ADRA2B

ADRA2B

A gene on chromosome 2p13-q13 that encodes alpha-2B-adrenergic receptor, a member of the G protein-coupled receptor superfamily, which plays a critical role in regulating neurotransmitter release from sympathetic nerves and from adrenergic neurons in the CNS, smooth muscle contraction and thermoregulation. The alpha2B subtype associates with EIF-2B, a guanine nucleotide exchange protein that regulates translation.

ADRA2A agonists
Clonidine > norepinephrine > epinephrine = oxymetazoline > dopamine > p-tyramine = phenylephrine > serotonin > p-synephrine / p-octopamine.

ADRA2A antagonists
Yohimbine > chlorpromazine > phentolamine > mianserine > spiperone > prazosin >
alprenolol > propanolol > pindolol.
References in periodicals archive ?
gov/gene/ change ADRA2B Adrenoceptor alpha 2B Alpha-2-adrenergic 2.
Among them, GO:0004888 dominantly contains 33 transcripts encoding signal receptors, and these receptors could be further classified into several subgroups: OXTR, LOC431251 and SSTR3 belong to reproductive hormone receptors; CHRM2, ADRA2B, P2RX4, P2RY2, EDNRB2, GABRB2, GABRG2, LOC428961 and NPFFR2 function as receptors mediating neurotransmitters or neuropeptide; GRIN2B and GRIN3A could modulate the efficiency of synaptic transmission; NTRK1 and NTRK2 belong to the receptor tyrosine kinase (RTK) family, and are involved with neurotrophin (GO:0005030--neurotrophin receptor activity; and GO:0043121--neurotrophin binding) (Table 5).
Polymorphisms in ADRA2B have been shown to be associated with suicidal behaviour among patients with schizophrenia.
The DD variant of the ADRA2B gene, which mediates coronary vasoconstriction, was associated with a higher risk of sudden death in the Helsinki Sudden Death Study (16).
HTR2C, CHRM2, ADRA2B, HTR6, HTR5A, ADRA2C, HTR7, DRD2, and DRD4; SLC6A4, ADRA1A, HTR1A, ADRA1B, HTR2A, and DRD1; OPRL1, CHRM5, CHRM1, ADRB1, ADRA2A, and HRH1; and CHRM4, CHRM3, KCNH2, SLC6A4, CYP2D6, SCN1A: four clusters of neuronal GPCRs (G-proteincoupled receptors: adrenergic, cholinergic, histamine, and serotonin receptors).