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Target intelligence / Profile preview
Alpha-2B Adrenergic Receptor (α2B adrenoceptor)
- Target
- α2B adrenoceptor
- Molecular classification
- G protein-coupled receptor, GPCR, Adrenergic receptor, Alpha-adrenergic receptor
01
Overview
The alpha-2B adrenergic receptor (α2B adrenoceptor) is a G protein-coupled receptor (GPCR) that belongs to the alpha-2 adrenergic receptor family. It is predominantly located on vascular smooth muscle and plays a key role in vasoconstriction. Activation leads to inhibition of adenylyl cyclase and a reduction in cyclic AMP levels. Polymorphisms in ADRA2B are associated with altered metabolic rate and emotional memory processing. Drugs targeting alpha-2 adrenergic receptors are used for conditions such as hypertension, though selectivity for the α2B subtype varies.
- Other names
- ADRA2BAlpha2B adrenergic receptor
02
Mechanism of action
Agonist or antagonist binding leading to altered downstream signaling via G proteins and modulation of adenylyl cyclase activity. Primarily leads to inhibition of norepinephrine release and vasoconstriction.
03
Biological functions
Signal transductionInhibition of adenylyl cyclase activitySuppression of cyclic AMP levelsHyperpolarization of noradrenergic neuronsRegulation of neurotransmitter releaseVasoconstrictionNeurotransmissionBlood pressure regulation
04
Disease associations
ObesityCardiovascular diseaseEmotional memory disorders
05
Safety considerations
HypertensionPotential for emotional memory disturbances related to ADRA2B polymorphismsVasopressor effects
06
Interacting drugs
Norepinephrine
4 more in the full profile.
07
Biomarkers
ADRA2B polymorphisms (e.g., deletion variant)
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