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How do amino acids contribute to neurotransmitters such as serotonin and histamine?
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Amino acid
The structure and function of amino acids.
Amino acids serve as essential precursors for the synthesis of various neurotransmitters in the human body. They contribute to the production of these chemical messengers through specific biochemical pathways:
- Serotonin: This neurotransmitter is derived from the essential amino acid tryptophan. Because the body cannot synthesize tryptophan, it must be obtained through dietary sources to support the production of serotonin and other substances like niacin.123
- Histamine: This compound is synthesized from the amino acid histidine. The process involves the decarboxylation of histidine, which converts it into histamine, a molecule involved in various physiological processes, including allergic reactions.41
Beyond these examples, other amino acids or their derivatives also function as neurotransmitters. For instance, glutamic acid acts as an excitatory neurotransmitter and serves as the precursor for gamma-aminobutyric acid (GABA), a major inhibitory neurotransmitter.15