Adrenoceptors

Summary
Organism
Homo sapiens (human)
Reactome
R-HSA-390696
PubChem
R-HSA-390696
Description
  • The adrenoceptors (adrenergic receptors) are targets for the catecholamines adrenaline (epinephrine) and noradrenaline (norepinephrine). These receptors are widespread in the body and binding of catecholamines produces a sympathetic response ('flight-or-fight response') resulting in increased heart rate, pupil dilation and energy mobilization amongst other responses. There are three major types of adrenoceptor, alpha1, alpha2 and beta. Each type is thought to have three subtypes; alpha1 (1A,1B,1D), alpha2 (2A,2B,2C) and beta (1,2,3) (Bylund DB et al, 1994).
Click on a node on the pathway to see its details. Glycoproteins are marked with a glycoprotein icon in their name.
Displaying all 8 entries
UniProt ID Protein Name Gene Symbol Pathway Viewer
P07550 Beta-2 adrenergic receptor
  • ADRB2
  • ADRB2R
  • B2AR
view
P08588 Beta-1 adrenergic receptor
  • ADRB1
  • ADRB1R
  • B1AR
view
P08913 Alpha-2A adrenergic receptor
  • ADRA2A
  • ADRA2R
  • ADRAR
view
P13945 Beta-3 adrenergic receptor
  • ADRB3
  • ADRB3R
  • B3AR
view
P18825 Alpha-2C adrenergic receptor
  • ADRA2C
  • ADRA2L2
  • ADRA2RL2
view
P25100 Alpha-1D adrenergic receptor
  • ADRA1A
  • ADRA1D
view
P35348 Alpha-1A adrenergic receptor
  • ADRA1A
  • ADRA1C
view
P35368 Alpha-1B adrenergic receptor
  • ADRA1B
view

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Acknowledgements

Supported by JST NBDC Grant Number JPMJND2204

Partly supported by NIH Common Fund Grant #1U01GM125267-01


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Last updated: April 6, 2026