Dopamine biosynthesis pathway

The **dopamine biosynthesis pathway** is a metabolic sequence responsible for producing dopamine from amino acid precursors. The main steps involve conversion of L-phenylalanine to L-tyrosine by phenylalanine hydroxylase; then L‑tyrosine is converted into L‑DOPA by tyrosine hydroxylase—the rate-limiting step. Aromatic L-amino acid decarboxylase then converts L-DOPA into dopamine. This process occurs primarily in neurons and adrenal medulla cells. Dopamine produced via this route serves as a neurotransmitter and also acts as a precursor for norepinephrine and epinephrine synthesis[1][4]. Disruption at any step can lead to neurological diseases such as Parkinson’s disease due to insufficient dopamine production.

Other names

Dopamine synthesis pathwayDA biosynthetic pathwayCatecholamine biosynthesis (when referring to the broader process)