tetrahydrobiopterin

noun

A naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.

Similar
sapropterin
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Meanings

nountetrahydrobiopterin (uncountable)
  1. uncountablebiochemistryA naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.

    Synonyms: sapropterin

Synonyms & antonyms

nounA naturally-occurring nutrient and essential cofactor of the three aromatic amino acid hydroxylase enzymes, used in the biosynthesis of the neurotransmitters serotonin, melatonin, dopamine, norepinephrine, epinephrine, and nitric oxide.

Similar
sapropterin

Origin

From tetra- + hydro- + biopterin.

Full word history & related roots →
Cite this entry
APA

tetrahydrobiopterin. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/tetrahydrobiopterin

MLA

“tetrahydrobiopterin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tetrahydrobiopterin. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “tetrahydrobiopterin,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/tetrahydrobiopterin.

Source: tetrahydrobiopterin on Wiktionary, CC BY-SA 4.0.