Tryptophan

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Tryptophan is an amino acid and essential in human nutrition. It is one of the 20 amino acids in the genetic code (codon UGG), and its symbol is Trp or W. Only the L-stereoisomer appears in mammalian protein.

Related Topics:
Amino acid - Essential - Human - Genetic code - Codon - Stereoisomer

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Tryptophan is also a precursor for serotonin (a neurotransmitter) and melatonin (a neurohormone). The functional group of tryptophan is indole, see that article for more on its chemical properties.

Related Topics:
Precursor - Serotonin - Neurotransmitter - Melatonin - Hormone - Indole

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