorphine | Approved, Investigational | Pharma | Agonist, Partial agonist, Antagonist, Full agonist, Activator, Activation, Target, agonist | 48 | ||
Brimonidine | Approved | Pharma | Agonist, Full agonist, Partial agonist, Target, agonist | 0 | ||
Bromocriptine | Approved, Investigational | Pharma | Antagonist, Agonist, Partial agonist, Full agonist, Target, agonist | 44 | ||
Cabergoline | Approved | Pharma | Antagonist, Agonist, Full agonist, Partial agonist, Target, antagonist, agonist | 60 |
Name | Synonyms | Role | CAS Number | PubChem IDs | PubMed IDs | |
---|---|---|---|---|---|---|
Clonidine hydrochloride |
|
4205-91-8 |
|
|
||
Rilmenidine hemifumarate |
|
207572-68-7 |
|
|
Compound | Action | Cas Number |
---|---|---|
Clonidine hydrochloride | alpha2 agonist. Also I1 ligand | 4205-91-8 |
Guanabenz acetate | alpha2 agonist. Also I2 selective ligand | 23256-50-0 |
Rilmenidine hemifumarate | alpha2 agonist. Also I1 ligand | 207572-68-7 |
Spiroxatrine | Potent alpha2C antagonist | 1054-88-2 |
UK 14,304 | alpha2 agonist | 59803-98-4 |
Compound | Action | Cas Number |
---|---|---|
Acebutolol HCl | 34381-68-5 | |
Adrenalone HCl | 62-13-5 | |
Alfuzosin HCl | α1 adrenoceptor antagonist,functionally uro-selective | 81403-68-1 |
ARC 239 dihydrochloride | α2B adrenoceptor antagonist | 55974-42-0 |
Bambuterol | 81732-65-2 | |
Betaxolol | βadrenergic receptor blocker | 659-18-7 |
Betaxolol HCl | 63659-19-8 | |
Bisoprolol fumarate | 104344-23-2 | |
Brimonidine Tartrate | 70359-46-5 | |
Carvedilol | 72956-09-3 | |
Cisatracurium Besylate | Neuromuscular-blocking drug | 96946-42-8 |
Clonidine HCl | 4205-91-8 | |
Detomidine HCl | 90038-01-0 | |
Dexmedetomidine | 113775-47-6 | |
Dexmedetomidine HCl | 145108-58-3 | |
DL-Adrenaline | 329-65-7 | |
Doxazosin Mesylate | α1-adrenergic receptor antagonist | 77883-43-3 |
Droxidopa | 23651-95-8 | |
Epinephrine Bitartrate | 51-42-3 | |
Epinephrine HCl | 55-31-2 | |
Formoterol Hemifumarate | 43229-80-7 | |
Guanabenz Acetate | 23256-50-0 | |
Indacaterol Maleate | 753498-25-8 | |
Isoprenaline HCl | 51-30-9 | |
Ivabradine HCl | 148849-67-6 | |
Labetalol HCl | 32780-64-6 | |
L-Adrenaline | 51-43-4 | |
Maprotiline HCl | 10347-81-6 | |
Medetomidine HCl | 86347-15-1 | |
Methyldopa | 555-30-6 | |
Metoprolol Tartrate | β1-adrenergic blocking agent | 392-17-7 |
Mirabegron (YM178) | 223673-61-8 | |
Moxonidine | I1R/α2AR agonist | 75438-57-2 |
Naftopidil | α1-adrenergic receptor antagonist | 57149-07-2 |
Naftopidil DiHCl | 57149-08-3 | |
Naphazoline HCl | 550-99-2 | |
Nebivolol | 152520-56-4 | |
Nedaplatin | 95734-82-0 | |
Noradrenaline bitartrate monohydrate | 108341-18-0 | |
Oxymetazoline HCl | Alpha-1/alpha-2 agonist | 2315-02-8 |
Phenoxybenzamine HCl | 63-92-3 | |
Phentolamine Mesylate | Alpha 1/2-blocking agent | 65-28-1 |
