Receptors, Adrenergic, alpha-1

**Definition:** A subclass of alpha-adrenergic receptors that mediate contraction of SMOOTH MUSCLE in a variety of tissues such as ARTERIOLES; VEINS; and the UTERUS. They are usually found on postsynaptic membranes and signal through GQ-G11 G-PROTEINS.

**Tree numbers:** - D12.776.543.750.670.300.300.300.100 - D12.776.543.750.695.150.300.300.700 - D12.776.543.750.720.330.300.300.100

**Synonyms:** - alpha 1 Adrenergic Receptor - alpha-1 Adrenergic Receptors - Receptor, Adrenergic, alpha-1 - Receptors, alpha-1 Adrenergic - Adrenergic Receptor, alpha-1 - Adrenergic alpha-1 Receptors