ADRA2A (Alpha-2 Adrenergic Receptor 2A): ADRA2A encodes a protein called alpha-2 adrenergic receptor 2A, which is a member of the G protein-coupled receptor family. It plays a crucial role in regulating the response to the neurotransmitter norepinephrine. ADRA2A is involved in various physiological processes, including blood pressure regulation, vasoconstriction, and the fight-or-flight response....