Phenylephrine HCl | 61-76-7 | |
Prazosin HCl | α1 and α2B-adrenoceptor antagonist | 19237-84-4 |
Propranolol HCl | 318-98-9 | |
Ritodrine HCl | β-2 adrenergic receptor agonist | 23239-51-2 |
Salbutamol Sulfate | β-2 adrenergic receptor agonist | 51022-70-9 |
Salmeterol xinafoate | β2-adrenergic receptor agonist | 94749-08-3 |
Scopine | 498-45-3 | |
Setiptiline | Serotonin receptor antagonist | 57262-94-9 |
Silodosin | α1-adrenoceptor antagonist | 160970-54-7 |
Synephrine HCl | 5985-28-4 | |
Terazosin HCl | 70024-40-7 | |
Terbutaline Sulfate | 23031-32-5 | |
Tetrahydrozoline HCl | 522-48-5 | |
Timolol Maleate | 26921-17-5 | |
Tizanidine HCl | 64461-82-1 | |
Tolazoline HCl | 59-97-2 | |
Xylazine | α2-adrenoceptor agonist | 7361-61-7 |
Xylazine HCl | α2 Adrenoceptor agonist | 23076-35-9 |
Xylometazoline HCl | 1218-35-5 |
This gene was present in the common ancestor of animals.
Organism | Taxonomy | Gene | Similarity | Type | Details |
---|---|---|---|---|---|
Chimpanzee (Pan troglodytes) |
Mammalia | ADRA2B 30 |
|
||
Dog (Canis familiaris) |
Mammalia | ADRA2B 30 |
|
||
Cow (Bos Taurus) |
Mammalia | ADRA2B 30 |
|
||
Rat (Rattus norvegicus) |
Mammalia | Adra2b 30 |
|
||
Mouse (Mus musculus) |
Mammalia | Adra2b 30 17 |
|
||
Chicken (Gallus gallus) |
Aves | LOC101751513 30 |
|
||
Tropical Clawed Frog (Silurana tropicalis) |
Amphibia | adra2b 30 |
|
||
Zebrafish (Danio rerio) |
Actinopterygii | adra2b 30 |
|
||
African malaria mosquito (Anopheles gambiae) |
Insecta | AgaP_AGAP000606 30 |
|
||
Fruit Fly (Drosophila melanogaster) |
Insecta | CG7431 32 |
|
|
|
CG18208 32 |
|
|
|||
Worm (Caenorhabditis elegans) |
Secernentea | dop-1 30 |
|
SNP ID | Clinical significance and condition | Chr 02 pos | Variation | AA Info | Type |
---|---|---|---|---|---|
655730 | Uncertain Significance: not provided | 96,115,455(-) | G/C | MISSENSE_VARIANT | |
706992 | Likely Benign: not provided | 96,115,238(-) | C/CTCCTCT | INFRAME_INSERTION | |
707066 | Likely Benign: not provided | 96,115,015(-) | C/T | MISSENSE_VARIANT | |
707706 | Likely Benign: not provided | 96,115,207(-) | C/T | MISSENSE_VARIANT | |
713934 | Likely Benign: not provided | 96,116,005(-) | G/A | SYNONYMOUS_VARIANT |
Variant ID | Type | Subtype | PubMed ID |
---|---|---|---|
dgv4009n100 | CNV | gain | 25217958 |
dgv607e201 | CNV | deletion | 23290073 |
esv3425717 | CNV | duplication | 20981092 |
esv3591652 | OTHER | inversion | 21293372 |
esv5003 | OTHER | complex | 18987735 |
nsv1135873 | CNV | deletion | 24896259 |
nsv2834 | CNV | deletion | 18451855 |
Disorder | Aliases | PubMed IDs |
---|---|---|
familial adult myoclonic epilepsy |
|
|
epilepsy, familial adult myoclonic, 2 |
|
|
resting heart rate, variation in |
|
|
perinephritis |
|
|
ocular hypotension |
|
|