. 2014 Nov 22;16(6):485. doi: 10.1186/s13075-014-0485-1

Table 2.

Mammalian sympathetic neurotransmitters and their receptors

Neurotransmitters	Receptors	Neuropeptide genes	Neurotransmitter receptor genes
Catecholaminergic
Norepinephrine or noradrenaline (NA)	≤10⁻⁸ M: α 1a-, b-, d- adrenoceptors		ADRA1A, ADRA1B, ADRA1D
	≤10⁻⁸ M: α 2a-, b-, c-adrenoceptors		ADRA2A, ADRA2B, ADRA2C
	≥10⁻⁶ M: β1-, β2-, β3-adrenoceptors		ADRB1, ADRB2, ADRB3
Peptidergic
Vasoactive intestinal peptide (VIP)	VIP-1, VIP-2, and VIP/PACAP receptors	VIP	VIPR1, VIPR2

PACAP, pituitary adenylate cyclase-activating polypeptide.