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Dopamine: one of the catecholamine neurotransmitters in the brain; it is derived from tyrosine and is the precursor to norepinephrine and epinephrine; dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement; dopamine receptors mediate its action.Source: CRISP.t is derived from tyrosine and is the precursor to NOREPINEPHRINE and EPINEPHRINE. Dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement. A family of receptors (RECEPTORS, DOPAMINE) mediate its action. Source: MeSH 2007.
From Wikipedia, the free encyclopedia. The dopamine transporter (also dopamine active transporter, DAT, SLC6A3) is a membrane-spanning protein that pumps the neurotransmitter dopamine out of the synapse back into cytosol, from which other transporters sequester DA and NE into vesicles for later storage and release.AT is implicated in a number of dopamine-related disorders, including attention deficit hyperactivity disorder, bipolar disorder, clinical depression, and alcoholism. The gene that encodes the DAT protein is located on human chromosome 5, consists of 15 coding exons, and is roughly 64 kbp long.